coverage

name	coverage
description	Export source coverage of test
argument-hint	<test-name>
allowed-tools	["Bash(llvm-cov *)","Bash(CLANKER=1 ./contrib/test/single_test_cov.sh *)"]

Export source coverage of unit test $0:

1. Build: make -j CC=clang EXTRAS=llvm-cov BUILDDIR=clang-cov $0
2. Run: CLANKER=1 ./contrib/test/single_test_cov.sh build/clang-cov/unit-test/$0
   • produces default.profdata
3. Export
   • Per file: llvm-cov show --instr-profile default.profdata build/clang-cov/unit-test/$0 -sources <src/foo/bar.c> -show-instantiations=false
   • Per function: llvm-cov show --instr-profile default.profdata build/clang-cov/unit-test/$0 --name=<function_name>
   • All files overview (verbose!) llvm-cov report --instr-profile default.profdata build/clang-cov/unit-test/$0

If no further context/instructions are given, attempt to find under-covered areas of code: Skim the test code to understand what it's trying to test, then drill down the cov report to see if it actually covers that code.