languages/rust
languages/rust
1
0
Fork 0
mirror of https://github.com/rust-lang/rust synced 2024-11-05 20:45:15 +00:00
Code Issues Projects Releases Packages Wiki Activity
rust/tests/coverage/README.md
Zalathar a573880373 coverage: Rename the run-coverage test mode to coverage-run 
This makes it more consistent with the `coverage-map` mode and the shared
`tests/coverage` test directory.
2023-11-08 16:41:24 +11:00

767 B
Raw Blame History

The tests in this directory are shared by two different test modes, and can be run in multiple different ways:

  • ./x.py test coverage-map (compiles to LLVM IR and checks coverage mappings)
  • ./x.py test coverage-run (runs a test binary and checks its coverage report)
  • ./x.py test coverage (runs both coverage-map and coverage-run)

Maintenance note

These tests can be sensitive to small changes in MIR spans or MIR control flow, especially in HIR-to-MIR lowering or MIR optimizations.

If you haven't touched the coverage code directly, and the tests still pass in coverage-run mode, then it should usually be OK to just re-bless the mappings as necessary with ./x.py test coverage-map --bless, without worrying too much about the exact changes.