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The output of these tests is too complicated to comfortably verify by hand, but we can still use them to observe changes to the underlying mappings produced by codegen/LLVM. If these tests fail due to non-coverage changes (e.g. in HIR-to-MIR lowering or MIR optimizations), it should usually be OK to just `--bless` them, as long as the `run-coverage` test suite still works.
14 lines
603 B
Markdown
14 lines
603 B
Markdown
The tests in `./status-quo` were copied from `tests/run-coverage` in order to
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capture the current behavior of the instrumentor on non-trivial programs.
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The actual mappings have not been closely inspected.
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## Maintenance note
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These tests can be sensitive to small changes in MIR spans or MIR control flow,
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especially in HIR-to-MIR lowering or MIR optimizations.
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If you haven't touched the coverage code directly, and the `run-coverage` test
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suite still works, then it should usually be OK to just `--bless` these
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coverage mapping tests as necessary, without worrying too much about the exact
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changes.
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