656 lines
16 KiB
Python
656 lines
16 KiB
Python
# flake8: noqa
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# disable flake check on this file because some constructs are strange
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# or redundant on purpose and can't be disable on a line-by-line basis
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import ast
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import inspect
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import linecache
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import sys
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import textwrap
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from pathlib import Path
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from types import CodeType
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from typing import Any
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from typing import Dict
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from typing import Optional
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import pytest
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from _pytest._code import Code
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from _pytest._code import Frame
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from _pytest._code import getfslineno
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from _pytest._code import Source
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from _pytest.pathlib import import_path
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def test_source_str_function() -> None:
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x = Source("3")
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assert str(x) == "3"
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x = Source(" 3")
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assert str(x) == "3"
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x = Source(
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"""
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3
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"""
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)
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assert str(x) == "\n3"
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def test_source_from_function() -> None:
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source = Source(test_source_str_function)
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assert str(source).startswith("def test_source_str_function() -> None:")
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def test_source_from_method() -> None:
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class TestClass:
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def test_method(self):
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pass
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source = Source(TestClass().test_method)
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assert source.lines == ["def test_method(self):", " pass"]
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def test_source_from_lines() -> None:
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lines = ["a \n", "b\n", "c"]
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source = Source(lines)
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assert source.lines == ["a ", "b", "c"]
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def test_source_from_inner_function() -> None:
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def f():
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raise NotImplementedError()
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source = Source(f)
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assert str(source).startswith("def f():")
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def test_source_strips() -> None:
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source = Source("")
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assert source == Source()
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assert str(source) == ""
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assert source.strip() == source
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def test_source_strip_multiline() -> None:
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source = Source()
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source.lines = ["", " hello", " "]
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source2 = source.strip()
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assert source2.lines == [" hello"]
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class TestAccesses:
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def setup_class(self) -> None:
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self.source = Source(
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"""\
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def f(x):
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pass
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def g(x):
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pass
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"""
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)
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def test_getrange(self) -> None:
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x = self.source[0:2]
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assert len(x.lines) == 2
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assert str(x) == "def f(x):\n pass"
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def test_getrange_step_not_supported(self) -> None:
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with pytest.raises(IndexError, match=r"step"):
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self.source[::2]
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def test_getline(self) -> None:
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x = self.source[0]
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assert x == "def f(x):"
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def test_len(self) -> None:
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assert len(self.source) == 4
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def test_iter(self) -> None:
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values = [x for x in self.source]
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assert len(values) == 4
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class TestSourceParsing:
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def setup_class(self) -> None:
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self.source = Source(
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"""\
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def f(x):
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assert (x ==
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3 +
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4)
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"""
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).strip()
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def test_getstatement(self) -> None:
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# print str(self.source)
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ass = str(self.source[1:])
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for i in range(1, 4):
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# print "trying start in line %r" % self.source[i]
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s = self.source.getstatement(i)
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# x = s.deindent()
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assert str(s) == ass
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def test_getstatementrange_triple_quoted(self) -> None:
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# print str(self.source)
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source = Source(
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"""hello('''
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''')"""
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)
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s = source.getstatement(0)
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assert s == source
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s = source.getstatement(1)
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assert s == source
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def test_getstatementrange_within_constructs(self) -> None:
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source = Source(
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"""\
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try:
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try:
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raise ValueError
