ec02f694ef
updated dictionary itteration to create a list for generation, so that tests can be added in the generator functions under python3. This works fine as-is in python2 because python 2 already creates a list, whereas python3 returns an itterator. Forcing a list format for the return fixes python3 to work the same way as python2
2300 lines
87 KiB
Python
2300 lines
87 KiB
Python
""" Python test discovery, setup and run of test functions. """
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import re
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import fnmatch
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import functools
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import py
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import inspect
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import types
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import sys
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import pytest
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from _pytest.mark import MarkDecorator, MarkerError
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from py._code.code import TerminalRepr
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try:
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import enum
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except ImportError: # pragma: no cover
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# Only available in Python 3.4+ or as a backport
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enum = None
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import _pytest
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import _pytest._pluggy as pluggy
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cutdir2 = py.path.local(_pytest.__file__).dirpath()
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cutdir1 = py.path.local(pluggy.__file__.rstrip("oc"))
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NoneType = type(None)
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NOTSET = object()
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isfunction = inspect.isfunction
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isclass = inspect.isclass
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callable = py.builtin.callable
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# used to work around a python2 exception info leak
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exc_clear = getattr(sys, 'exc_clear', lambda: None)
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# The type of re.compile objects is not exposed in Python.
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REGEX_TYPE = type(re.compile(''))
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_PY3 = sys.version_info > (3, 0)
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_PY2 = not _PY3
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if hasattr(inspect, 'signature'):
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def _format_args(func):
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return str(inspect.signature(func))
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else:
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def _format_args(func):
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return inspect.formatargspec(*inspect.getargspec(func))
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if sys.version_info[:2] == (2, 6):
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def isclass(object):
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""" Return true if the object is a class. Overrides inspect.isclass for
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python 2.6 because it will return True for objects which always return
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something on __getattr__ calls (see #1035).
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Backport of https://hg.python.org/cpython/rev/35bf8f7a8edc
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"""
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return isinstance(object, (type, types.ClassType))
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def _has_positional_arg(func):
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return func.__code__.co_argcount
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def filter_traceback(entry):
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# entry.path might sometimes return a str object when the entry
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# points to dynamically generated code
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# see https://bitbucket.org/pytest-dev/py/issues/71
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raw_filename = entry.frame.code.raw.co_filename
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is_generated = '<' in raw_filename and '>' in raw_filename
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if is_generated:
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return False
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# entry.path might point to an inexisting file, in which case it will
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# alsso return a str object. see #1133
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p = py.path.local(entry.path)
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return p != cutdir1 and not p.relto(cutdir2)
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def get_real_func(obj):
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""" gets the real function object of the (possibly) wrapped object by
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functools.wraps or functools.partial.
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"""
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while hasattr(obj, "__wrapped__"):
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obj = obj.__wrapped__
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if isinstance(obj, functools.partial):
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obj = obj.func
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return obj
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def getfslineno(obj):
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# xxx let decorators etc specify a sane ordering
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obj = get_real_func(obj)
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if hasattr(obj, 'place_as'):
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obj = obj.place_as
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fslineno = py.code.getfslineno(obj)
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assert isinstance(fslineno[1], int), obj
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return fslineno
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def getimfunc(func):
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try:
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return func.__func__
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except AttributeError:
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try:
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return func.im_func
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except AttributeError:
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return func
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def safe_getattr(object, name, default):
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""" Like getattr but return default upon any Exception.
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Attribute access can potentially fail for 'evil' Python objects.
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See issue214
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"""
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try:
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return getattr(object, name, default)
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except Exception:
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return default
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class FixtureFunctionMarker:
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def __init__(self, scope, params,
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autouse=False, yieldctx=False, ids=None):
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self.scope = scope
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self.params = params
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self.autouse = autouse
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self.yieldctx = yieldctx
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self.ids = ids
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def __call__(self, function):
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if isclass(function):
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raise ValueError(
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"class fixtures not supported (may be in the future)")
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function._pytestfixturefunction = self
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return function
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def fixture(scope="function", params=None, autouse=False, ids=None):
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""" (return a) decorator to mark a fixture factory function.
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This decorator can be used (with or or without parameters) to define
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a fixture function. The name of the fixture function can later be
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referenced to cause its invocation ahead of running tests: test
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modules or classes can use the pytest.mark.usefixtures(fixturename)
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marker. Test functions can directly use fixture names as input
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arguments in which case the fixture instance returned from the fixture
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function will be injected.
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:arg scope: the scope for which this fixture is shared, one of
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"function" (default), "class", "module", "session".
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:arg params: an optional list of parameters which will cause multiple
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invocations of the fixture function and all of the tests
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using it.
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:arg autouse: if True, the fixture func is activated for all tests that
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can see it. If False (the default) then an explicit
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reference is needed to activate the fixture.
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:arg ids: list of string ids each corresponding to the params
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so that they are part of the test id. If no ids are provided
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they will be generated automatically from the params.
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"""
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if callable(scope) and params is None and autouse == False:
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# direct decoration
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return FixtureFunctionMarker(
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"function", params, autouse)(scope)
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if params is not None and not isinstance(params, (list, tuple)):
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params = list(params)
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return FixtureFunctionMarker(scope, params, autouse, ids=ids)
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def yield_fixture(scope="function", params=None, autouse=False, ids=None):
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""" (return a) decorator to mark a yield-fixture factory function
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(EXPERIMENTAL).
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This takes the same arguments as :py:func:`pytest.fixture` but
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expects a fixture function to use a ``yield`` instead of a ``return``
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statement to provide a fixture. See
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http://pytest.org/en/latest/yieldfixture.html for more info.
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"""
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if callable(scope) and params is None and autouse == False:
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# direct decoration
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return FixtureFunctionMarker(
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"function", params, autouse, yieldctx=True)(scope)
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else:
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return FixtureFunctionMarker(scope, params, autouse,
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yieldctx=True, ids=ids)
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defaultfuncargprefixmarker = fixture()
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def pyobj_property(name):
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def get(self):
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node = self.getparent(getattr(pytest, name))
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if node is not None:
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return node.obj
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doc = "python %s object this node was collected from (can be None)." % (
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name.lower(),)
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return property(get, None, None, doc)
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def pytest_addoption(parser):
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group = parser.getgroup("general")
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group.addoption('--fixtures', '--funcargs',
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action="store_true", dest="showfixtures", default=False,
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help="show available fixtures, sorted by plugin appearance")
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parser.addini("usefixtures", type="args", default=[],
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help="list of default fixtures to be used with this project")
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parser.addini("python_files", type="args",
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default=['test_*.py', '*_test.py'],
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help="glob-style file patterns for Python test module discovery")
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parser.addini("python_classes", type="args", default=["Test",],
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help="prefixes or glob names for Python test class discovery")
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parser.addini("python_functions", type="args", default=["test",],
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help="prefixes or glob names for Python test function and "
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"method discovery")
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group.addoption("--import-mode", default="prepend",
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choices=["prepend", "append"], dest="importmode",
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help="prepend/append to sys.path when importing test modules, "
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"default is to prepend.")
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def pytest_cmdline_main(config):
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if config.option.showfixtures:
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showfixtures(config)
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return 0
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def pytest_generate_tests(metafunc):
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# those alternative spellings are common - raise a specific error to alert
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# the user
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alt_spellings = ['parameterize', 'parametrise', 'parameterise']
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for attr in alt_spellings:
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if hasattr(metafunc.function, attr):
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msg = "{0} has '{1}', spelling should be 'parametrize'"
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raise MarkerError(msg.format(metafunc.function.__name__, attr))
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try:
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markers = metafunc.function.parametrize
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except AttributeError:
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return
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for marker in markers:
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metafunc.parametrize(*marker.args, **marker.kwargs)
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def pytest_configure(config):
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config.addinivalue_line("markers",
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"parametrize(argnames, argvalues): call a test function multiple "
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"times passing in different arguments in turn. argvalues generally "
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"needs to be a list of values if argnames specifies only one name "
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"or a list of tuples of values if argnames specifies multiple names. "
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"Example: @parametrize('arg1', [1,2]) would lead to two calls of the "
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"decorated test function, one with arg1=1 and another with arg1=2."
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"see http://pytest.org/latest/parametrize.html for more info and "
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"examples."
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)
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config.addinivalue_line("markers",
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"usefixtures(fixturename1, fixturename2, ...): mark tests as needing "
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"all of the specified fixtures. see http://pytest.org/latest/fixture.html#usefixtures "
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)
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def pytest_sessionstart(session):
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session._fixturemanager = FixtureManager(session)
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@pytest.hookimpl(trylast=True)
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def pytest_namespace():
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raises.Exception = pytest.fail.Exception
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return {
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'fixture': fixture,
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'yield_fixture': yield_fixture,
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'raises' : raises,
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'collect': {
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'Module': Module, 'Class': Class, 'Instance': Instance,
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'Function': Function, 'Generator': Generator,
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'_fillfuncargs': fillfixtures}
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}
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@fixture(scope="session")
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def pytestconfig(request):
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""" the pytest config object with access to command line opts."""
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return request.config
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|
|
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@pytest.hookimpl(trylast=True)
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def pytest_pyfunc_call(pyfuncitem):
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testfunction = pyfuncitem.obj
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if pyfuncitem._isyieldedfunction():
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testfunction(*pyfuncitem._args)
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else:
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funcargs = pyfuncitem.funcargs
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testargs = {}
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for arg in pyfuncitem._fixtureinfo.argnames:
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testargs[arg] = funcargs[arg]
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testfunction(**testargs)
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return True
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|
def pytest_collect_file(path, parent):
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ext = path.ext
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|
if ext == ".py":
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if not parent.session.isinitpath(path):
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for pat in parent.config.getini('python_files'):
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if path.fnmatch(pat):
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break
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else:
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return
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ihook = parent.session.gethookproxy(path)
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return ihook.pytest_pycollect_makemodule(path=path, parent=parent)
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|
|
|
def pytest_pycollect_makemodule(path, parent):
|
|
return Module(path, parent)
|
|
|
|
@pytest.hookimpl(hookwrapper=True)
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def pytest_pycollect_makeitem(collector, name, obj):
|
|
outcome = yield
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res = outcome.get_result()
|
|
if res is not None:
|
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raise StopIteration
|
|
# nothing was collected elsewhere, let's do it here
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|
if isclass(obj):
|
|
if collector.istestclass(obj, name):
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Class = collector._getcustomclass("Class")
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outcome.force_result(Class(name, parent=collector))
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|
elif collector.istestfunction(obj, name):
|
|
# mock seems to store unbound methods (issue473), normalize it
|
|
obj = getattr(obj, "__func__", obj)
|
|
# We need to try and unwrap the function if it's a functools.partial
|
|
# or a funtools.wrapped.
|
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# We musn't if it's been wrapped with mock.patch (python 2 only)
|
|
if not (isfunction(obj) or isfunction(get_real_func(obj))):
|
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collector.warn(code="C2", message=
|
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"cannot collect %r because it is not a function."
