Test your knowledge: Python unittest

Review

1. Which method will the default unittest loader treat as a test method?

   TestCase methods are found by the `test` prefix, usually written as `test_...`.
2. A function should return the tuple (4, 9). Which assertion best expresses that contract?

   assertEqual is intended for comparing the actual result to the expected value and produces a direct failure report.
3. A call must raise `KeyError`. What should the test do?

   The assertRaises context passes only when the expected exception is raised within its block.
4. What is the main reason to create fresh per-test state in `setUp()`?

   Fresh fixture state limits hidden dependencies between tests.
5. A validation function should handle six related input/value pairs. Why might `subTest(value=value)` be useful?

   A subTest context reports its parameters for an individual failing case.
6. Which command discovers unittest tests from the current project directory with detailed output?

   `python -m unittest discover -v` runs standard discovery and gives verbose test output.