README

I'm learning Rust!

Code Coverage

Solution 1: grcov

Only work in nightly now.

Installing grcov

cargo install grcov

Testing

export CARGO_INCREMENTAL=0

# -Cpanic=abort doesn't work for dylib
export RUSTFLAGS="-Zprofile -Ccodegen-units=1 -Copt-level=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests"

export RUSTDOCFLAGS="-Cpanic=abort"

cargo +nightly test --all

grcov . -o ./target/debug/coverage/ -s . -t html --llvm --branch --ignore-not-existing --excl-start "#\[test\]" --excl-br-start "#\[test\]"

# -t html doesn't report branch parsing now, so we use lcov 
grcov . -o ./target/debug/lcov.info -s . -t lcov --llvm --branch --ignore-not-existing --ignore "$HOME/.cargo/*" --excl-start "#\[test\]"
genhtml -o ./target/debug/coverage/ --show-details --branch-coverage --highlight --ignore-errors source --legend ./target/debug/lcov.info

Solution 2: kcov

Doesn't work in Mac OS

Installing kcov

1. Dependencies

   brew install zlib bash cmake pkgconfig
   

2. pulling Kcov from Github

3. make and install

   cd /path/to/kcov/source/dir
   mkdir build
   cd build
   cmake \
     -DCMAKE_BUILD_TYPE=Release \
     -DCMAKE_INSTALL_PREFIX=/usr/local \
     ..
   make
   make install
   

4. Uninstall Kcov

   cd /path/to/kcov/source/dir
   cd build
   xargs rm < install_manifest.txt
   

Installing cargo-kcov

cargo install cargo-kcov