{"id":"some-solutions-combine-test-and-source","text":"Some solution files (e.g., `number-of-students-doing-homework-at-a-given-time/solution.py`, `number-of-valid-clock-times/solution.py`) include both the `Solution` class and a `unittest.TestCase` subclass in a single module, alongside a separate `test_solution.py`.","truth_value":"IN","source":"entries/2026/06/06/number-of-students-doing-homework-at-a-given-time-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"some-solutions-combine-test-and-source","truth_value":"IN","reason":"premise"}]}}