Function test_linematcher_no_matching

testing/test_pytester.py:549–594

(function: str)

@pytest.mark.parametrize("function", ["no_fnmatch_line", "no_re_match_line"])
def test_linematcher_no_matching(function: str) -> None:
    if function == "no_fnmatch_line":
        good_pattern = "*.py OK*"
        bad_pattern = "*X.py OK*"
    else:
        assert function == "no_re_match_line"
        good_pattern = r".*py OK"
        bad_pattern = r".*Xpy OK"

    lm = LineMatcher(
        [
            "cachedir: .pytest_cache",
            "collecting ... collected 1 item",
            "",
            "show_fixtures_per_test.py OK",
            "=== elapsed 1s ===",
        ]
    )

    # check the function twice to ensure we don't accumulate the internal buffer
    for i in range(2):
        with pytest.raises(pytest.fail.Exception) as e:
            func = getattr(lm, function)
            func(good_pattern)
        obtained = str(e.value).splitlines()
        if function == "no_fnmatch_line":
            assert obtained == [
                f"nomatch: '{good_pattern}'",
                "    and: 'cachedir: .pytest_cache'",
                "    and: 'collecting ... collected 1 item'",
                "    and: ''",
                f"fnmatch: '{good_pattern}'",
                "   with: 'show_fixtures_per_test.py OK'",
            ]
        else:
            assert obtained == [
                f" nomatch: '{good_pattern}'",
                "     and: 'cachedir: .pytest_cache'",
                "     and: 'collecting ... collected 1 item'",
                "     and: ''",
                f"re.match: '{good_pattern}'",
                "    with: 'show_fixtures_per_test.py OK'",
            ]

    func = getattr(lm, function)
    func(bad_pattern)  # bad pattern does not match any line: passes


def test_linematcher_no_matching_after_match() -> None: