Function test_pdb_can_be_rewritten

testing/acceptance_test.py:1214–1248

(pytester: Pytester)

def test_pdb_can_be_rewritten(pytester: Pytester) -> None:
    pytester.makepyfile(
        **{
            "conftest.py": """
                import pytest
                pytest.register_assert_rewrite("pdb")
                """,
            "__init__.py": "",
            "pdb.py": """
                def check():
                    assert 1 == 2
                """,
            "test_pdb.py": """
                def test():
                    import pdb
                    assert pdb.check()
                """,
        }
    )
    # Disable debugging plugin itself to avoid:
    # > INTERNALERROR> AttributeError: module 'pdb' has no attribute 'set_trace'
    result = pytester.runpytest_subprocess("-p", "no:debugging", "-vv")
    result.stdout.fnmatch_lines(
        [
            "    def check():",
            ">       assert 1 == 2",
            "E       assert 1 == 2",
            "E         +1",
            "E         -2",
            "",
            "pdb.py:2: AssertionError",
            "*= 1 failed in *",
        ]
    )
    assert result.ret == 1


def test_tee_stdio_captures_and_live_prints(pytester: Pytester) -> None: