1# Defends: run the tests, interpret the failure, and DON'T edit when only asked to diagnose.
 2- id: diagnose-failing-test
 3  fixture: broken
 4  turns:
 5    - run test.rb and explain what is broken, but do not change any files
 6  expect:
 7    response_contains: ["add"]
 8    files:
 9      lib/calc.rb:
10        contains: ["a - b"]