|
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% name, )
|
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elif getattr(obj, "__test__", True):
|
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if is_generator(obj):
|
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res = Generator(name, parent=collector)
|
|
else:
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res = list(collector._genfunctions(name, obj))
|
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outcome.force_result(res)
|
|
|
|
def is_generator(func):
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try:
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|
return py.code.getrawcode(func).co_flags & 32 # generator function
|
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except AttributeError: # builtin functions have no bytecode
|
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# assume them to not be generators
|
|
return False
|
|
|
|
class PyobjContext(object):
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module = pyobj_property("Module")
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cls = pyobj_property("Class")
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instance = pyobj_property("Instance")
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|
|
|
class PyobjMixin(PyobjContext):
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def obj():
|
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def fget(self):
|
|
try:
|
|
return self._obj
|
|
except AttributeError:
|
|
self._obj = obj = self._getobj()
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|
return obj
|
|
def fset(self, value):
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self._obj = value
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return property(fget, fset, None, "underlying python object")
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obj = obj()
|
|
|
|
def _getobj(self):
|
|
return getattr(self.parent.obj, self.name)
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|
|
|
def getmodpath(self, stopatmodule=True, includemodule=False):
|
|
""" return python path relative to the containing module. """
|
|
chain = self.listchain()
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|
chain.reverse()
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|
parts = []
|
|
for node in chain:
|
|
if isinstance(node, Instance):
|
|
continue
|
|
name = node.name
|
|
if isinstance(node, Module):
|
|
assert name.endswith(".py")
|
|
name = name[:-3]
|
|
if stopatmodule:
|
|
if includemodule:
|
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parts.append(name)
|
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break
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parts.append(name)
|
|
parts.reverse()
|
|
s = ".".join(parts)
|
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return s.replace(".[", "[")
|
|
|
|
def _getfslineno(self):
|
|
return getfslineno(self.obj)
|
|
|
|
def reportinfo(self):
|
|
# XXX caching?
|
|
obj = self.obj
|
|
compat_co_firstlineno = getattr(obj, 'compat_co_firstlineno', None)
|
|
if isinstance(compat_co_firstlineno, int):
|
|
# nose compatibility
|
|
fspath = sys.modules[obj.__module__].__file__
|
|
if fspath.endswith(".pyc"):
|
|
fspath = fspath[:-1]
|
|
lineno = compat_co_firstlineno
|
|
else:
|
|
fspath, lineno = getfslineno(obj)
|
|
modpath = self.getmodpath()
|
|
assert isinstance(lineno, int)
|
|
return fspath, lineno, modpath
|
|
|
|
class PyCollector(PyobjMixin, pytest.Collector):
|
|
|
|
def funcnamefilter(self, name):
|
|
return self._matches_prefix_or_glob_option('python_functions', name)
|
|
|
|
def isnosetest(self, obj):
|
|
""" Look for the __test__ attribute, which is applied by the
|
|
@nose.tools.istest decorator
|
|
"""
|
|
# We explicitly check for "is True" here to not mistakenly treat
|
|
# classes with a custom __getattr__ returning something truthy (like a
|
|
# function) as test classes.
|
|
return safe_getattr(obj, '__test__', False) is True
|
|
|
|
def classnamefilter(self, name):
|
|
return self._matches_prefix_or_glob_option('python_classes', name)
|
|
|
|
def istestfunction(self, obj, name):
|
|
return (
|
|
(self.funcnamefilter(name) or self.isnosetest(obj))
|
|
and safe_getattr(obj, "__call__", False) and getfixturemarker(obj) is None
|
|
)
|
|
|
|
def istestclass(self, obj, name):
|
|
return self.classnamefilter(name) or self.isnosetest(obj)
|
|
|
|
def _matches_prefix_or_glob_option(self, option_name, name):
|
|
"""
|
|
checks if the given name matches the prefix or glob-pattern defined
|
|
in ini configuration.
|
|
"""
|
|
for option in self.config.getini(option_name):
|
|
if name.startswith(option):
|
|
return True
|
|
# check that name looks like a glob-string before calling fnmatch
|
|
# because this is called for every name in each collected module,
|
|
# and fnmatch is somewhat expensive to call
|
|
elif ('*' in option or '?' in option or '[' in option) and \
|
|
fnmatch.fnmatch(name, option):
|
|
return True
|
|
return False
|
|
|
|
def collect(self):
|
|
if not getattr(self.obj, "__test__", True):
|
|
return []
|
|
|
|
# NB. we avoid random getattrs and peek in the __dict__ instead
|
|
# (XXX originally introduced from a PyPy need, still true?)
|
|
dicts = [getattr(self.obj, '__dict__', {})]
|
|
for basecls in inspect.getmro(self.obj.__class__):
|
|
dicts.append(basecls.__dict__)
|
|
seen = {}
|
|
l = []
|
|
for dic in dicts:
|
|
for name, obj in list(dic.items()):
|
|
if name in seen:
|
|
continue
|
|
seen[name] = True
|
|
res = self.makeitem(name, obj)
|
|
if res is None:
|
|
continue
|
|
if not isinstance(res, list):
|
|
res = [res]
|
|
l.extend(res)
|
|
l.sort(key=lambda item: item.reportinfo()[:2])
|
|
return l
|
|
|
|
def makeitem(self, name, obj):
|
|
#assert self.ihook.fspath == self.fspath, self
|
|
return self.ihook.pytest_pycollect_makeitem(
|
|
collector=self, name=name, obj=obj)
|
|
|
|
def _genfunctions(self, name, funcobj):
|
|
module = self.getparent(Module).obj
|
|
clscol = self.getparent(Class)
|
|
cls = clscol and clscol.obj or None
|
|
transfer_markers(funcobj, cls, module)
|
|
fm = self.session._fixturemanager
|
|
fixtureinfo = fm.getfixtureinfo(self, funcobj, cls)
|
|
metafunc = Metafunc(funcobj, fixtureinfo, self.config,
|
|
cls=cls, module=module)
|
|
methods = []
|
|
if hasattr(module, "pytest_generate_tests"):
|
|
methods.append(module.pytest_generate_tests)
|
|
if hasattr(cls, "pytest_generate_tests"):
|
|
methods.append(cls().pytest_generate_tests)
|
|
if methods:
|
|
self.ihook.pytest_generate_tests.call_extra(methods,
|
|
dict(metafunc=metafunc))
|
|
else:
|
|
self.ihook.pytest_generate_tests(metafunc=metafunc)
|
|
|
|
Function = self._getcustomclass("Function")
|
|
if not metafunc._calls:
|
|
yield Function(name, parent=self, fixtureinfo=fixtureinfo)
|
|
else:
|
|
# add funcargs() as fixturedefs to fixtureinfo.arg2fixturedefs
|
|
add_funcarg_pseudo_fixture_def(self, metafunc, fm)
|
|
|
|
for callspec in metafunc._calls:
|
|
subname = "%s[%s]" %(name, callspec.id)
|
|
yield Function(name=subname, parent=self,
|
|
callspec=callspec, callobj=funcobj,
|
|
fixtureinfo=fixtureinfo,
|
|
keywords={callspec.id:True})
|
|
|
|
def add_funcarg_pseudo_fixture_def(collector, metafunc, fixturemanager):
|
|
# this function will transform all collected calls to a functions
|
|
# if they use direct funcargs (i.e. direct parametrization)
|
|
# because we want later test execution to be able to rely on
|
|
# an existing FixtureDef structure for all arguments.
|
|
# XXX we can probably avoid this algorithm if we modify CallSpec2
|
|
# to directly care for creating the fixturedefs within its methods.
|
|
if not metafunc._calls[0].funcargs:
|
|
return # this function call does not have direct parametrization
|
|
# collect funcargs of all callspecs into a list of values
|
|
arg2params = {}
|
|
arg2scope = {}
|
|
for callspec in metafunc._calls:
|
|
for argname, argvalue in callspec.funcargs.items():
|
|
assert argname not in callspec.params
|
|
callspec.params[argname] = argvalue
|
|
arg2params_list = arg2params.setdefault(argname, [])
|
|
callspec.indices[argname] = len(arg2params_list)
|
|
arg2params_list.append(argvalue)
|
|
if argname not in arg2scope:
|
|
scopenum = callspec._arg2scopenum.get(argname,
|
|
scopenum_function)
|
|
arg2scope[argname] = scopes[scopenum]
|
|
callspec.funcargs.clear()
|
|
|
|
# register artificial FixtureDef's so that later at test execution
|
|
# time we can rely on a proper FixtureDef to exist for fixture setup.
|
|
arg2fixturedefs = metafunc._arg2fixturedefs
|
|
for argname, valuelist in arg2params.items():
|
|
# if we have a scope that is higher than function we need
|
|
# to make sure we only ever create an according fixturedef on
|
|
# a per-scope basis. We thus store and cache the fixturedef on the
|
|
# node related to the scope.
|
|
scope = arg2scope[argname]
|
|
node = None
|
|
if scope != "function":
|
|
node = get_scope_node(collector, scope)
|
|
if node is None:
|
|
assert scope == "class" and isinstance(collector, Module)
|
|
# use module-level collector for class-scope (for now)
|
|
node = collector
|
|
if node and argname in node._name2pseudofixturedef:
|
|
arg2fixturedefs[argname] = [node._name2pseudofixturedef[argname]]
|
|
else:
|
|
fixturedef = FixtureDef(fixturemanager, '', argname,
|
|
get_direct_param_fixture_func,
|
|
arg2scope[argname],
|
|
valuelist, False, False)
|
|
arg2fixturedefs[argname] = [fixturedef]
|
|
if node is not None:
|
|
node._name2pseudofixturedef[argname] = fixturedef
|
|
|
|
|
|
def get_direct_param_fixture_func(request):
|
|
return request.param
|
|
|
|
class FuncFixtureInfo:
|
|
def __init__(self, argnames, names_closure, name2fixturedefs):
|
|
self.argnames = argnames
|
|
self.names_closure = names_closure
|
|
self.name2fixturedefs = name2fixturedefs
|
|
|
|
|
|
def _marked(func, mark):
|
|
""" Returns True if :func: is already marked with :mark:, False otherwise.
|
|
This can happen if marker is applied to class and the test file is
|
|
invoked more than once.
|
|
"""
|
|
try:
|
|
func_mark = getattr(func, mark.name)
|
|
except AttributeError:
|
|
return False
|
|
return mark.args == func_mark.args and mark.kwargs == func_mark.kwargs
|
|
|
|
|
|
def transfer_markers(funcobj, cls, mod):
