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import inspect
import sys
import pytest
@pytest.mark.skipif(sys.version_info < (3, 10), reason="requires python3.10 or higher")
@pytest.mark.parametrize("filename", ["site-packages/foo.py", "dist-packages/bar.py"])
def test_3rd_party_traceback(pytester, monkeypatch, filename):
original_inspect_stack = inspect.stack
def inspect_stack_wrapper(context=1):
# call the original API and ignore this wrapper frame
frames = original_inspect_stack(context)[1:]
# insert a dummy frame pointing to 3rd party code before the failed check
# (the first 3 frames belong to pytest-check)
frames.insert(3, inspect.FrameInfo(frames[0].frame, filename, 0, "", None, None))
return frames
monkeypatch.setattr("inspect.stack", inspect_stack_wrapper)
pytester.copy_example("examples/test_example_helpers.py")
result = pytester.runpytest("--check-max-tb=2")
result.assert_outcomes(failed=1, passed=0)
result.stdout.no_fnmatch_line(f"{filename}*")
result.stdout.no_fnmatch_line("*in test_func() -> helper1()")
result.stdout.no_fnmatch_line("*in helper1() -> helper2()")
result.stdout.fnmatch_lines(
[
"*FAILURE: assert 1 == 0, first",
"*in helper2 -> assert 1 == 0",
"*AssertionError: assert 1 == 0",
"*FAILURE: assert 1 > 2, second",
"*in helper2 -> assert 1 > 2",
"*AssertionError: assert 1 > 2",
"*Failed Checks: 2*",
],
)
@pytest.mark.skipif(sys.version_info < (3, 10), reason="requires python3.10 or higher")
def test_normal_pseudo_traceback(pytester):
"""
Should show a sequence of calls
"""
pytester.copy_example("examples/test_example_helpers.py")
result = pytester.runpytest("--check-max-tb=2")
result.assert_outcomes(failed=1, passed=0)
result.stdout.fnmatch_lines(
[
"*FAILURE: assert 1 == 0, first",
"*in test_func() -> helper1()",
"*in helper1() -> helper2()",
"*in helper2 -> assert 1 == 0",
"*AssertionError: assert 1 == 0",
"*FAILURE: assert 1 > 2, second",
"*in test_func() -> helper1()",
"*in helper1() -> helper2()",
"*in helper2 -> assert 1 > 2",
"*AssertionError: assert 1 > 2",
"*Failed Checks: 2*",
],
)
@pytest.mark.skipif(sys.version_info < (3, 10), reason="requires python3.10 or higher")
def test_tracebackhide(pytester):
"""
Should skip helper1, since it has __tracebackhide__ = True
"""
pytester.copy_example("examples/test_example_tracebackhide.py")
result = pytester.runpytest("--check-max-tb=2")
result.assert_outcomes(failed=1, passed=0)
result.stdout.no_fnmatch_line("*in helper1() -> helper2()")
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