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Testing

Unit tests

npm run test

The focused suite covers:

  • the one-view manifest topology;
  • native shell selection and PTY creation;
  • input, output, resize, exit, and disposal;
  • the host/webview message contract;
  • one xterm.js instance and its configuration updates;
  • extension activation with exactly one WebviewViewProvider.

Type checking, lint, and production build

npx tsc -p tsconfig.json --noEmit
npm run compile:e2e
npm run lint
npm run package

VS Code E2E

npm run test:e2e

The test uses a real VS Code Extension Development Host. It subscribes to the PTY start and output events before opening the ULW sidebar, then sends a deterministic printf command and verifies the emitted output. It also asserts that exactly one PTY exists.

Manual check

  1. Run npm run compile.
  2. Press F5 in VS Code.
  3. Open the secondary sidebar and select ULW.
  4. Run printf 'ulw-ok\n'.
  5. Resize the sidebar and confirm the prompt continues to render across the full view.
  6. Close the Extension Development Host and confirm the shell process exits.