cargo-tests

描述：在测试时生成 llvm-cov 报告 note: 需要 nightly

代码基于 https://doc.rust-lang.net.cn/nightly/unstable-book/compiler-flags/source-based-code-coverage.html

命令

 cargo tests <args>     run tests & generate cov report

 cargo tests all        runs clean && tests && report

 cargo tests clean      cleans up cov artifacts

 cargo tests report     open cov report

设置

为了使用此包，您必须设置以下内容

rustup default nightly rustup component add llvm-tools-preview