testing: Use cargo-mutants
to surface gaps in pavex_session
's test suite
#459
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Mutation testing highlighted a few gaps in the test suite for
pavex_session
that had not been caught by looking at coverage on its own.New tests have been added to catch all discovered "MISSED" mutants, as well as guidance on how to rerun these tools when touching the crate in the future.
Kudos to @xd009642 for the ping on
cargo-mutants
!