How to Use cargo-tarpaulin for Code Coverage

Run cargo tarpaulin to execute your tests and generate a coverage report. This command runs the test suite, instruments the code, and outputs results to the target/tarpaulin-report.html file by default.

cargo tarpaulin --out Html

To integrate this into your CI pipeline, add a step to your .github/workflows/main.yml file that installs the tool and runs the command, similar to your existing cargo test steps.

cargo-tarpaulin is a tool that checks how much of your Rust code is actually tested. It runs your tests and highlights which lines of code were executed and which were missed. Think of it as a spotlight that shows you exactly where your safety net has holes.