version: "1.0.0" name: uitest description: Write, update, run, or debug vscode-java-pack UI/E2E tests using AutoTest YAML plans. Use when the user asks for a UI test, E2E test, VS Code UI validation, webview test, Java extension pack workflow test, or autotest plan.

UI/E2E tests with AutoTest

Use this skill to add or update UI/E2E coverage for vscode-java-pack.

The repository uses @vscjava/vscode-autotest: YAML plans in test-plans/*.yaml launch VS Code, install Java extensions or local VSIX files, execute user-facing actions, capture screenshots, and write test-results/<plan>/results.json.

Prerequisites (local)

• Node.js >= 18 and JDK 21+ installed and on PATH.
• Close any running VS Code instance before running a plan locally; a running instance can block AutoTest from launching its own VS Code.
• When a plan references external sample projects, clone them as siblings of this repo first (CI does this automatically):

git clone --depth 1 https://github.com/redhat-developer/vscode-java.git ../vscode-java
git clone --depth 1 https://github.com/eclipse-jdtls/eclipse.jdt.ls.git ../eclipse.jdt.ls

Workflow

1. Identify the scenario and search test-plans/*.yaml for an existing plan that already covers the area.
2. Update the existing plan when possible. Create a new test-plans/<scenario>.yaml only when no existing plan fits.
3. Use stable AutoTest actions and deterministic verifiers. Do not add raw Playwright tests or screenshot-only checks.
4. Validate the plan:

npx -y @vscjava/vscode-autotest validate test-plans\<name>.yaml

1. If validating the current branch, build and package the extension:

npm ci   # first time only; on later iterations run just the two commands below
npm run build
npx @vscode/vsce@latest package -o vscode-java-pack-pr.vsix

1. Run the plan against the packaged VSIX:

npx -y @vscjava/vscode-autotest run test-plans\<name>.yaml --vsix vscode-java-pack-pr.vsix --no-llm

1. Inspect test-results/<name>/results.json and test-results/<name>/screenshots/.
2. Iterate based on the failure cause:

• Incorrect plan: fix the YAML and rerun step 6. No rebuild is needed.
• Product code fix: after editing extension source, re-run step 5 (build + repackage the VSIX) before rerunning step 6. Never rerun against a stale VSIX.
• Product bug (report only): report the observed behavior and cite the failing step, screenshot, and result reason.

Authoring rules

• For most plans, use:

setup:
  extension: "redhat.java"
  extensions:
    - "vscjava.vscode-java-pack"
  vscodeVersion: "stable"

• Use --vsix vscode-java-pack-pr.vsix to test current-branch changes.
• Prefer executeVSCodeCommand or run command for command-driven UI.
• Prefer verifyWebview for webview content, verifyTreeItem for tree views, verifyFile for generated or modified files, verifyProblems for diagnostics, and verifyCompletion for IntelliSense.
• Use insertLineInFile for Java source edits that JDT LS must observe.
• Use verifyFile instead of verifyEditor after code actions, organize imports, or rename.
• Keep step IDs unique, descriptive, and kebab-case.
• Avoid hard-coded coordinates and brittle DOM structure assumptions.

CI

The repository workflow .github/workflows/e2e-autotest.yml builds a branch VSIX, discovers test-plans/*.yaml, runs plans on Windows/Linux/macOS, and uploads test-results/ artifacts.

Use workflow dispatch when the user asks to validate in CI or across platforms. The test_plan input can target a single plan; leave it empty to run all plans.