Method __exit__

src/_pytest/raises.py:1398–1430

(
        self,
        exc_type: type[BaseException] | None,
        exc_val: BaseException | None,
        exc_tb: types.TracebackType | None,
    )

        return False

    def __exit__(
        self,
        exc_type: type[BaseException] | None,
        exc_val: BaseException | None,
        exc_tb: types.TracebackType | None,
    ) -> bool:
        __tracebackhide__ = True
        if exc_type is None:
            fail(f"DID NOT RAISE any exception, expected `{self.expected_type()}`")

        assert self.excinfo is not None, (
            "Internal error - should have been constructed in __enter__"
        )

        # group_str is the only thing that differs between RaisesExc and RaisesGroup...
        # I might just scrap it? Or make it part of fail_reason
        group_str = (
            "(group)"
            if self.allow_unwrapped and not issubclass(exc_type, BaseExceptionGroup)
            else "group"
        )

        if not self.matches(exc_val):
            fail(f"Raised exception {group_str} did not match: {self._fail_reason}")

        # Cast to narrow the exception type now that it's verified....
        # even though the TypeGuard in self.matches should be narrowing
        exc_info = cast(
            "tuple[type[BaseExceptionGroup[BaseExcT_co]], BaseExceptionGroup[BaseExcT_co], types.TracebackType]",
            (exc_type, exc_val, exc_tb),
        )
        self.excinfo.fill_unfilled(exc_info)
        return True

    def expected_type(self) -> str:
        subexcs = []