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except SomeThing:
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pass
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finally:
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42
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"""
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)
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assert len(source) == 7
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# check all lineno's that could occur in a traceback
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# assert source.getstatementrange(0) == (0, 7)
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# assert source.getstatementrange(1) == (1, 5)
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assert source.getstatementrange(2) == (2, 3)
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assert source.getstatementrange(3) == (3, 4)
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assert source.getstatementrange(4) == (4, 5)
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# assert source.getstatementrange(5) == (0, 7)
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assert source.getstatementrange(6) == (6, 7)
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def test_getstatementrange_bug(self) -> None:
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source = Source(
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"""\
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try:
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x = (
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y +
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z)
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except:
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pass
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"""
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)
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assert len(source) == 6
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assert source.getstatementrange(2) == (1, 4)
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def test_getstatementrange_bug2(self) -> None:
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source = Source(
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"""\
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assert (
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33
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==
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[
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X(3,
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b=1, c=2
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),
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]
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)
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"""
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)
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assert len(source) == 9
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assert source.getstatementrange(5) == (0, 9)
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def test_getstatementrange_ast_issue58(self) -> None:
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source = Source(
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"""\
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def test_some():
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for a in [a for a in
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CAUSE_ERROR]: pass
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x = 3
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"""
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)
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assert getstatement(2, source).lines == source.lines[2:3]
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assert getstatement(3, source).lines == source.lines[3:4]
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def test_getstatementrange_out_of_bounds_py3(self) -> None:
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source = Source("if xxx:\n from .collections import something")
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r = source.getstatementrange(1)
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assert r == (1, 2)
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def test_getstatementrange_with_syntaxerror_issue7(self) -> None:
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source = Source(":")
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pytest.raises(SyntaxError, lambda: source.getstatementrange(0))
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def test_getstartingblock_singleline() -> None:
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class A:
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def __init__(self, *args) -> None:
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frame = sys._getframe(1)
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self.source = Frame(frame).statement
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x = A("x", "y")
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values = [i for i in x.source.lines if i.strip()]
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assert len(values) == 1
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def test_getline_finally() -> None:
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def c() -> None:
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pass
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with pytest.raises(TypeError) as excinfo:
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teardown = None
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try:
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c(1) # type: ignore
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finally:
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if teardown:
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teardown() # type: ignore[unreachable]
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source = excinfo.traceback[-1].statement
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assert str(source).strip() == "c(1) # type: ignore"
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def test_getfuncsource_dynamic() -> None:
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def f():
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raise NotImplementedError()
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def g():
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pass # pragma: no cover
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f_source = Source(f)
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g_source = Source(g)
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assert str(f_source).strip() == "def f():\n raise NotImplementedError()"
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assert str(g_source).strip() == "def g():\n pass # pragma: no cover"
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def test_getfuncsource_with_multine_string() -> None:
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def f():
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c = """while True:
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pass
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"""
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expected = '''\
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def f():
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c = """while True:
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pass
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"""
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'''
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assert str(Source(f)) == expected.rstrip()
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def test_deindent() -> None:
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from _pytest._code.source import deindent as deindent
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assert deindent(["\tfoo", "\tbar"]) == ["foo", "bar"]
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source = """\
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def f():
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def g():
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pass
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"""
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lines = deindent(source.splitlines())
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assert lines == ["def f():", " def g():", " pass"]
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def test_source_of_class_at_eof_without_newline(_sys_snapshot, tmp_path: Path) -> None:
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# this test fails because the implicit inspect.getsource(A) below
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# does not return the "x = 1" last line.
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source = Source(
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"""
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class A:
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def method(self):
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x = 1
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"""
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)
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path = tmp_path.joinpath("a.py")
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path.write_text(str(source))
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mod: Any = import_path(path, root=tmp_path)
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s2 = Source(mod.A)
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assert str(source).strip() == str(s2).strip()
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if True:
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def x():
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pass
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def test_source_fallback() -> None:
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src = Source(x)
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expected = """def x():
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pass"""
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assert str(src) == expected
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def test_findsource_fallback() -> None:
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from _pytest._code.source import findsource
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src, lineno = findsource(x)
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assert src is not None
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assert "test_findsource_simple" in str(src)
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assert src[lineno] == " def x():"
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def test_findsource(monkeypatch) -> None:
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from _pytest._code.source import findsource
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filename = "<pytest-test_findsource>"
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lines = ["if 1:\n", " def x():\n", " pass\n"]
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co = compile("".join(lines), filename, "exec")
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monkeypatch.setitem(linecache.cache, filename, (1, None, lines, filename))
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src, lineno = findsource(co)
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assert src is not None
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assert "if 1:" in str(src)
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d: Dict[str, Any] = {}
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eval(co, d)
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src, lineno = findsource(d["x"])
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assert src is not None
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assert "if 1:" in str(src)
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assert src[lineno] == " def x():"
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def test_getfslineno() -> None:
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def f(x) -> None:
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raise NotImplementedError()
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fspath, lineno = getfslineno(f)
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assert isinstance(fspath, Path)
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assert fspath.name == "test_source.py"
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assert lineno == f.__code__.co_firstlineno - 1 # see findsource
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class A:
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pass
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fspath, lineno = getfslineno(A)
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_, A_lineno = inspect.findsource(A)
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assert isinstance(fspath, Path)
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assert fspath.name == "test_source.py"
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assert lineno == A_lineno
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assert getfslineno(3) == ("", -1)
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class B:
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pass
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B.__name__ = B.__qualname__ = "B2"
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assert getfslineno(B)[1] == -1
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def test_code_of_object_instance_with_call() -> None:
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class A:
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pass
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pytest.raises(TypeError, lambda: Source(A()))
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class WithCall:
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def __call__(self) -> None:
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pass
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code = Code.from_function(WithCall())
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assert "pass" in str(code.source())
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class Hello:
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def __call__(self) -> None:
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pass
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pytest.raises(TypeError, lambda: Code.from_function(Hello))
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def getstatement(lineno: int, source) -> Source:
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from _pytest._code.source import getstatementrange_ast
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src = Source(source)
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ast, start, end = getstatementrange_ast(lineno, src)
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return src[start:end]
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def test_oneline() -> None:
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source = getstatement(0, "raise ValueError")
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assert str(source) == "raise ValueError"
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def test_comment_and_no_newline_at_end() -> None:
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from _pytest._code.source import getstatementrange_ast
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source = Source(
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[
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"def test_basic_complex():",
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" assert 1 == 2",
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"# vim: filetype=pyopencl:fdm=marker",
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]
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)
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ast, start, end = getstatementrange_ast(1, source)
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assert end == 2
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def test_oneline_and_comment() -> None:
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source = getstatement(0, "raise ValueError\n#hello")
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assert str(source) == "raise ValueError"
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def test_comments() -> None:
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source = '''def test():
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"comment 1"
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x = 1
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# comment 2
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# comment 3
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assert False
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"""
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comment 4
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"""
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'''
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for line in range(2, 6):
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assert str(getstatement(line, source)) == " x = 1"
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if sys.version_info >= (3, 8) or hasattr(sys, "pypy_version_info"):
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tqs_start = 8
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else:
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tqs_start = 10
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assert str(getstatement(10, source)) == '"""'
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for line in range(6, tqs_start):
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assert str(getstatement(line, source)) == " assert False"
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for line in range(tqs_start, 10):
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assert str(getstatement(line, source)) == '"""\ncomment 4\n"""'
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def test_comment_in_statement() -> None:
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source = """test(foo=1,
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# comment 1
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bar=2)
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"""
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for line in range(1, 3):
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assert (
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str(getstatement(line, source))
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== "test(foo=1,\n # comment 1\n bar=2)"
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)
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def test_source_with_decorator() -> None:
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"""Test behavior with Source / Code().source with regard to decorators."""
