The assertIsNotNone method is a part of the unittest package/library in Python, which is used for writing and running unit tests. This method is used to test the existence or non-existence of a value or object. It checks if a given object is not None, and if so, the test passes. If the object is None, the test fails.
Code examples:
Example 1: Assume we have a function named "get_user_details" in a module named "my_module", which should return user details based on his/her user id, but if there's no user with that id, it should return None.
- If we want to test the functionality of this function with unittest, we can use assertIsNotNone method as follows:
from my_module import get_user_details import unittest
class TestGetUserDetails(unittest.TestCase): def test_valid_user_id(self): user_details = get_user_details(123) self.assertIsNotNone(user_details)
In this case, we simply create a test case to verify if a variable contains a value (other than None).
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