pytest-raises-without-exception (PT010)

Derived from the flake8-pytest-style linter.

What it does

Checks for pytest.raises calls without an expected exception.

pytest.raises expects to receive an expected exception as its first argument. If omitted, the pytest.raises call will fail at runtime.

import pytest


def test_foo():
    with pytest.raises():
        do_something()

Use instead:

import pytest


def test_foo():
    with pytest.raises(SomeException):
        do_something()