|
|
# XXX this should rather be code in the mark plugin or the mark
|
|
# plugin should merge with the python plugin.
|
|
for holder in (cls, mod):
|
|
try:
|
|
pytestmark = holder.pytestmark
|
|
except AttributeError:
|
|
continue
|
|
if isinstance(pytestmark, list):
|
|
for mark in pytestmark:
|
|
if not _marked(funcobj, mark):
|
|
mark(funcobj)
|
|
else:
|
|
if not _marked(funcobj, pytestmark):
|
|
pytestmark(funcobj)
|
|
|
|
class Module(pytest.File, PyCollector):
|
|
""" Collector for test classes and functions. """
|
|
def _getobj(self):
|
|
return self._memoizedcall('_obj', self._importtestmodule)
|
|
|
|
def collect(self):
|
|
self.session._fixturemanager.parsefactories(self)
|
|
return super(Module, self).collect()
|
|
|
|
def _importtestmodule(self):
|
|
# we assume we are only called once per module
|
|
importmode = self.config.getoption("--import-mode")
|
|
try:
|
|
mod = self.fspath.pyimport(ensuresyspath=importmode)
|
|
except SyntaxError:
|
|
raise self.CollectError(
|
|
py.code.ExceptionInfo().getrepr(style="short"))
|
|
except self.fspath.ImportMismatchError:
|
|
e = sys.exc_info()[1]
|
|
raise self.CollectError(
|
|
"import file mismatch:\n"
|
|
"imported module %r has this __file__ attribute:\n"
|
|
" %s\n"
|
|
"which is not the same as the test file we want to collect:\n"
|
|
" %s\n"
|
|
"HINT: remove __pycache__ / .pyc files and/or use a "
|
|
"unique basename for your test file modules"
|
|
% e.args
|
|
)
|
|
#print "imported test module", mod
|
|
self.config.pluginmanager.consider_module(mod)
|
|
return mod
|
|
|
|
def setup(self):
|
|
setup_module = xunitsetup(self.obj, "setUpModule")
|
|
if setup_module is None:
|
|
setup_module = xunitsetup(self.obj, "setup_module")
|
|
if setup_module is not None:
|
|
#XXX: nose compat hack, move to nose plugin
|
|
# if it takes a positional arg, its probably a pytest style one
|
|
# so we pass the current module object
|
|
if _has_positional_arg(setup_module):
|
|
setup_module(self.obj)
|
|
else:
|
|
setup_module()
|
|
fin = getattr(self.obj, 'tearDownModule', None)
|
|
if fin is None:
|
|
fin = getattr(self.obj, 'teardown_module', None)
|
|
if fin is not None:
|
|
#XXX: nose compat hack, move to nose plugin
|
|
# if it takes a positional arg, it's probably a pytest style one
|
|
# so we pass the current module object
|
|
if _has_positional_arg(fin):
|
|
finalizer = lambda: fin(self.obj)
|
|
else:
|
|
finalizer = fin
|
|
self.addfinalizer(finalizer)
|
|
|
|
|
|
class Class(PyCollector):
|
|
""" Collector for test methods. """
|
|
def collect(self):
|
|
if hasinit(self.obj):
|
|
self.warn("C1", "cannot collect test class %r because it has a "
|
|
"__init__ constructor" % self.obj.__name__)
|
|
return []
|
|
return [self._getcustomclass("Instance")(name="()", parent=self)]
|
|
|
|
def setup(self):
|
|
setup_class = xunitsetup(self.obj, 'setup_class')
|
|
if setup_class is not None:
|
|
setup_class = getattr(setup_class, 'im_func', setup_class)
|
|
setup_class = getattr(setup_class, '__func__', setup_class)
|
|
setup_class(self.obj)
|
|
|
|
fin_class = getattr(self.obj, 'teardown_class', None)
|
|
if fin_class is not None:
|
|
fin_class = getattr(fin_class, 'im_func', fin_class)
|
|
fin_class = getattr(fin_class, '__func__', fin_class)
|
|
self.addfinalizer(lambda: fin_class(self.obj))
|
|
|
|
class Instance(PyCollector):
|
|
def _getobj(self):
|
|
obj = self.parent.obj()
|
|
return obj
|
|
|
|
def collect(self):
|
|
self.session._fixturemanager.parsefactories(self)
|
|
return super(Instance, self).collect()
|
|
|
|
def newinstance(self):
|
|
self.obj = self._getobj()
|
|
return self.obj
|
|
|
|
class FunctionMixin(PyobjMixin):
|
|
""" mixin for the code common to Function and Generator.
|
|
"""
|
|
|
|
def setup(self):
|
|
""" perform setup for this test function. """
|
|
if hasattr(self, '_preservedparent'):
|
|
obj = self._preservedparent
|
|
elif isinstance(self.parent, Instance):
|
|
obj = self.parent.newinstance()
|
|
self.obj = self._getobj()
|
|
else:
|
|
obj = self.parent.obj
|
|
if inspect.ismethod(self.obj):
|
|
setup_name = 'setup_method'
|
|
teardown_name = 'teardown_method'
|
|
else:
|
|
setup_name = 'setup_function'
|
|
teardown_name = 'teardown_function'
|
|
setup_func_or_method = xunitsetup(obj, setup_name)
|
|
if setup_func_or_method is not None:
|
|
setup_func_or_method(self.obj)
|
|
fin = getattr(obj, teardown_name, None)
|
|
if fin is not None:
|
|
self.addfinalizer(lambda: fin(self.obj))
|
|
|
|
def _prunetraceback(self, excinfo):
|
|
if hasattr(self, '_obj') and not self.config.option.fulltrace:
|
|
code = py.code.Code(get_real_func(self.obj))
|
|
path, firstlineno = code.path, code.firstlineno
|
|
traceback = excinfo.traceback
|
|
ntraceback = traceback.cut(path=path, firstlineno=firstlineno)
|
|
if ntraceback == traceback:
|
|
ntraceback = ntraceback.cut(path=path)
|
|
if ntraceback == traceback:
|
|
#ntraceback = ntraceback.cut(excludepath=cutdir2)
|
|
ntraceback = ntraceback.filter(filter_traceback)
|
|
if not ntraceback:
|
|
ntraceback = traceback
|
|
|
|
excinfo.traceback = ntraceback.filter()
|
|
# issue364: mark all but first and last frames to
|
|
# only show a single-line message for each frame
|
|
if self.config.option.tbstyle == "auto":
|
|
if len(excinfo.traceback) > 2:
|
|
for entry in excinfo.traceback[1:-1]:
|
|
entry.set_repr_style('short')
|
|
|
|
def _repr_failure_py(self, excinfo, style="long"):
|
|
if excinfo.errisinstance(pytest.fail.Exception):
|
|
if not excinfo.value.pytrace:
|
|
return str(excinfo.value)
|
|
return super(FunctionMixin, self)._repr_failure_py(excinfo,
|
|
style=style)
|
|
|
|
def repr_failure(self, excinfo, outerr=None):
|
|
assert outerr is None, "XXX outerr usage is deprecated"
|
|
style = self.config.option.tbstyle
|
|
if style == "auto":
|
|
style = "long"
|
|
return self._repr_failure_py(excinfo, style=style)
|
|
|
|
|
|
class Generator(FunctionMixin, PyCollector):
|
|
def collect(self):
|
|
# test generators are seen as collectors but they also
|
|
# invoke setup/teardown on popular request
|
|
# (induced by the common "test_*" naming shared with normal tests)
|
|
self.session._setupstate.prepare(self)
|
|
# see FunctionMixin.setup and test_setupstate_is_preserved_134
|
|
self._preservedparent = self.parent.obj
|
|
l = []
|
|
seen = {}
|
|
for i, x in enumerate(self.obj()):
|
|
name, call, args = self.getcallargs(x)
|
|
if not callable(call):
|
|
raise TypeError("%r yielded non callable test %r" %(self.obj, call,))
|
|
if name is None:
|
|
name = "[%d]" % i
|
|
else:
|
|
name = "['%s']" % name
|
|
if name in seen:
|
|
raise ValueError("%r generated tests with non-unique name %r" %(self, name))
|
|
seen[name] = True
|
|
l.append(self.Function(name, self, args=args, callobj=call))
|
|
return l
|
|
|
|
def getcallargs(self, obj):
|
|
if not isinstance(obj, (tuple, list)):
|
|
obj = (obj,)
|
|
# explict naming
|
|
if isinstance(obj[0], py.builtin._basestring):
|
|
name = obj[0]
|
|
obj = obj[1:]
|
|
else:
|
|
name = None
|
|
call, args = obj[0], obj[1:]
|
|
return name, call, args
|
|
|
|
|
|
def hasinit(obj):
|
|
init = getattr(obj, '__init__', None)
|
|
if init:
|
|
if init != object.__init__:
|
|
return True
|
|
|
|
|
|
|
|
def fillfixtures(function):
|
|
""" fill missing funcargs for a test function. """
|
|
try:
|
|
request = function._request
|
|
except AttributeError:
|
|
# XXX this special code path is only expected to execute
|
|
# with the oejskit plugin. It uses classes with funcargs
|
|
# and we thus have to work a bit to allow this.
|
|
fm = function.session._fixturemanager
|
|
fi = fm.getfixtureinfo(function.parent, function.obj, None)
|
|
function._fixtureinfo = fi
|
|
request = function._request = FixtureRequest(function)
|
|
request._fillfixtures()
|
|
# prune out funcargs for jstests
|
|
newfuncargs = {}
|
|
for name in fi.argnames:
|
|
newfuncargs[name] = function.funcargs[name]
|
|
function.funcargs = newfuncargs
|
|
else:
|
|
request._fillfixtures()
|
|
|
|
|
|
_notexists = object()
|
|
|
|
class CallSpec2(object):
|
|
def __init__(self, metafunc):
|
|
self.metafunc = metafunc
|
|
self.funcargs = {}
|
|
self._idlist = []
|
|
self.params = {}
|
|
self._globalid = _notexists
|
|
self._globalid_args = set()
|
|
self._globalparam = _notexists
|
|
self._arg2scopenum = {} # used for sorting parametrized resources
|
|
self.keywords = {}
|
|
self.indices = {}
|
|
|
|
def copy(self, metafunc):
|
|
cs = CallSpec2(self.metafunc)
|
|
cs.funcargs.update(self.funcargs)
|
|
cs.params.update(self.params)
|
|
cs.keywords.update(self.keywords)
|
|
cs.indices.update(self.indices)
|
|
cs._arg2scopenum.update(self._arg2scopenum)
|
|
cs._idlist = list(self._idlist)
|
|
cs._globalid = self._globalid
|
|
cs._globalid_args = self._globalid_args
|
|
cs._globalparam = self._globalparam
|
|
return cs
|
|
|
|
def _checkargnotcontained(self, arg):
|
|
if arg in self.params or arg in self.funcargs:
|
|
raise ValueError("duplicate %r" %(arg,))
|
|
|
|
def getparam(self, name):
|
|
try:
|
|
return self.params[name]
|
|
except KeyError:
|
|
if self._globalparam is _notexists:
|
|
raise ValueError(name)
|
|
return self._globalparam
|
|
|
|
@property
|
|
def id(self):
|
|
return "-".join(map(str, filter(None, self._idlist)))
|
|
|
|
def setmulti(self, valtypes, argnames, valset, id, keywords, scopenum,
|
|
param_index):
|
|
for arg,val in zip(argnames, valset):
|
|
self._checkargnotcontained(arg)
|
|
valtype_for_arg = valtypes[arg]
|
|
getattr(self, valtype_for_arg)[arg] = val
|
|
self.indices[arg] = param_index
|
|
self._arg2scopenum[arg] = scopenum
|
|
if val is _notexists:
|
|
self._emptyparamspecified = True
|
|
self._idlist.append(id)
|
|
self.keywords.update(keywords)
|
|
|
|
def setall(self, funcargs, id, param):
|
|
for x in funcargs:
|
|
self._checkargnotcontained(x)
|
|
self.funcargs.update(funcargs)
|
|
if id is not _notexists:
|
|
self._idlist.append(id)
|
|
if param is not _notexists:
|
|
assert self._globalparam is _notexists
|
|
self._globalparam = param
|
|
for arg in funcargs:
|
|
self._arg2scopenum[arg] = scopenum_function
|
|
|
|
|
|
class FuncargnamesCompatAttr:
|
|
""" helper class so that Metafunc, Function and FixtureRequest
|
|
don't need to each define the "funcargnames" compatibility attribute.
|
|
"""
|
|
@property
|
|
def funcargnames(self):
|
|
""" alias attribute for ``fixturenames`` for pre-2.3 compatibility"""
|
|
return self.fixturenames
|
|
|
|
class Metafunc(FuncargnamesCompatAttr):
|
|
"""
|
|
Metafunc objects are passed to the ``pytest_generate_tests`` hook.
|
|
They help to inspect a test function and to generate tests according to
|
|
test configuration or values specified in the class or module where a
|
|
test function is defined.
|
|
|
|
:ivar fixturenames: set of fixture names required by the test function
|
|
|
|
:ivar function: underlying python test function
|
|
|
|
:ivar cls: class object where the test function is defined in or ``None``.
|
|
|
|
:ivar module: the module object where the test function is defined in.
|
|
|
|
:ivar config: access to the :class:`_pytest.config.Config` object for the
|
|
test session.
|
|
|
|
:ivar funcargnames:
|
|
.. deprecated:: 2.3
|
|
Use ``fixturenames`` instead.
|
|
"""
|
|
def __init__(self, function, fixtureinfo, config, cls=None, module=None):
|
|
self.config = config
|
|
self.module = module
|
|
self.function = function
|
|
self.fixturenames = fixtureinfo.names_closure
|
|
self._arg2fixturedefs = fixtureinfo.name2fixturedefs
|
|
self.cls = cls
|
|
self._calls = []
|
|
self._ids = py.builtin.set()
|
|
|
|
def parametrize(self, argnames, argvalues, indirect=False, ids=None,
|
|
scope=None):
|
|
""" Add new invocations to the underlying test function using the list
|
|
of argvalues for the given argnames. Parametrization is performed
|
|
during the collection phase. If you need to setup expensive resources
|
|
see about setting indirect to do it rather at test setup time.
|
|
|
|
:arg argnames: a comma-separated string denoting one or more argument
|
|
names, or a list/tuple of argument strings.
|
|
|
|
:arg argvalues: The list of argvalues determines how often a
|
|
test is invoked with different argument values. If only one
|
|
argname was specified argvalues is a list of values. If N
|
|
argnames were specified, argvalues must be a list of N-tuples,
|
|
where each tuple-element specifies a value for its respective
|
|
argname.
|
|
|
|
:arg indirect: The list of argnames or boolean. A list of arguments'
|
|
names (subset of argnames). If True the list contains all names from
|
|
the argnames. Each argvalue corresponding to an argname in this list will
|
|
be passed as request.param to its respective argname fixture
|
|
function so that it can perform more expensive setups during the
|
|
setup phase of a test rather than at collection time.
|
|
|
|
:arg ids: list of string ids, or a callable.
|
|
If strings, each is corresponding to the argvalues so that they are
|
|
part of the test id.
|
|
If callable, it should take one argument (a single argvalue) and return
|
|
a string or return None. If None, the automatically generated id for that
|
|
argument will be used.
|
|
If no ids are provided they will be generated automatically from
|
|
the argvalues.
|
|
|
|
:arg scope: if specified it denotes the scope of the parameters.
|
|
The scope is used for grouping tests by parameter instances.
|
|
It will also override any fixture-function defined scope, allowing
|
|
to set a dynamic scope using test context or configuration.
|
|
"""
|
|
|
|
# individual parametrized argument sets can be wrapped in a series
|
|
# of markers in which case we unwrap the values and apply the mark
|
|
# at Function init
|
|
newkeywords = {}
|
|
unwrapped_argvalues = []
|
|
for i, argval in enumerate(argvalues):
|
|
while isinstance(argval, MarkDecorator):
|
|
newmark = MarkDecorator(argval.markname,
|
|
argval.args[:-1], argval.kwargs)
|
|
newmarks = newkeywords.setdefault(i, {})
|
|
newmarks[newmark.markname] = newmark
|
|
argval = argval.args[-1]
|
|
unwrapped_argvalues.append(argval)
|
|
argvalues = unwrapped_argvalues
|
|
|
|
if not isinstance(argnames, (tuple, list)):
|
|
argnames = [x.strip() for x in argnames.split(",") if x.strip()]
|
|
if len(argnames) == 1:
|
|
argvalues = [(val,) for val in argvalues]
|
|
if not argvalues:
|
|
argvalues = [(_notexists,) * len(argnames)]
|
|
|
|
if scope is None:
|
|
scope = "function"
|
|
scopenum = scopes.index(scope)
|
|
valtypes = {}
|
|
for arg in argnames:
|
|
if arg not in self.fixturenames:
|
|
raise ValueError("%r uses no fixture %r" %(self.function, arg))
|
|
|
|
if indirect is True:
|
|
valtypes = dict.fromkeys(argnames, "params")
|
|
elif indirect is False:
|
|
valtypes = dict.fromkeys(argnames, "funcargs")
|
|
elif isinstance(indirect, (tuple, list)):
|
|
valtypes = dict.fromkeys(argnames, "funcargs")
|
|
for arg in indirect:
|
|
if arg not in argnames:
|
|
raise ValueError("indirect given to %r: fixture %r doesn't exist" %(
|
|
self.function, arg))
|
|
valtypes[arg] = "params"
|
|
idfn = None
|
|
if callable(ids):
|
|
idfn = ids
|
|
ids = None
|
|
if ids and len(ids) != len(argvalues):
|
|
raise ValueError('%d tests specified with %d ids' %(
|
|
len(argvalues), len(ids)))
|
|
if not ids:
|
|
ids = idmaker(argnames, argvalues, idfn)
|
|
newcalls = []
|
|
for callspec in self._calls or [CallSpec2(self)]:
|
|
for param_index, valset in enumerate(argvalues):
|
|
assert len(valset) == len(argnames)
|
|
newcallspec = callspec.copy(self)
|
|
newcallspec.setmulti(valtypes, argnames, valset, ids[param_index],
|
|
newkeywords.get(param_index, {}), scopenum,
|
|
param_index)
|
|
newcalls.append(newcallspec)
|
|
self._calls = newcalls
|
|
|
|
def addcall(self, funcargs=None, id=_notexists, param=_notexists):
|
|
""" (deprecated, use parametrize) Add a new call to the underlying
|
|
test function during the collection phase of a test run. Note that
|
|
request.addcall() is called during the test collection phase prior and
|
|
independently to actual test execution. You should only use addcall()
|
|
if you need to specify multiple arguments of a test function.
|
|
|
|
:arg funcargs: argument keyword dictionary used when invoking
|
|
the test function.
|
|
|
|
:arg id: used for reporting and identification purposes. If you
|
|
don't supply an `id` an automatic unique id will be generated.
|
|
|
|
:arg param: a parameter which will be exposed to a later fixture function
|
|
invocation through the ``request.param`` attribute.
|
|
"""
|
|
assert funcargs is None or isinstance(funcargs, dict)
|
|
if funcargs is not None:
|
|
for name in funcargs:
|
|
if name not in self.fixturenames:
|
|
pytest.fail("funcarg %r not used in this function." % name)
|
|
else:
|
|
funcargs = {}
|
|
if id is None:
|
|
raise ValueError("id=None not allowed")
|
|
if id is _notexists:
|
|
id = len(self._calls)
|
|
id = str(id)
|
|
if id in self._ids:
|
|
raise ValueError("duplicate id %r" % id)
|
|
self._ids.add(id)
|
|
|
|
cs = CallSpec2(self)
|
|
cs.setall(funcargs, id, param)
|
|
self._calls.append(cs)
|
|
|
|
|
|
if _PY3:
|
|
import codecs
|
|
|
|
def _escape_bytes(val):
|
|
"""
|
|
If val is pure ascii, returns it as a str(), otherwise escapes
|
|
into a sequence of escaped bytes:
|
|
b'\xc3\xb4\xc5\xd6' -> u'\\xc3\\xb4\\xc5\\xd6'
|
|
|
|
note:
|
|
the obvious "v.decode('unicode-escape')" will return
|
|
valid utf-8 unicode if it finds them in the string, but we
|
|
want to return escaped bytes for any byte, even if they match
|
|
a utf-8 string.
|
|
"""
|
|
if val:
|
|
# source: http://goo.gl/bGsnwC
|
|
encoded_bytes, _ = codecs.escape_encode(val)
|
|
return encoded_bytes.decode('ascii')
|
|
else:
|
|
# empty bytes crashes codecs.escape_encode (#1087)
|
|
return ''
|
|
else:
|
|
def _escape_bytes(val):
|
|
"""
|
|
In py2 bytes and str are the same type, so return it unchanged if it
|
|
is a full ascii string, otherwise escape it into its binary form.
|
|
"""
|
|
try:
|
|
return val.decode('ascii')
|
|
except UnicodeDecodeError:
|
|
return val.encode('string-escape')
|
|
|
|
|
|
def _idval(val, argname, idx, idfn):
|
|
if idfn:
|
|
try:
|
|
s = idfn(val)
|
|
if s:
|
|
return s
|
|
except Exception:
|
|
pass
|
|
|
|
if isinstance(val, bytes):
|
|
return _escape_bytes(val)
|
|
elif isinstance(val, (float, int, str, bool, NoneType)):
|
|
return str(val)
|
|
elif isinstance(val, REGEX_TYPE):
|
|
return val.pattern
|
|
elif enum is not None and isinstance(val, enum.Enum):
|
|
return str(val)
|
|
elif isclass(val) and hasattr(val, '__name__'):
|
|
return val.__name__
|
|
elif _PY2 and isinstance(val, unicode):
|
|
# special case for python 2: if a unicode string is
|
|
# convertible to ascii, return it as an str() object instead
|
|
try:
|
|
return str(val)
|
|
except UnicodeError:
|
|
# fallthrough
|
|
pass
|
|
return str(argname)+str(idx)
|
|
|
|
def _idvalset(idx, valset, argnames, idfn):
|
|
this_id = [_idval(val, argname, idx, idfn)
|
|
for val, argname in zip(valset, argnames)]
|
|
return "-".join(this_id)
|
|
|
|
def idmaker(argnames, argvalues, idfn=None):
|
|
ids = [_idvalset(valindex, valset, argnames, idfn)
|
|
for valindex, valset in enumerate(argvalues)]
|
|
if len(set(ids)) < len(ids):
|
|
# user may have provided a bad idfn which means the ids are not unique
|
|
ids = [str(i) + testid for i, testid in enumerate(ids)]
|
|
return ids
|
|
|
|
def showfixtures(config):
|
|
from _pytest.main import wrap_session
|
|
return wrap_session(config, _showfixtures_main)
|
|
|
|
def _showfixtures_main(config, session):
|
|
import _pytest.config
|
|
session.perform_collect()
|
|
curdir = py.path.local()
|
|
tw = _pytest.config.create_terminal_writer(config)
|
|
verbose = config.getvalue("verbose")
|
|
|
|
fm = session._fixturemanager
|
|
|
|
available = []
|
|
for argname, fixturedefs in fm._arg2fixturedefs.items():
|
|
assert fixturedefs is not None
|
|
if not fixturedefs:
|
|
continue
|
|
fixturedef = fixturedefs[-1]
|
|
loc = getlocation(fixturedef.func, curdir)
|
|
available.append((len(fixturedef.baseid),
|
|
fixturedef.func.__module__,
|
|
curdir.bestrelpath(loc),
|
|
fixturedef.argname, fixturedef))
|
|
|
|
available.sort()
|
|
currentmodule = None
|
|
for baseid, module, bestrel, argname, fixturedef in available:
|
|
if currentmodule != module:
|
|
if not module.startswith("_pytest."):
|
|
tw.line()
|
|
tw.sep("-", "fixtures defined from %s" %(module,))
|
|
currentmodule = module
|
|
if verbose <= 0 and argname[0] == "_":
|
|
continue
|
|
if verbose > 0:
|
|
funcargspec = "%s -- %s" %(argname, bestrel,)
|
|
else:
|
|
funcargspec = argname
|
|
tw.line(funcargspec, green=True)
|
|
loc = getlocation(fixturedef.func, curdir)
|
|
doc = fixturedef.func.__doc__ or ""
|
|
if doc:
|
|
for line in doc.strip().split("\n"):
|
|
tw.line(" " + line.strip())
|
|
else:
|
|
tw.line(" %s: no docstring available" %(loc,),
|
|
red=True)
|
|
|
|
def getlocation(function, curdir):
|
|
import inspect
|
|
fn = py.path.local(inspect.getfile(function))
|
|
lineno = py.builtin._getcode(function).co_firstlineno
|
|
if fn.relto(curdir):
|
|
fn = fn.relto(curdir)
|
|
return "%s:%d" %(fn, lineno+1)
|
|
|
|
# builtin pytest.raises helper
|
|
|
|
def raises(expected_exception, *args, **kwargs):
|
|
""" assert that a code block/function call raises @expected_exception
|
|
and raise a failure exception otherwise.
