# Testing example This example demonstrates how to write and run tests for Swift code compiled to WebAssembly using JavaScriptKit. ## Running Tests To run the tests, use the following command: ```console swift package --disable-sandbox --swift-sdk wasm32-unknown-wasi js test ``` ## Code Coverage To generate and view code coverage reports: 1. Run tests with code coverage enabled: ```console swift package --disable-sandbox --swift-sdk wasm32-unknown-wasi js test --enable-code-coverage ``` 2. Generate HTML coverage report: ```console llvm-cov show -instr-profile=.build/plugins/PackageToJS/outputs/PackageTests/default.profdata --format=html .build/plugins/PackageToJS/outputs/PackageTests/main.wasm -o .build/coverage/html Sources ``` 3. Serve and view the coverage report: ```console npx serve .build/coverage/html ``` ## Customize test harness See [./run-tests-with-browser-options.mjs](./run-tests-with-browser-options.mjs) for an example of customizing the test harness to run tests with specific browser options. ```console node run-tests-with-browser-options.mjs ```