Add tests to CI job

Author: xeger

.github/workflows/main.yml

@@ -1,34 +1,56 @@
 name: Main
 on:
-- push
-- pull_request_target
+  - push
+  - pull_request_target
 jobs:
   ci:
     name: CI
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os:
+          - macos-latest
+          - ubuntu-latest
+          - windows-latest
+        ruby:
+          - 3.1
+          - 3.0
+          - 2.7
+    runs-on: ${{ matrix.os }}
     env:
       CI: true
     steps:
-    - uses: actions/checkout@master
-    - uses: actions/setup-node@v3
-      with:
-        node-version: 14.x
-        cache: yarn
-    - name: Compile
-      run: |
-        yarn install --frozen-lockfile
-        yarn compile
+      - uses: actions/checkout@master
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 14.x
+          cache: yarn
+      - uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+          ruby-version: ${{ matrix.ruby }}
+      - name: Compile extension
+        run: |
+          yarn install --frozen-lockfile
+          yarn compile
+      - name: Install gem
+        run: gem install syntax_tree
+      - name: Run tests
+        run: xvfb-run -a npm test
+        if: runner.os == 'Linux'
+      - name: Run tests
+        run: npm test
+        if: runner.os != 'Linux'
   automerge:
     name: AutoMerge
     needs: ci
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request_target' && (github.actor == github.repository_owner || github.actor == 'dependabot[bot]')
     steps:
-    - uses: actions/github-script@v6
-      with:
-        script: |
-          github.pulls.merge({
-            owner: context.payload.repository.owner.login,
-            repo: context.payload.repository.name,
-            pull_number: context.payload.pull_request.number
-          })
+      - uses: actions/github-script@v6
+        with:
+          script: |
+            github.pulls.merge({
+              owner: context.payload.repository.owner.login,
+              repo: context.payload.repository.name,
+              pull_number: context.payload.pull_request.number
+            })

src/test/suite/automation.ts

@@ -10,6 +10,10 @@ import { Uri, commands, window, workspace } from 'vscode';
 // but we need somewhere to put temp files.
 const WORKSPACE_FOLDER = fs.mkdtempSync(`${os.tmpdir()}${path.sep}vscode-syntax-tree-`);
 
+export async function startExtension() {
+  await commands.executeCommand('syntaxTree.start');
+}
+
 export async function closeAll() {
   while (window.activeTextEditor) {
     await commands.executeCommand('workbench.action.closeActiveEditor');
@@ -21,6 +25,7 @@ export async function createEditor(content: string, filename = 'test.rb') {
   await workspace.fs.writeFile(uri, new TextEncoder().encode(content));
   await window.showTextDocument(uri);
   assert.ok(window.activeTextEditor);
+  assert.equal(window.activeTextEditor.document.getText(), content);
   return window.activeTextEditor;
 }
 

src/test/suite/index.test.ts

@@ -1,4 +1,5 @@
 import * as assert from 'assert';
+import { before, beforeEach } from 'mocha';
 
 import * as auto from './automation';
 
@@ -15,6 +16,7 @@ end
 `;
 
 suite('Syntax Tree', () => {
+  before(auto.startExtension);
   test('Format Document', async () => {
     await auto.closeAll();
     const editor = await auto.createEditor(UNFORMATTED);