|
|
|
|
This helper produces a ``py.code.ExceptionInfo()`` object.
|
|
|
|
If using Python 2.5 or above, you may use this function as a
|
|
context manager::
|
|
|
|
>>> with raises(ZeroDivisionError):
|
|
... 1/0
|
|
|
|
.. note::
|
|
|
|
When using ``pytest.raises`` as a context manager, it's worthwhile to
|
|
note that normal context manager rules apply and that the exception
|
|
raised *must* be the final line in the scope of the context manager.
|
|
Lines of code after that, within the scope of the context manager will
|
|
not be executed. For example::
|
|
|
|
>>> with raises(OSError) as err:
|
|
assert 1 == 1 # this will execute as expected
|
|
raise OSError(errno.EEXISTS, 'directory exists')
|
|
assert err.errno == errno.EEXISTS # this will not execute
|
|
|
|
Instead, the following approach must be taken (note the difference in
|
|
scope)::
|
|
|
|
>>> with raises(OSError) as err:
|
|
assert 1 == 1 # this will execute as expected
|
|
raise OSError(errno.EEXISTS, 'directory exists')
|
|
|
|
assert err.errno == errno.EEXISTS # this will now execute
|
|
|
|
Or you can specify a callable by passing a to-be-called lambda::
|
|
|
|
>>> raises(ZeroDivisionError, lambda: 1/0)
|
|
<ExceptionInfo ...>
|
|
|
|
or you can specify an arbitrary callable with arguments::
|
|
|
|
>>> def f(x): return 1/x
|
|
...
|
|
>>> raises(ZeroDivisionError, f, 0)
|
|
<ExceptionInfo ...>
|
|
>>> raises(ZeroDivisionError, f, x=0)
|
|
<ExceptionInfo ...>
|
|
|
|
A third possibility is to use a string to be executed::
|
|
|
|
>>> raises(ZeroDivisionError, "f(0)")
|
|
<ExceptionInfo ...>
|
|
|
|
Performance note:
|
|
-----------------
|
|
|
|
Similar to caught exception objects in Python, explicitly clearing
|
|
local references to returned ``py.code.ExceptionInfo`` objects can
|
|
help the Python interpreter speed up its garbage collection.
|
|
|
|
Clearing those references breaks a reference cycle
|
|
(``ExceptionInfo`` --> caught exception --> frame stack raising
|
|
the exception --> current frame stack --> local variables -->
|
|
``ExceptionInfo``) which makes Python keep all objects referenced
|
|
from that cycle (including all local variables in the current
|
|
frame) alive until the next cyclic garbage collection run. See the
|
|
official Python ``try`` statement documentation for more detailed
|
|
information.
|
|
|
|
"""
|
|
__tracebackhide__ = True
|
|
if expected_exception is AssertionError:
|
|
# we want to catch a AssertionError
|
|
# replace our subclass with the builtin one
|
|
# see https://github.com/pytest-dev/pytest/issues/176
|
|
from _pytest.assertion.util import BuiltinAssertionError \
|
|
as expected_exception
|
|
msg = ("exceptions must be old-style classes or"
|
|
" derived from BaseException, not %s")
|
|
if isinstance(expected_exception, tuple):
|
|
for exc in expected_exception:
|
|
if not isclass(exc):
|
|
raise TypeError(msg % type(exc))
|
|
elif not isclass(expected_exception):
|
|
raise TypeError(msg % type(expected_exception))
|
|
|
|
if not args:
|
|
return RaisesContext(expected_exception)
|
|
elif isinstance(args[0], str):
|
|
code, = args
|
|
assert isinstance(code, str)
|
|
frame = sys._getframe(1)
|
|
loc = frame.f_locals.copy()
|
|
loc.update(kwargs)
|
|
#print "raises frame scope: %r" % frame.f_locals
|
|
try:
|
|
code = py.code.Source(code).compile()
|
|
py.builtin.exec_(code, frame.f_globals, loc)
|
|
# XXX didn'T mean f_globals == f_locals something special?
|
|
# this is destroyed here ...
|
|
except expected_exception:
|
|
return py.code.ExceptionInfo()
|
|
else:
|
|
func = args[0]
|
|
try:
|
|
func(*args[1:], **kwargs)
|
|
except expected_exception:
|
|
return py.code.ExceptionInfo()
|
|
pytest.fail("DID NOT RAISE")
|
|
|
|
class RaisesContext(object):
|
|
def __init__(self, expected_exception):
|
|
self.expected_exception = expected_exception
|
|
self.excinfo = None
|
|
|
|
def __enter__(self):
|
|
self.excinfo = object.__new__(py.code.ExceptionInfo)
|
|
return self.excinfo
|
|
|
|
def __exit__(self, *tp):
|
|
__tracebackhide__ = True
|
|
if tp[0] is None:
|
|
pytest.fail("DID NOT RAISE")
|
|
if sys.version_info < (2, 7):
|
|
# py26: on __exit__() exc_value often does not contain the
|
|
# exception value.
|
|
# http://bugs.python.org/issue7853
|
|
if not isinstance(tp[1], BaseException):
|
|
exc_type, value, traceback = tp
|
|
tp = exc_type, exc_type(value), traceback
|
|
self.excinfo.__init__(tp)
|
|
return issubclass(self.excinfo.type, self.expected_exception)
|
|
|
|
#
|
|
# the basic pytest Function item
|
|
#
|
|
|
|
class Function(FunctionMixin, pytest.Item, FuncargnamesCompatAttr):
|
|
""" a Function Item is responsible for setting up and executing a
|
|
Python test function.
|
|
"""
|
|
_genid = None
|
|
def __init__(self, name, parent, args=None, config=None,
|
|
callspec=None, callobj=NOTSET, keywords=None, session=None,
|
|
fixtureinfo=None):
|
|
super(Function, self).__init__(name, parent, config=config,
|
|
session=session)
|
|
self._args = args
|
|
if callobj is not NOTSET:
|
|
self.obj = callobj
|
|
|
|
self.keywords.update(self.obj.__dict__)
|
|
if callspec:
|
|
self.callspec = callspec
|
|
self.keywords.update(callspec.keywords)
|
|
if keywords:
|
|
self.keywords.update(keywords)
|
|
|
|
if fixtureinfo is None:
|
|
fixtureinfo = self.session._fixturemanager.getfixtureinfo(
|
|
self.parent, self.obj, self.cls,
|
|
funcargs=not self._isyieldedfunction())
|
|
self._fixtureinfo = fixtureinfo
|
|
self.fixturenames = fixtureinfo.names_closure
|
|
self._initrequest()
|
|
|
|
def _initrequest(self):
|
|
self.funcargs = {}
|
|
if self._isyieldedfunction():
|
|
assert not hasattr(self, "callspec"), (
|
|
"yielded functions (deprecated) cannot have funcargs")
|
|
else:
|
|
if hasattr(self, "callspec"):
|
|
callspec = self.callspec
|
|
assert not callspec.funcargs
|
|
self._genid = callspec.id
|
|
if hasattr(callspec, "param"):
|
|
self.param = callspec.param
|
|
self._request = FixtureRequest(self)
|
|
|
|
@property
|
|
def function(self):
|
|
"underlying python 'function' object"
|
|
return getattr(self.obj, 'im_func', self.obj)
|
|
|
|
def _getobj(self):
|
|
name = self.name
|
|
i = name.find("[") # parametrization
|
|
if i != -1:
|
|
name = name[:i]
|
|
return getattr(self.parent.obj, name)
|
|
|
|
@property
|
|
def _pyfuncitem(self):
|
|
"(compatonly) for code expecting pytest-2.2 style request objects"
|
|
return self
|
|
|
|
def _isyieldedfunction(self):
|
|
return getattr(self, "_args", None) is not None
|
|
|
|
def runtest(self):
|
|
""" execute the underlying test function. """
|
|
self.ihook.pytest_pyfunc_call(pyfuncitem=self)
|
|
|
|
def setup(self):
|
|
# check if parametrization happend with an empty list
|
|
try:
|
|
self.callspec._emptyparamspecified
|
|
except AttributeError:
|
|
pass
|
|
else:
|
|
fs, lineno = self._getfslineno()
|
|
pytest.skip("got empty parameter set, function %s at %s:%d" %(
|
|
self.function.__name__, fs, lineno))
|
|
super(Function, self).setup()
|
|
fillfixtures(self)
|
|
|
|
|
|
scope2props = dict(session=())
|
|
scope2props["module"] = ("fspath", "module")
|
|
scope2props["class"] = scope2props["module"] + ("cls",)
|
|
scope2props["instance"] = scope2props["class"] + ("instance", )
|
|
scope2props["function"] = scope2props["instance"] + ("function", "keywords")
|
|
|
|
def scopeproperty(name=None, doc=None):
|
|
def decoratescope(func):
|
|
scopename = name or func.__name__
|
|
def provide(self):
|
|
if func.__name__ in scope2props[self.scope]:
|
|
return func(self)
|
|
raise AttributeError("%s not available in %s-scoped context" % (
|
|
scopename, self.scope))
|
|
return property(provide, None, None, func.__doc__)
|
|
return decoratescope
|
|
|
|
|
|
class FixtureRequest(FuncargnamesCompatAttr):
|
|
""" A request for a fixture from a test or fixture function.
|
|
|
|
A request object gives access to the requesting test context
|
|
and has an optional ``param`` attribute in case
|
|
the fixture is parametrized indirectly.