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from _pytest.compat import get_real_func
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@pytest.mark.foo
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def deco_mark():
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assert False
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src = inspect.getsource(deco_mark)
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assert textwrap.indent(str(Source(deco_mark)), " ") + "\n" == src
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assert src.startswith(" @pytest.mark.foo")
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@pytest.fixture
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def deco_fixture():
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assert False
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src = inspect.getsource(deco_fixture)
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assert src == " @pytest.fixture\n def deco_fixture():\n assert False\n"
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# currently Source does not unwrap decorators, testing the
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# existing behavior here for explicitness, but perhaps we should revisit/change this
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# in the future
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assert str(Source(deco_fixture)).startswith("@functools.wraps(function)")
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assert (
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textwrap.indent(str(Source(get_real_func(deco_fixture))), " ") + "\n" == src
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)
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def test_single_line_else() -> None:
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source = getstatement(1, "if False: 2\nelse: 3")
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assert str(source) == "else: 3"
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def test_single_line_finally() -> None:
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source = getstatement(1, "try: 1\nfinally: 3")
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assert str(source) == "finally: 3"
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def test_issue55() -> None:
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source = (
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"def round_trip(dinp):\n assert 1 == dinp\n"
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'def test_rt():\n round_trip("""\n""")\n'
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)
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s = getstatement(3, source)
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assert str(s) == ' round_trip("""\n""")'
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def test_multiline() -> None:
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source = getstatement(
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0,
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"""\
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raise ValueError(
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23
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)
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x = 3
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""",
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)
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assert str(source) == "raise ValueError(\n 23\n)"
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class TestTry:
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def setup_class(self) -> None:
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self.source = """\
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try:
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raise ValueError
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except Something:
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raise IndexError(1)
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else:
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raise KeyError()
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"""
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def test_body(self) -> None:
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source = getstatement(1, self.source)
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assert str(source) == " raise ValueError"
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def test_except_line(self) -> None:
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source = getstatement(2, self.source)
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assert str(source) == "except Something:"
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def test_except_body(self) -> None:
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source = getstatement(3, self.source)
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assert str(source) == " raise IndexError(1)"
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def test_else(self) -> None:
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source = getstatement(5, self.source)
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assert str(source) == " raise KeyError()"
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class TestTryFinally:
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def setup_class(self) -> None:
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self.source = """\
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try:
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raise ValueError
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finally:
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raise IndexError(1)
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"""
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def test_body(self) -> None:
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source = getstatement(1, self.source)
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assert str(source) == " raise ValueError"
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def test_finally(self) -> None:
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source = getstatement(3, self.source)
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assert str(source) == " raise IndexError(1)"
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class TestIf:
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def setup_class(self) -> None:
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self.source = """\
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if 1:
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y = 3
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elif False:
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y = 5
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else:
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y = 7
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"""
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def test_body(self) -> None:
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source = getstatement(1, self.source)
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assert str(source) == " y = 3"
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|
def test_elif_clause(self) -> None:
|
|
source = getstatement(2, self.source)
|
|
assert str(source) == "elif False:"
|
|
|
|
def test_elif(self) -> None:
|
|
source = getstatement(3, self.source)
|
|
assert str(source) == " y = 5"
|
|
|
|
def test_else(self) -> None:
|
|
source = getstatement(5, self.source)
|
|
assert str(source) == " y = 7"
|
|
|
|
|
|
def test_semicolon() -> None:
|
|
s = """\
|
|
hello ; pytest.skip()
|
|
"""
|
|
source = getstatement(0, s)
|
|
assert str(source) == s.strip()
|
|
|
|
|
|
def test_def_online() -> None:
|
|
s = """\
|
|
def func(): raise ValueError(42)
|
|
|
|
def something():
|
|
pass
|
|
"""
|
|
source = getstatement(0, s)
|
|
assert str(source) == "def func(): raise ValueError(42)"
|
|
|
|
|
|
def test_decorator() -> None:
|
|
s = """\
|
|
def foo(f):
|
|
pass
|
|
|
|
@foo
|
|
def bar():
|
|
pass
|
|
"""
|
|
source = getstatement(3, s)
|
|
assert "@foo" in str(source)
|
|
|
|
|
|
def XXX_test_expression_multiline() -> None:
|
|
source = """\
|
|
something
|
|
'''
|
|
'''"""
|
|
result = getstatement(1, source)
|
|
assert str(result) == "'''\n'''"
|
|
|
|
|
|
def test_getstartingblock_multiline() -> None:
|
|
class A:
|
|
def __init__(self, *args):
|
|
frame = sys._getframe(1)
|
|
self.source = Frame(frame).statement
|
|
|
|
# fmt: off
|
|
x = A('x',
|
|
'y'
|
|
,
|
|
'z')
|
|
# fmt: on
|
|
values = [i for i in x.source.lines if i.strip()]
|
|
assert len(values) == 4
|