Method match

src/_pytest/_code/code.py:776–793

Check whether the regular expression `regexp` matches the string representation of the exception using :func:`python:re.search`. If it matches `True` is returned, otherwise an `AssertionError` is raised.

(self, regexp: str | re.Pattern[str])

        return fmt.repr_excinfo(self)

    def match(self, regexp: str | re.Pattern[str]) -> Literal[True]:
        """Check whether the regular expression `regexp` matches the string
        representation of the exception using :func:`python:re.search`.

        If it matches `True` is returned, otherwise an `AssertionError` is raised.
        """
        __tracebackhide__ = True
        value = stringify_exception(self.value)
        msg = (
            f"Regex pattern did not match.\n"
            f"  Expected regex: {regexp!r}\n"
            f"  Actual message: {value!r}"
        )
        if regexp == value:
            msg += "\n Did you mean to `re.escape()` the regex?"
        assert re.search(regexp, value), msg
        # Return True to allow for "assert excinfo.match()".
        return True

    def _group_contains(
        self,