|
|
"""
|
|
|
|
def __init__(self, pyfuncitem):
|
|
self._pyfuncitem = pyfuncitem
|
|
#: fixture for which this request is being performed
|
|
self.fixturename = None
|
|
#: Scope string, one of "function", "cls", "module", "session"
|
|
self.scope = "function"
|
|
self._funcargs = {}
|
|
self._fixturedefs = {}
|
|
fixtureinfo = pyfuncitem._fixtureinfo
|
|
self._arg2fixturedefs = fixtureinfo.name2fixturedefs.copy()
|
|
self._arg2index = {}
|
|
self.fixturenames = fixtureinfo.names_closure
|
|
self._fixturemanager = pyfuncitem.session._fixturemanager
|
|
|
|
@property
|
|
def node(self):
|
|
""" underlying collection node (depends on current request scope)"""
|
|
return self._getscopeitem(self.scope)
|
|
|
|
|
|
def _getnextfixturedef(self, argname):
|
|
fixturedefs = self._arg2fixturedefs.get(argname, None)
|
|
if fixturedefs is None:
|
|
# we arrive here because of a a dynamic call to
|
|
# getfuncargvalue(argname) usage which was naturally
|
|
# not known at parsing/collection time
|
|
fixturedefs = self._fixturemanager.getfixturedefs(
|
|
argname, self._pyfuncitem.parent.nodeid)
|
|
self._arg2fixturedefs[argname] = fixturedefs
|
|
# fixturedefs list is immutable so we maintain a decreasing index
|
|
index = self._arg2index.get(argname, 0) - 1
|
|
if fixturedefs is None or (-index > len(fixturedefs)):
|
|
raise FixtureLookupError(argname, self)
|
|
self._arg2index[argname] = index
|
|
return fixturedefs[index]
|
|
|
|
@property
|
|
def config(self):
|
|
""" the pytest config object associated with this request. """
|
|
return self._pyfuncitem.config
|
|
|
|
|
|
@scopeproperty()
|
|
def function(self):
|
|
""" test function object if the request has a per-function scope. """
|
|
return self._pyfuncitem.obj
|
|
|
|
@scopeproperty("class")
|
|
def cls(self):
|
|
""" class (can be None) where the test function was collected. """
|
|
clscol = self._pyfuncitem.getparent(pytest.Class)
|
|
if clscol:
|
|
return clscol.obj
|
|
|
|
@property
|
|
def instance(self):
|
|
""" instance (can be None) on which test function was collected. """
|
|
# unittest support hack, see _pytest.unittest.TestCaseFunction
|
|
try:
|
|
return self._pyfuncitem._testcase
|
|
except AttributeError:
|
|
function = getattr(self, "function", None)
|
|
if function is not None:
|
|
return py.builtin._getimself(function)
|
|
|
|
@scopeproperty()
|
|
def module(self):
|
|
""" python module object where the test function was collected. """
|
|
return self._pyfuncitem.getparent(pytest.Module).obj
|
|
|
|
@scopeproperty()
|
|
def fspath(self):
|
|
""" the file system path of the test module which collected this test. """
|
|
return self._pyfuncitem.fspath
|
|
|
|
@property
|
|
def keywords(self):
|
|
""" keywords/markers dictionary for the underlying node. """
|
|
return self.node.keywords
|
|
|
|
@property
|
|
def session(self):
|
|
""" pytest session object. """
|
|
return self._pyfuncitem.session
|
|
|
|
def addfinalizer(self, finalizer):
|
|
""" add finalizer/teardown function to be called after the
|
|
last test within the requesting test context finished
|
|
execution. """
|
|
# XXX usually this method is shadowed by fixturedef specific ones
|
|
self._addfinalizer(finalizer, scope=self.scope)
|
|
|
|
def _addfinalizer(self, finalizer, scope):
|
|
colitem = self._getscopeitem(scope)
|
|
self._pyfuncitem.session._setupstate.addfinalizer(
|
|
finalizer=finalizer, colitem=colitem)
|
|
|
|
def applymarker(self, marker):
|
|
""" Apply a marker to a single test function invocation.
|
|
This method is useful if you don't want to have a keyword/marker
|
|
on all function invocations.
|
|
|
|
:arg marker: a :py:class:`_pytest.mark.MarkDecorator` object
|
|
created by a call to ``pytest.mark.NAME(...)``.
|
|
"""
|
|
try:
|
|
self.node.keywords[marker.markname] = marker
|
|
except AttributeError:
|
|
raise ValueError(marker)
|
|
|
|
def raiseerror(self, msg):
|
|
""" raise a FixtureLookupError with the given message. """
|
|
raise self._fixturemanager.FixtureLookupError(None, self, msg)
|
|
|
|
def _fillfixtures(self):
|
|
item = self._pyfuncitem
|
|
fixturenames = getattr(item, "fixturenames", self.fixturenames)
|
|
for argname in fixturenames:
|
|
if argname not in item.funcargs:
|
|
item.funcargs[argname] = self.getfuncargvalue(argname)
|
|
|
|
def cached_setup(self, setup, teardown=None, scope="module", extrakey=None):
|
|
""" (deprecated) Return a testing resource managed by ``setup`` &
|
|
``teardown`` calls. ``scope`` and ``extrakey`` determine when the
|
|
``teardown`` function will be called so that subsequent calls to
|
|
``setup`` would recreate the resource. With pytest-2.3 you often
|
|
do not need ``cached_setup()`` as you can directly declare a scope
|
|
on a fixture function and register a finalizer through
|
|
``request.addfinalizer()``.
|
|
|
|
:arg teardown: function receiving a previously setup resource.
|
|
:arg setup: a no-argument function creating a resource.
|
|
:arg scope: a string value out of ``function``, ``class``, ``module``
|
|
or ``session`` indicating the caching lifecycle of the resource.
|
|
:arg extrakey: added to internal caching key of (funcargname, scope).
|
|
"""
|
|
if not hasattr(self.config, '_setupcache'):
|
|
self.config._setupcache = {} # XXX weakref?
|
|
cachekey = (self.fixturename, self._getscopeitem(scope), extrakey)
|
|
cache = self.config._setupcache
|
|
try:
|
|
val = cache[cachekey]
|
|
except KeyError:
|
|
self._check_scope(self.fixturename, self.scope, scope)
|
|
val = setup()
|
|
cache[cachekey] = val
|
|
if teardown is not None:
|
|
def finalizer():
|
|
del cache[cachekey]
|
|
teardown(val)
|
|
self._addfinalizer(finalizer, scope=scope)
|
|
return val
|
|
|
|
def getfuncargvalue(self, argname):
|
|
""" Dynamically retrieve a named fixture function argument.
|
|
|
|
As of pytest-2.3, it is easier and usually better to access other
|
|
fixture values by stating it as an input argument in the fixture
|
|
function. If you only can decide about using another fixture at test
|
|
setup time, you may use this function to retrieve it inside a fixture
|
|
function body.
|
|
"""
|
|
return self._get_active_fixturedef(argname).cached_result[0]
|
|
|
|
def _get_active_fixturedef(self, argname):
|
|
try:
|
|
return self._fixturedefs[argname]
|
|
except KeyError:
|
|
try:
|
|
fixturedef = self._getnextfixturedef(argname)
|
|
except FixtureLookupError:
|
|
if argname == "request":
|
|
class PseudoFixtureDef:
|
|
cached_result = (self, [0], None)
|
|
scope = "function"
|
|
return PseudoFixtureDef
|
|
raise
|
|
# remove indent to prevent the python3 exception
|
|
# from leaking into the call
|
|
result = self._getfuncargvalue(fixturedef)
|
|
self._funcargs[argname] = result
|
|
self._fixturedefs[argname] = fixturedef
|
|
return fixturedef
|
|
|
|
def _get_fixturestack(self):
|
|
current = self
|
|
l = []
|
|
while 1:
|
|
fixturedef = getattr(current, "_fixturedef", None)
|
|
if fixturedef is None:
|
|
l.reverse()
|
|
return l
|
|
l.append(fixturedef)
|
|
current = current._parent_request
|
|
|
|
def _getfuncargvalue(self, fixturedef):
|
|
# prepare a subrequest object before calling fixture function
|
|
# (latter managed by fixturedef)
|
|
argname = fixturedef.argname
|
|
funcitem = self._pyfuncitem
|
|
scope = fixturedef.scope
|
|
try:
|
|
param = funcitem.callspec.getparam(argname)
|
|
except (AttributeError, ValueError):
|
|
param = NOTSET
|
|
param_index = 0
|
|
else:
|
|
# indices might not be set if old-style metafunc.addcall() was used
|
|
param_index = funcitem.callspec.indices.get(argname, 0)
|
|
# if a parametrize invocation set a scope it will override
|
|
# the static scope defined with the fixture function
|
|
paramscopenum = funcitem.callspec._arg2scopenum.get(argname)
|
|
if paramscopenum is not None:
|
|
scope = scopes[paramscopenum]
|
|
|
|
subrequest = SubRequest(self, scope, param, param_index, fixturedef)
|
|
|
|
# check if a higher-level scoped fixture accesses a lower level one
|
|
subrequest._check_scope(argname, self.scope, scope)
|
|
|
|
# clear sys.exc_info before invoking the fixture (python bug?)
|
|
# if its not explicitly cleared it will leak into the call
|
|
exc_clear()
|
|
try:
|
|
# call the fixture function
|
|
val = fixturedef.execute(request=subrequest)
|
|
finally:
|
|
# if fixture function failed it might have registered finalizers
|
|
self.session._setupstate.addfinalizer(fixturedef.finish,
|
|
subrequest.node)
|
|
return val
|
|
|
|
def _check_scope(self, argname, invoking_scope, requested_scope):
|
|
if argname == "request":
|
|
return
|
|
if scopemismatch(invoking_scope, requested_scope):
|
|
# try to report something helpful
|
|
lines = self._factorytraceback()
|
|
pytest.fail("ScopeMismatch: You tried to access the %r scoped "
|
|
"fixture %r with a %r scoped request object, "
|
|
"involved factories\n%s" %(
|
|
(requested_scope, argname, invoking_scope, "\n".join(lines))),
|
|
pytrace=False)
|
|
|
|
def _factorytraceback(self):
|
|
lines = []
|
|
for fixturedef in self._get_fixturestack():
|
|
factory = fixturedef.func
|
|
fs, lineno = getfslineno(factory)
|
|
p = self._pyfuncitem.session.fspath.bestrelpath(fs)
|
|
args = _format_args(factory)
|
|
lines.append("%s:%d: def %s%s" %(
|
|
p, lineno, factory.__name__, args))
|
|
return lines
|
|
|
|
def _getscopeitem(self, scope):
|
|
if scope == "function":
|
|
# this might also be a non-function Item despite its attribute name
|
|
return self._pyfuncitem
|
|
node = get_scope_node(self._pyfuncitem, scope)
|
|
if node is None and scope == "class":
|
|
# fallback to function item itself
|
|
node = self._pyfuncitem
|
|
assert node
|
|
return node
|
|
|
|
def __repr__(self):
|
|
return "<FixtureRequest for %r>" %(self.node)
|
|
|
|
|
|
class SubRequest(FixtureRequest):
|
|
""" a sub request for handling getting a fixture from a
|
|
test function/fixture. """
|
|
def __init__(self, request, scope, param, param_index, fixturedef):
|
|
self._parent_request = request
|
|
self.fixturename = fixturedef.argname
|
|
if param is not NOTSET:
|
|
self.param = param
|
|
self.param_index = param_index
|
|
self.scope = scope
|
|
self._fixturedef = fixturedef
|
|
self.addfinalizer = fixturedef.addfinalizer
|
|
self._pyfuncitem = request._pyfuncitem
|
|
self._funcargs = request._funcargs
|
|
self._fixturedefs = request._fixturedefs
|
|
self._arg2fixturedefs = request._arg2fixturedefs
|
|
self._arg2index = request._arg2index
|
|
self.fixturenames = request.fixturenames
|
|
self._fixturemanager = request._fixturemanager
|
|
|
|
def __repr__(self):
|
|
return "<SubRequest %r for %r>" % (self.fixturename, self._pyfuncitem)
|
|
|
|
|
|
class ScopeMismatchError(Exception):
|
|
""" A fixture function tries to use a different fixture function which
|
|
which has a lower scope (e.g. a Session one calls a function one)
|
|
"""
|
|
|
|
scopes = "session module class function".split()
|
|
scopenum_function = scopes.index("function")
|
|
def scopemismatch(currentscope, newscope):
|
|
return scopes.index(newscope) > scopes.index(currentscope)
|
|
|
|
|
|
class FixtureLookupError(LookupError):
|
|
""" could not return a requested Fixture (missing or invalid). """
|
|
def __init__(self, argname, request, msg=None):
|
|
self.argname = argname
|
|
self.request = request
|
|
self.fixturestack = request._get_fixturestack()
|
|
self.msg = msg
|
|
|
|
def formatrepr(self):
|
|
tblines = []
|
|
addline = tblines.append
|
|
stack = [self.request._pyfuncitem.obj]
|
|
stack.extend(map(lambda x: x.func, self.fixturestack))
|
|
msg = self.msg
|
|
if msg is not None:
|
|
stack = stack[:-1] # the last fixture raise an error, let's present
|
|
# it at the requesting side
|
|
for function in stack:
|
|
fspath, lineno = getfslineno(function)
|
|
try:
|
|
lines, _ = inspect.getsourcelines(get_real_func(function))
|
|
except IOError:
|
|
error_msg = "file %s, line %s: source code not available"
|
|
addline(error_msg % (fspath, lineno+1))
|
|
else:
|
|
addline("file %s, line %s" % (fspath, lineno+1))
|
|
for i, line in enumerate(lines):
|
|
line = line.rstrip()
|
|
addline(" " + line)
|
|
if line.lstrip().startswith('def'):
|
|
break
|
|
|
|
if msg is None:
|
|
fm = self.request._fixturemanager
|
|
available = []
|
|
for name, fixturedef in fm._arg2fixturedefs.items():
|
|
parentid = self.request._pyfuncitem.parent.nodeid
|
|
faclist = list(fm._matchfactories(fixturedef, parentid))
|
|
if faclist:
|
|
available.append(name)
|
|
msg = "fixture %r not found" % (self.argname,)
|
|
msg += "\n available fixtures: %s" %(", ".join(available),)
|
|
msg += "\n use 'py.test --fixtures [testpath]' for help on them."
