try installing the extension another way

Author: bobbrow

.github/workflows/job-compile-and-test.yml

@@ -45,11 +45,8 @@ jobs:
         run: yarn test
         working-directory: Extension
 
-      - name: Install latest cpptools
-        run: code --install-extension ms-vscode.cpptools --pre-release
-
       - name: Acquire Native Binaries
-        run: yarn run copy-extension-binaries
+        run: yarn install-and-copy-binaries-for-test
         working-directory: Extension
 
       - name: Run languageServer integration tests

Extension/.scripts/copyExtensionBinaries.ts

@@ -74,16 +74,15 @@ async function getInstalledExtensions(root: string): Promise<InstalledExtension[
 }
 
 async function findLatestInstalledExtension(providedPath?: string): Promise<string> {
-    if (providedPath) {
-        return providedPath;
-    }
-
     const searchRoots: string[] = [
         join(homedir(), '.vscode', 'extensions'),
         join(homedir(), '.vscode-insiders', 'extensions'),
         join(homedir(), '.vscode-server', 'extensions'),
         join(homedir(), '.vscode-server-insiders', 'extensions')
     ];
+    if (providedPath) {
+        searchRoots.unshift(join(providedPath, 'extensions'));
+    }
 
     const installed: InstalledExtension[] = (await Promise.all(searchRoots.map(each => getInstalledExtensions(each)))).flat();
     if (!installed.length) {

Extension/.scripts/installAndCopyBinaries.ts

@@ -0,0 +1,24 @@
+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All Rights Reserved.
+ * See 'LICENSE' in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+
+import { spawnSync } from 'child_process';
+import { verbose } from '../src/Utility/Text/streams';
+import { heading } from './common';
+import * as copy from './copyExtensionBinaries';
+import { install, isolated } from "./vscode";
+
+export async function main() {
+    console.log(heading(`Install VS Code`));
+    const { cli, args } = await install();
+
+    console.log(heading('Install latest C/C++ Extension'));
+    verbose(`Running command: ${cli} ${args.join(' ')} --install-extension ms-vscode.cpptools --pre-release`);
+    const result = spawnSync(cli, ['--install-extension', 'ms-vscode.cpptools', '--pre-release'], { encoding: 'utf-8', shell: true })
+    if (result.stdout) {
+        verbose(result.stdout.toString());
+    }
+
+    await copy.main(isolated);
+}

Extension/package.json

@@ -6806,6 +6806,7 @@
         "generate-options-schema": "ts-node -T ./.scripts/generateOptionsSchema.ts",
         "copy-walkthrough-media": "ts-node -T ./.scripts/copyWalkthruMedia.ts",
         "copy-extension-binaries": "ts-node -T ./.scripts/copyExtensionBinaries.ts",
+        "install-and-copy-binaries-for-test": "ts-node -T ./.scripts/installAndCopyBinaries.ts",
         "translations-export": "yarn install && yarn prep && yarn generate-native-strings && gulp translations-export",
         "translations-generate": "gulp translations-generate",
         "translations-import": "gulp translations-import",