add a test for Windows

Author: bobbrow

Extension/test/scenarios/SimpleCppProject/tests/devEnvironment.test.ts

@@ -0,0 +1,26 @@
+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All Rights Reserved.
+ * See 'LICENSE' in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+import { equal } from 'assert';
+import { suite } from 'mocha';
+import * as vscode from 'vscode';
+import * as util from '../../../../src/common';
+import { isWindows } from "../../../../src/constants";
+
+suite("set developer environment", () => {
+    if (isWindows) {
+        test("set developer environment (Windows)", async () => {
+            const promise = vscode.commands.executeCommand('C_Cpp.SetDevEnvironment', 'test');
+            const timer = setInterval(() => {
+                void vscode.commands.executeCommand('workbench.action.acceptSelectedQuickOpenItem');
+            }, 1000);
+            await promise;
+            clearInterval(timer);
+            equal(util.hasMsvcEnvironment(), true, "MSVC environment not set correctly.");
+        });
+    } else {
+        test("set developer environment (Linux/macOS)", () => {
+        });
+    }
+});