All unit tests are run inside a Electron renderer environment which access to DOM and Nodejs api. This is the closest to the environment in which VS Code itself ships. Notes:
Unit tests from layers `common` and `browser` are run inside `chromium`, `webkit`, and (soon'ish) `firefox` (using playwright). This complements our electron-based unit test runner and adds more coverage of supported platforms. Notes:
- these tests are part of the continuous build, that means you might have test failures that only happen with webkit on _windows_ or _chromium_ on linux
- to debug, open `<vscode>/test/unit/browser/renderer.html` inside a browser and use the `?m=<amd_module>`-query to specify what AMD module to load, e.g `file:///Users/jrieken/Code/vscode/test/unit/browser/renderer.html?m=vs/base/test/common/strings.test` runs all tests from `strings.test.ts`
**Note**: you can enable verbose logging of playwright library by setting a `DEBUG` environment variable before running the tests (https://playwright.dev/docs/debug#verbose-api-logs)
