Src file mapping not working properly with trybuild and proc-macro workspace member #140
Description
When running integration tests (via trybuild) for a proc-macro crate that is a workspace member, the following warning is output:
error: dep/dep/src/lib.rs: No such file or directory
warning: The file 'dep/dep/src/lib.rs' isn't covered.
cmd run:
cargo llvm-cov --workspace --html
The report ends up showing 2 entries for the same src file as seen below
You can find a small reproducible sample here: test.tar.gz
This seems to be happening even if trybuild::TestCases::new() is the only thing in the test fn (no calls to pass or compile_fail).
It also seems to work fine if the crate is a normal lib instead of a proc-macro lib.
I wasn't sure if this is an issue with cargo-llvm-cov or trybuild but having tried tarpaulin with success (same setup), I thought it might be an issue with cargo-llvm-cov.