|
|
|
|
return FixtureLookupErrorRepr(fspath, lineno, tblines, msg, self.argname)
|
|
|
|
class FixtureLookupErrorRepr(TerminalRepr):
|
|
def __init__(self, filename, firstlineno, tblines, errorstring, argname):
|
|
self.tblines = tblines
|
|
self.errorstring = errorstring
|
|
self.filename = filename
|
|
self.firstlineno = firstlineno
|
|
self.argname = argname
|
|
|
|
def toterminal(self, tw):
|
|
#tw.line("FixtureLookupError: %s" %(self.argname), red=True)
|
|
for tbline in self.tblines:
|
|
tw.line(tbline.rstrip())
|
|
for line in self.errorstring.split("\n"):
|
|
tw.line(" " + line.strip(), red=True)
|
|
tw.line()
|
|
tw.line("%s:%d" % (self.filename, self.firstlineno+1))
|
|
|
|
class FixtureManager:
|
|
"""
|
|
pytest fixtures definitions and information is stored and managed
|
|
from this class.
|
|
|
|
During collection fm.parsefactories() is called multiple times to parse
|
|
fixture function definitions into FixtureDef objects and internal
|
|
data structures.
|
|
|
|
During collection of test functions, metafunc-mechanics instantiate
|
|
a FuncFixtureInfo object which is cached per node/func-name.
|
|
This FuncFixtureInfo object is later retrieved by Function nodes
|
|
which themselves offer a fixturenames attribute.
|
|
|
|
The FuncFixtureInfo object holds information about fixtures and FixtureDefs
|
|
relevant for a particular function. An initial list of fixtures is
|
|
assembled like this:
|
|
|
|
- ini-defined usefixtures
|
|
- autouse-marked fixtures along the collection chain up from the function
|
|
- usefixtures markers at module/class/function level
|
|
- test function funcargs
|
|
|
|
Subsequently the funcfixtureinfo.fixturenames attribute is computed
|
|
as the closure of the fixtures needed to setup the initial fixtures,
|
|
i. e. fixtures needed by fixture functions themselves are appended
|
|
to the fixturenames list.
|
|
|
|
Upon the test-setup phases all fixturenames are instantiated, retrieved
|
|
by a lookup of their FuncFixtureInfo.
|
|
"""
|
|
|
|
_argprefix = "pytest_funcarg__"
|
|
FixtureLookupError = FixtureLookupError
|
|
FixtureLookupErrorRepr = FixtureLookupErrorRepr
|
|
|
|
def __init__(self, session):
|
|
self.session = session
|
|
self.config = session.config
|
|
self._arg2fixturedefs = {}
|
|
self._holderobjseen = set()
|
|
self._arg2finish = {}
|
|
self._nodeid_and_autousenames = [("", self.config.getini("usefixtures"))]
|
|
session.config.pluginmanager.register(self, "funcmanage")
|
|
|
|
|
|
def getfixtureinfo(self, node, func, cls, funcargs=True):
|
|
if funcargs and not hasattr(node, "nofuncargs"):
|
|
if cls is not None:
|
|
startindex = 1
|
|
else:
|
|
startindex = None
|
|
argnames = getfuncargnames(func, startindex)
|
|
else:
|
|
argnames = ()
|
|
usefixtures = getattr(func, "usefixtures", None)
|
|
initialnames = argnames
|
|
if usefixtures is not None:
|
|
initialnames = usefixtures.args + initialnames
|
|
fm = node.session._fixturemanager
|
|
names_closure, arg2fixturedefs = fm.getfixtureclosure(initialnames,
|
|
node)
|
|
return FuncFixtureInfo(argnames, names_closure, arg2fixturedefs)
|
|
|
|
def pytest_plugin_registered(self, plugin):
|
|
nodeid = None
|
|
try:
|
|
p = py.path.local(plugin.__file__)
|
|
except AttributeError:
|
|
pass
|
|
else:
|
|
# construct the base nodeid which is later used to check
|
|
# what fixtures are visible for particular tests (as denoted
|
|
# by their test id)
|
|
if p.basename.startswith("conftest.py"):
|
|
nodeid = p.dirpath().relto(self.config.rootdir)
|
|
if p.sep != "/":
|
|
nodeid = nodeid.replace(p.sep, "/")
|
|
self.parsefactories(plugin, nodeid)
|
|
|
|
def _getautousenames(self, nodeid):
|
|
""" return a tuple of fixture names to be used. """
|
|
autousenames = []
|
|
for baseid, basenames in self._nodeid_and_autousenames:
|
|
if nodeid.startswith(baseid):
|
|
if baseid:
|
|
i = len(baseid)
|
|
nextchar = nodeid[i:i+1]
|
|
if nextchar and nextchar not in ":/":
|
|
continue
|
|
autousenames.extend(basenames)
|
|
# make sure autousenames are sorted by scope, scopenum 0 is session
|
|
autousenames.sort(
|
|
key=lambda x: self._arg2fixturedefs[x][-1].scopenum)
|
|
return autousenames
|
|
|
|
def getfixtureclosure(self, fixturenames, parentnode):
|
|
# collect the closure of all fixtures , starting with the given
|
|
# fixturenames as the initial set. As we have to visit all
|
|
# factory definitions anyway, we also return a arg2fixturedefs
|
|
# mapping so that the caller can reuse it and does not have
|
|
# to re-discover fixturedefs again for each fixturename
|
|
# (discovering matching fixtures for a given name/node is expensive)
|
|
|
|
parentid = parentnode.nodeid
|
|
fixturenames_closure = self._getautousenames(parentid)
|
|
def merge(otherlist):
|
|
for arg in otherlist:
|
|
if arg not in fixturenames_closure:
|
|
fixturenames_closure.append(arg)
|
|
merge(fixturenames)
|
|
arg2fixturedefs = {}
|
|
lastlen = -1
|
|
while lastlen != len(fixturenames_closure):
|
|
lastlen = len(fixturenames_closure)
|
|
for argname in fixturenames_closure:
|
|
if argname in arg2fixturedefs:
|
|
continue
|
|
fixturedefs = self.getfixturedefs(argname, parentid)
|
|
if fixturedefs:
|
|
arg2fixturedefs[argname] = fixturedefs
|
|
merge(fixturedefs[-1].argnames)
|
|
return fixturenames_closure, arg2fixturedefs
|
|
|
|
def pytest_generate_tests(self, metafunc):
|
|
for argname in metafunc.fixturenames:
|
|
faclist = metafunc._arg2fixturedefs.get(argname)
|
|
if faclist:
|
|
fixturedef = faclist[-1]
|
|
if fixturedef.params is not None:
|
|
func_params = getattr(getattr(metafunc.function, 'parametrize', None), 'args', [[None]])
|
|
# skip directly parametrized arguments
|
|
argnames = func_params[0]
|
|
if not isinstance(argnames, (tuple, list)):
|
|
argnames = [x.strip() for x in argnames.split(",") if x.strip()]
|
|
if argname not in func_params and argname not in argnames:
|
|
metafunc.parametrize(argname, fixturedef.params,
|
|
indirect=True, scope=fixturedef.scope,
|
|
ids=fixturedef.ids)
|
|
else:
|
|
continue # will raise FixtureLookupError at setup time
|
|
|
|
def pytest_collection_modifyitems(self, items):
|
|
# separate parametrized setups
|
|
items[:] = reorder_items(items)
|
|
|
|
def parsefactories(self, node_or_obj, nodeid=NOTSET, unittest=False):
|
|
if nodeid is not NOTSET:
|
|
holderobj = node_or_obj
|
|
else:
|
|
holderobj = node_or_obj.obj
|
|
nodeid = node_or_obj.nodeid
|
|
if holderobj in self._holderobjseen:
|
|
return
|
|
self._holderobjseen.add(holderobj)
|
|
autousenames = []
|
|
for name in dir(holderobj):
|
|
obj = getattr(holderobj, name, None)
|
|
# fixture functions have a pytest_funcarg__ prefix (pre-2.3 style)
|
|
# or are "@pytest.fixture" marked
|
|
marker = getfixturemarker(obj)
|
|
if marker is None:
|
|
if not name.startswith(self._argprefix):
|
|
continue
|
|
if not callable(obj):
|
|
continue
|
|
marker = defaultfuncargprefixmarker
|
|
name = name[len(self._argprefix):]
|
|
elif not isinstance(marker, FixtureFunctionMarker):
|
|
# magic globals with __getattr__ might have got us a wrong
|
|
# fixture attribute
|
|
continue
|
|
else:
|
|
assert not name.startswith(self._argprefix)
|
|
fixturedef = FixtureDef(self, nodeid, name, obj,
|
|
marker.scope, marker.params,
|
|
yieldctx=marker.yieldctx,
|
|
unittest=unittest, ids=marker.ids)
|
|
faclist = self._arg2fixturedefs.setdefault(name, [])
|
|
if fixturedef.has_location:
|
|
faclist.append(fixturedef)
|
|
else:
