141 lines
3.8 KiB
Python
141 lines
3.8 KiB
Python
import os, sys
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import py
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from py._plugin.pytest_monkeypatch import MonkeyPatch
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def test_setattr():
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class A:
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x = 1
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monkeypatch = MonkeyPatch()
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py.test.raises(AttributeError, "monkeypatch.setattr(A, 'notexists', 2)")
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monkeypatch.setattr(A, 'y', 2, raising=False)
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assert A.y == 2
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monkeypatch.undo()
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assert not hasattr(A, 'y')
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monkeypatch = MonkeyPatch()
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monkeypatch.setattr(A, 'x', 2)
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assert A.x == 2
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monkeypatch.setattr(A, 'x', 3)
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assert A.x == 3
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monkeypatch.undo()
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assert A.x == 1
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A.x = 5
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monkeypatch.undo() # double-undo makes no modification
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assert A.x == 5
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def test_delattr():
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class A:
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x = 1
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monkeypatch = MonkeyPatch()
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monkeypatch.delattr(A, 'x')
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assert not hasattr(A, 'x')
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monkeypatch.undo()
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assert A.x == 1
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monkeypatch = MonkeyPatch()
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monkeypatch.delattr(A, 'x')
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py.test.raises(AttributeError, "monkeypatch.delattr(A, 'y')")
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monkeypatch.delattr(A, 'y', raising=False)
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monkeypatch.setattr(A, 'x', 5, raising=False)
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assert A.x == 5
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monkeypatch.undo()
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assert A.x == 1
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def test_setitem():
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d = {'x': 1}
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monkeypatch = MonkeyPatch()
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monkeypatch.setitem(d, 'x', 2)
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monkeypatch.setitem(d, 'y', 1700)
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monkeypatch.setitem(d, 'y', 1700)
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assert d['x'] == 2
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assert d['y'] == 1700
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monkeypatch.setitem(d, 'x', 3)
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assert d['x'] == 3
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monkeypatch.undo()
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assert d['x'] == 1
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assert 'y' not in d
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d['x'] = 5
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monkeypatch.undo()
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assert d['x'] == 5
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def test_delitem():
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d = {'x': 1}
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monkeypatch = MonkeyPatch()
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monkeypatch.delitem(d, 'x')
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assert 'x' not in d
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monkeypatch.delitem(d, 'y', raising=False)
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py.test.raises(KeyError, "monkeypatch.delitem(d, 'y')")
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assert not d
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monkeypatch.setitem(d, 'y', 1700)
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assert d['y'] == 1700
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d['hello'] = 'world'
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monkeypatch.setitem(d, 'x', 1500)
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assert d['x'] == 1500
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monkeypatch.undo()
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assert d == {'hello': 'world', 'x': 1}
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def test_setenv():
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monkeypatch = MonkeyPatch()
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monkeypatch.setenv('XYZ123', 2)
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import os
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assert os.environ['XYZ123'] == "2"
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monkeypatch.undo()
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assert 'XYZ123' not in os.environ
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def test_delenv():
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name = 'xyz1234'
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assert name not in os.environ
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monkeypatch = MonkeyPatch()
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py.test.raises(KeyError, "monkeypatch.delenv(%r, raising=True)" % name)
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monkeypatch.delenv(name, raising=False)
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monkeypatch.undo()
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os.environ[name] = "1"
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try:
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monkeypatch = MonkeyPatch()
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monkeypatch.delenv(name)
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assert name not in os.environ
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monkeypatch.setenv(name, "3")
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assert os.environ[name] == "3"
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monkeypatch.undo()
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assert os.environ[name] == "1"
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finally:
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if name in os.environ:
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del os.environ[name]
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def test_setenv_prepend():
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import os
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monkeypatch = MonkeyPatch()
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monkeypatch.setenv('XYZ123', 2, prepend="-")
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assert os.environ['XYZ123'] == "2"
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monkeypatch.setenv('XYZ123', 3, prepend="-")
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assert os.environ['XYZ123'] == "3-2"
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monkeypatch.undo()
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assert 'XYZ123' not in os.environ
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def test_monkeypatch_plugin(testdir):
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reprec = testdir.inline_runsource("""
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pytest_plugins = 'pytest_monkeypatch',
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def test_method(monkeypatch):
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assert monkeypatch.__class__.__name__ == "MonkeyPatch"
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""")
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res = reprec.countoutcomes()
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assert tuple(res) == (1, 0, 0), res
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def test_syspath_prepend():
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old = list(sys.path)
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try:
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monkeypatch = MonkeyPatch()
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monkeypatch.syspath_prepend('world')
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monkeypatch.syspath_prepend('hello')
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assert sys.path[0] == "hello"
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assert sys.path[1] == "world"
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monkeypatch.undo()
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assert sys.path == old
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monkeypatch.undo()
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assert sys.path == old
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finally:
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sys.path[:] = old
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