Golden Update

Update golden output files after an intentional behavior change.

Required Input

Ask the user for:

1. •Scope — which tests to update:
   • •All failing tests
   • •Specific test pattern (e.g., ex1, ex1_first_deriv)
   • •Specific module (e.g., fd)

Steps

1. Build

cmake --build build

2. Identify failing tests

ctest --test-dir build -R "<pattern>" --output-on-failure 2>&1

Parse the output to find which tests failed. Each CTest name maps to a test suffix and executable:

• •CTest name tests_<module>_ex<N>_<suffix> → executable ex<N>, suffix <suffix>

3. Find args for each failing test

Read the /*TEST*/ block in the source file to find the args: for each failing suffix. The source file is at fluca/tests/<module>/ex<N>.c.

4. Recapture golden output

For each failing test, run the executable and capture stdout:

./build/fluca/tests/<module>/ex<N> <args> > fluca/tests/<module>/output/ex<N>_<suffix>.out

Before overwriting, show the diff between old and new output to the user for confirmation:

./build/fluca/tests/<module>/ex<N> <args> > /tmp/ex<N>_<suffix>.out
diff fluca/tests/<module>/output/ex<N>_<suffix>.out /tmp/ex<N>_<suffix>.out

Only overwrite after the user confirms the new output is correct.

5. Verify

ctest --test-dir build -R "<pattern>" --output-on-failure

All updated tests must pass.

Checklist

• • Changes are intentional (not a regression)
• • Diff reviewed and confirmed by user before overwriting
• • All updated tests pass after recapture
• • No unrelated tests broken