How to pytest_exception_interact to modify test results

[harupy]

Given the following tests, is it possible to use pytest_exception_interact (or any other hook) to catch BarErr and mark test_bar1 and test_bar2 as successful (or skipped)?

class FooErr(Exception):
    pass


class BarErr(Exception):
    pass


def test_foo():
    raise FooErr("foo")


def test_bar1():
    raise BarErr("bar1")


def test_bar2():
    raise BarErr("bar2")

[The-Compiler]

What's your goal/use-case for this?

I can't believe I'm saying this, but my pytest-vw plugin (a dumb joke) might serve for some, uh, inspiration.

[The-Compiler]

The usual way to do this is using an xfail mark, though you will need to apply that mark manually to all affected tests (you can however e.g. use pytestmark to mark all tests in a module that way).

As for your question, see what you can find in the TestReport you get in rep.

[harupy]

Thanks for the pointer. It looks like the error info is stored in longrepr:
https://docs.pytest.org/en/stable/reference/reference.html#pytest.TestReport.longrepr

[harupy]

https://docs.pytest.org/en/stable/reference/reference.html#pytest.CallInfo is also available in the hook?

[harupy]

This worked:

@pytest.hookimpl(hookwrapper=True)
def pytest_runtest_makereport(item: pytest.Item, call: pytest.CallInfo):
    outcome = yield
    rep = outcome.get_result()
    if (
        rep.failed
        and call.excinfo
        and isinstance(call.excinfo.value, NotImplementedError)
    ):
        rep.outcome = "passed"

[The-Compiler]

I can only recommend setting them to xfailed or maybe skipped and not just pretending that they passed.