Test VS Code Version Matrix

Change default `npm test` behavior to use the version of VS Code specified in the `VSCODE_VER` environment variable, instead of testing hardcoded versions inside `runtest.ts`.

`VSCODE_VER` supports stable, insiders and version numbers like 1.55.0.

If the `VSCODE_VER` environment variable is not specified, then the latest stable version of VS Code is automatically used.

.github/workflows/test.yml

@@ -71,7 +71,12 @@ jobs:
 
   test:
     strategy:
+      fail-fast: false
       matrix:
+        vscode:
+          - '1.55.0'
+          - 'insiders'
+          - 'stable'
         os:
           - windows-latest
           - macos-latest
@@ -119,3 +124,4 @@ jobs:
         env:
           CI: true
           DISPLAY: ':99.0'
+          VSCODE_VERSION: ${{ matrix.vscode }}

src/test/runTest.ts

@@ -41,15 +41,24 @@ async function main(): Promise<void> {
     // Download VS Code, unzip it and run the integration test
     // start in the fixtures folder to prevent the language server from walking all the
     // project root folders, like node_modules
-    console.log('_______________LATEST_____________________');
-    await runTests(options);
-
-    console.log('_______________INSIDERS___________________');
-    options.version = 'insiders';
-    await runTests(options);
+    const vscodeVersion = process.env['VSCODE_VERSION'];
+    switch (vscodeVersion) {
+      case undefined:
+        console.log('_______________LATEST_____________________');
+        break;
+      case 'stable':
+        console.log('_______________LATEST_____________________');
+        break;
+      case 'insiders':
+        console.log('_______________INSIDERS_____________________');
+        options.version = vscodeVersion;
+        break;
+      default:
+        console.log(`_______________${vscodeVersion}_____________________`);
+        options.version = vscodeVersion;
+        break;
+    }
 
-    console.log('________________1.55.0____________________');
-    options.version = '1.55.0';
     await runTests(options);
   } catch (err) {
     console.error(err);