Harness testbench

Four everyday chores. Give each one to your harness, watch it work, and keep the chat log running. Each task leaves a file the grader checks.

1. Untangle the graph

Done in step 7: untangle/moves.json reaches zero crossings. Nothing to do here but confirm it, and note your score.

Check: python untangle/check.py untangle/graph.json untangle/moves.json prints "ok": true and your turns.

2. Port a program to another language

stats.py reads scores.csv and prints the class average and the top scorer.

Ask your harness to rewrite it in JavaScript as stats.js, then run both.

Check: node stats.js prints the same two lines as python stats.py.

3. Write the missing tests

utils.py has four functions. test_utils.py is empty.

Ask your harness to write one test per function and run them until all four pass. One function has a bug; the test for it can only pass once the function is fixed. Do not change a test to make it pass.

Check: python -m unittest test_utils shows Ran 4 tests and OK.

4. Test a program against its documentation

inventory.py is a small module with four functions: add, remove, quantity, total_value. Its docstring states the rules they follow. One function breaks a rule.

Ask your harness to write test_inventory.py that checks every function against the docstring, run it, and tell you which rule is broken.

Check: python test_inventory.py runs all four checks and names the broken rule.