AIMentor — AI Expertise Learning Platform

14 questions · pass mark 80% · 20 minute limit. The timer auto-submits at zero.

Time remaining: 20:00

Question 1easy
How does a pytest test assert an expected value?
expect(x).toBe(y)A plain `assert x == y` statementself.assertEqual(x, y) is the only wayreturn x == y
Question 2easy
Why should you NOT assert on the exact text an LLM returns?
LLM output is non-deterministic; test the deterministic scaffolding insteadStrings can't be compared in Pythonpytest cannot handle stringsIt is always identical, so testing is pointless
Question 3medium
What does a pytest fixture do?
Runs a test in parallelProvides reusable setup/data that tests request by naming it as a parameterMocks the network automaticallyGenerates random inputs
Question 4medium
What is `@pytest.mark.parametrize` used for?
Running one test function against many input/expected rowsMarking a test as skippedSetting a timeoutMocking a dependency
Question 5medium
How do you assert that a call raises a ValueError in pytest?
assert raises ValueErrorwith pytest.raises(ValueError): ...call...try/except and pass@pytest.raises(ValueError)
Question 6hard
Why mock the LLM/HTTP call in tests?
To make tests slower but more realisticTo keep tests fast, free, and deterministic, and to test your own logic in isolationBecause real calls are forbidden in PythonTo increase code coverage of the vendor SDK
Question 7medium
What does pytest's `monkeypatch.setattr(assistant, 'call_llm', fake)` accomplish?
It deletes the call_llm function permanentlyIt replaces call_llm with `fake` for the duration of the testIt renames the moduleIt runs call_llm twice
Question 8medium
In a layered AI app, what belongs in the `domain/` layer?
FastAPI route handlersThe OpenAI HTTP clientPure logic (scoring, chunking, prompt assembly) with no framework/vendor importsDatabase connection setup
Question 9medium
What is the main testability benefit of putting the LLM client in an `adapters/` layer?
It makes the app fasterServices can be tested by mocking the adapter, with no real networkIt removes the need for type hintsIt encrypts requests
Question 10hard
Why use `?` placeholders in `conn.execute("INSERT INTO runs VALUES (?, ?)", (id, score))`?
They make the query run fasterThey safely separate values from SQL text, preventing SQL injectionThey are required for SELECT onlyThey convert values to strings
Question 11medium
What is mypy?
A test runner like pytestA static type checker for Python type hints (the `tsc` of Python)A web frameworkA mocking library
Question 12easy
Which Python functions convert between a dict and a JSON string?
json.parse / json.stringifyjson.dumps (dict→str) and json.loads (str→dict)json.encode / json.decodepickle.dumps / pickle.loads
Question 13medium
Name the Python test framework taught here (whose tests are `test_*` functions with plain asserts).
Question 14hard
One word: keeping domain logic free of framework/vendor imports so it can be tested and swapped is the principle of ____ (the app quality this promotes).

0 / 14 answered

Testing & Project Structure — Final Exam