Pytest Testing Idioms

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External

Internal

Overview

Tested Code is Supposed to Throw Exception

import pytest

def test_something_that_should_throw_exception():
    with pytest.raises(Exception) as e_info:
        my_method()

If the tested code raises a more specific exception, you can use that instead:

def test_something_that_should_throw_exception():
    with pytest.raises(ValueException) as e_info:
        my_method()

  • How to I test the exception message?

Also see:

Python Language | Exceptions