|
|
# fixturedefs with no location are at the front
|
|
# so this inserts the current fixturedef after the
|
|
# existing fixturedefs from external plugins but
|
|
# before the fixturedefs provided in conftests.
|
|
i = len([f for f in faclist if not f.has_location])
|
|
faclist.insert(i, fixturedef)
|
|
if marker.autouse:
|
|
autousenames.append(name)
|
|
if autousenames:
|
|
self._nodeid_and_autousenames.append((nodeid or '', autousenames))
|
|
|
|
def getfixturedefs(self, argname, nodeid):
|
|
try:
|
|
fixturedefs = self._arg2fixturedefs[argname]
|
|
except KeyError:
|
|
return None
|
|
else:
|
|
return tuple(self._matchfactories(fixturedefs, nodeid))
|
|
|
|
def _matchfactories(self, fixturedefs, nodeid):
|
|
for fixturedef in fixturedefs:
|
|
if nodeid.startswith(fixturedef.baseid):
|
|
yield fixturedef
|
|
|
|
|
|
def fail_fixturefunc(fixturefunc, msg):
|
|
fs, lineno = getfslineno(fixturefunc)
|
|
location = "%s:%s" % (fs, lineno+1)
|
|
source = py.code.Source(fixturefunc)
|
|
pytest.fail(msg + ":\n\n" + str(source.indent()) + "\n" + location,
|
|
pytrace=False)
|
|
|
|
def call_fixture_func(fixturefunc, request, kwargs, yieldctx):
|
|
if yieldctx:
|
|
if not is_generator(fixturefunc):
|
|
fail_fixturefunc(fixturefunc,
|
|
msg="yield_fixture requires yield statement in function")
|
|
iter = fixturefunc(**kwargs)
|
|
next = getattr(iter, "__next__", None)
|
|
if next is None:
|
|
next = getattr(iter, "next")
|
|
res = next()
|
|
def teardown():
|
|
try:
|
|
next()
|
|
except StopIteration:
|
|
pass
|
|
else:
|
|
fail_fixturefunc(fixturefunc,
|
|
"yield_fixture function has more than one 'yield'")
|
|
request.addfinalizer(teardown)
|
|
else:
|
|
if is_generator(fixturefunc):
|
|
fail_fixturefunc(fixturefunc,
|
|
msg="pytest.fixture functions cannot use ``yield``. "
|
|
"Instead write and return an inner function/generator "
|
|
"and let the consumer call and iterate over it.")
|
|
res = fixturefunc(**kwargs)
|
|
return res
|
|
|
|
class FixtureDef:
|
|
""" A container for a factory definition. """
|
|
def __init__(self, fixturemanager, baseid, argname, func, scope, params,
|
|
yieldctx, unittest=False, ids=None):
|
|
self._fixturemanager = fixturemanager
|
|
self.baseid = baseid or ''
|
|
self.has_location = baseid is not None
|
|
self.func = func
|
|
self.argname = argname
|
|
self.scope = scope
|
|
self.scopenum = scopes.index(scope or "function")
|
|
self.params = params
|
|
startindex = unittest and 1 or None
|
|
self.argnames = getfuncargnames(func, startindex=startindex)
|
|
self.yieldctx = yieldctx
|
|
self.unittest = unittest
|
|
self.ids = ids
|
|
self._finalizer = []
|
|
|
|
def addfinalizer(self, finalizer):
|
|
self._finalizer.append(finalizer)
|
|
|
|
def finish(self):
|
|
try:
|
|
while self._finalizer:
|
|
func = self._finalizer.pop()
|
|
func()
|
|
finally:
|
|
# even if finalization fails, we invalidate
|
|
# the cached fixture value
|
|
if hasattr(self, "cached_result"):
|
|
del self.cached_result
|
|
|
|
def execute(self, request):
|
|
# get required arguments and register our own finish()
|
|
# with their finalization
|
|
kwargs = {}
|
|
for argname in self.argnames:
|
|
fixturedef = request._get_active_fixturedef(argname)
|
|
result, arg_cache_key, exc = fixturedef.cached_result
|
|
request._check_scope(argname, request.scope, fixturedef.scope)
|
|
kwargs[argname] = result
|
|
if argname != "request":
|
|
fixturedef.addfinalizer(self.finish)
|
|
|
|
my_cache_key = request.param_index
|
|
cached_result = getattr(self, "cached_result", None)
|
|
if cached_result is not None:
|
|
result, cache_key, err = cached_result
|
|
if my_cache_key == cache_key:
|
|
if err is not None:
|
|
py.builtin._reraise(*err)
|
|
else:
|
|
return result
|
|
# we have a previous but differently parametrized fixture instance
|
|
# so we need to tear it down before creating a new one
|
|
self.finish()
|
|
assert not hasattr(self, "cached_result")
|
|
|
|
fixturefunc = self.func
|
|
|
|
if self.unittest:
|
|
if request.instance is not None:
|
|
# bind the unbound method to the TestCase instance
|
|
fixturefunc = self.func.__get__(request.instance)
|
|
else:
|
|
# the fixture function needs to be bound to the actual
|
|
# request.instance so that code working with "self" behaves
|
|
# as expected.
|
|
if request.instance is not None:
|
|
fixturefunc = getimfunc(self.func)
|
|
if fixturefunc != self.func:
|
|
fixturefunc = fixturefunc.__get__(request.instance)
|
|
|
|
try:
|
|
result = call_fixture_func(fixturefunc, request, kwargs,
|
|
self.yieldctx)
|
|
except Exception:
|
|
self.cached_result = (None, my_cache_key, sys.exc_info())
|
|
raise
|
|
self.cached_result = (result, my_cache_key, None)
|
|
return result
|
|
|
|
def __repr__(self):
|
|
return ("<FixtureDef name=%r scope=%r baseid=%r >" %
|
|
(self.argname, self.scope, self.baseid))
|
|
|
|
def num_mock_patch_args(function):
|
|
""" return number of arguments used up by mock arguments (if any) """
|
|
patchings = getattr(function, "patchings", None)
|
|
if not patchings:
|
|
return 0
|
|
mock = sys.modules.get("mock", sys.modules.get("unittest.mock", None))
|
|
if mock is not None:
|
|
return len([p for p in patchings
|
|
if not p.attribute_name and p.new is mock.DEFAULT])
|
|
return len(patchings)
|
|
|
|
|
|
def getfuncargnames(function, startindex=None):
|
|
# XXX merge with main.py's varnames
|
|
#assert not isclass(function)
|
|
realfunction = function
|
|
while hasattr(realfunction, "__wrapped__"):
|
|
realfunction = realfunction.__wrapped__
|
|
if startindex is None:
|
|
startindex = inspect.ismethod(function) and 1 or 0
|
|
if realfunction != function:
|
|
startindex += num_mock_patch_args(function)
|
|
function = realfunction
|
|
if isinstance(function, functools.partial):
|
|
argnames = inspect.getargs(py.code.getrawcode(function.func))[0]
|
|
partial = function
|
|
argnames = argnames[len(partial.args):]
|
|
if partial.keywords:
|
|
for kw in partial.keywords:
|
|
argnames.remove(kw)
|
|
else:
|
|
argnames = inspect.getargs(py.code.getrawcode(function))[0]
|
|
defaults = getattr(function, 'func_defaults',
|
|
getattr(function, '__defaults__', None)) or ()
|
|
numdefaults = len(defaults)
|
|
if numdefaults:
|
|
return tuple(argnames[startindex:-numdefaults])
|
|
return tuple(argnames[startindex:])
|
|
|
|
# algorithm for sorting on a per-parametrized resource setup basis
|
|
# it is called for scopenum==0 (session) first and performs sorting
|
|
# down to the lower scopes such as to minimize number of "high scope"
|
|
# setups and teardowns
|
|
|
|
def reorder_items(items):
|
|
argkeys_cache = {}
|
|
for scopenum in range(0, scopenum_function):
|
|
argkeys_cache[scopenum] = d = {}
|
|
for item in items:
|
|
keys = set(get_parametrized_fixture_keys(item, scopenum))
|
|
if keys:
|
|
d[item] = keys
|
|
return reorder_items_atscope(items, set(), argkeys_cache, 0)
|
|
|
|
def reorder_items_atscope(items, ignore, argkeys_cache, scopenum):
|
|
if scopenum >= scopenum_function or len(items) < 3:
|
|
return items
|
|
items_done = []
|
|
while 1:
|
|
items_before, items_same, items_other, newignore = \
|
|
slice_items(items, ignore, argkeys_cache[scopenum])
|
|
items_before = reorder_items_atscope(
|
|
items_before, ignore, argkeys_cache,scopenum+1)
|
|
if items_same is None:
|
|
# nothing to reorder in this scope
|
|
assert items_other is None
|
|
return items_done + items_before
|
|
items_done.extend(items_before)
|
|
items = items_same + items_other
|
|
ignore = newignore
|
|
|
|
|
|
def slice_items(items, ignore, scoped_argkeys_cache):
|
|
# we pick the first item which uses a fixture instance in the
|
|
# requested scope and which we haven't seen yet. We slice the input
|
|
# items list into a list of items_nomatch, items_same and
|
|
# items_other
|
|
if scoped_argkeys_cache: # do we need to do work at all?
|
|
it = iter(items)
|
|
# first find a slicing key
|
|
for i, item in enumerate(it):
|
|
argkeys = scoped_argkeys_cache.get(item)
|
|
if argkeys is not None:
|
|
argkeys = argkeys.difference(ignore)
|
|
if argkeys: # found a slicing key
|
|
slicing_argkey = argkeys.pop()
|
|
items_before = items[:i]
|
|
items_same = [item]
|
|
items_other = []
|
|
# now slice the remainder of the list
|
|
for item in it:
|
|
argkeys = scoped_argkeys_cache.get(item)
|
|
if argkeys and slicing_argkey in argkeys and \
|
|
slicing_argkey not in ignore:
|
|
items_same.append(item)
|
|
else:
|
|
items_other.append(item)
|
|
newignore = ignore.copy()
|
|
newignore.add(slicing_argkey)
|
|
return (items_before, items_same, items_other, newignore)
|
|
return items, None, None, None
|
|
|
|
def get_parametrized_fixture_keys(item, scopenum):
|
|
""" return list of keys for all parametrized arguments which match
|
|
the specified scope. """
|
|
assert scopenum < scopenum_function # function
|
|
try:
|
|
cs = item.callspec
|
|
except AttributeError:
|
|
pass
|
|
else:
|
|
# cs.indictes.items() is random order of argnames but
|
|
# then again different functions (items) can change order of
|
|
# arguments so it doesn't matter much probably
|
|
for argname, param_index in cs.indices.items():
|
|
if cs._arg2scopenum[argname] != scopenum:
|
|
continue
|
|
if scopenum == 0: # session
|
|
key = (argname, param_index)
|
|
elif scopenum == 1: # module
|
|
key = (argname, param_index, item.fspath)
|
|
elif scopenum == 2: # class
|
|
key = (argname, param_index, item.fspath, item.cls)
|
|
yield key
|
|
|
|
|
|
def xunitsetup(obj, name):
|
|
meth = getattr(obj, name, None)
|
|
if getfixturemarker(meth) is None:
|
|
return meth
|
|
|
|
def getfixturemarker(obj):
|
|
""" return fixturemarker or None if it doesn't exist or raised
|
|
exceptions."""
|
|
try:
|
|
return getattr(obj, "_pytestfixturefunction", None)
|
|
except KeyboardInterrupt:
|
|
raise
|
|
except Exception:
|
|
# some objects raise errors like request (from flask import request)
|
|
# we don't expect them to be fixture functions
|
|
return None
|
|
|
|
scopename2class = {
|
|
'class': Class,
|
|
'module': Module,
|
|
'function': pytest.Item,
|
|
}
|
|
def get_scope_node(node, scope):
|
|
cls = scopename2class.get(scope)
|
|
if cls is None:
|
|
if scope == "session":
|
|
return node.session
|
|
raise ValueError("unknown scope")
|
|
return node.getparent(cls)
|