defmt-test: #[cfg(test)]
the #[defmt_test::tests]
module
#604
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it recently came to my attention that one can use
defmt-test
for "unit testing" by using it insrc/lib.rs
(although this is pretty limited at the moment because one can only use thedefmt_test::tests
once in a library crate)if one does use
defmt_test
like that then they may run into the issue that running the test files intests
fails with this cryptic linker message:= note: rust-lld: error: duplicate symbol: main
the issue is that the code generated by
defmt_test::tests
(which includes a function with unmangled namemain
) is not conditionally compiled but we do want that to be#[cfg(test)]
-ed because it contains test code.r? @jonas-schievink