Writing Effective Unit Tests. Daily Python quiz challenge #python #datascience #machinelearning

Mocks are essential for unit testing functions with multiple dependencies, as they allow you to isolate the function’s logic, ensuring tests are reliable and maintainable. By focusing on the function’s behavior rather than external dependencies, mocks make tests more predictable and reduce maintenance complexity. Integration tests, high-level output tests, and hardcoded data have limited applicability for isolated unit testing.