Alanren/integration test (#3657)

* add an extension for integration tests

* setup ads before running test

* test setup

* test cases

* bash script

* shorter temp folder name

* code cleanup

* add commented out original code

* fix test error

* test result path

* rename results file

* change file path

* report smoke test results

* test stablize

* test stablization and configurable test servers

* fix smoke test error

* connection provider

* simplify the integration test script

* add comment

* fix tslint error

* address PR comments

* add temp log to check whether the environment variable is already set

* remove temp log

* move api definition to testapi typing file

* exclude integration tests extension

* address comments

extensions/integration-tests/src/setup.test.ts

@@ -0,0 +1,21 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import 'mocha';
+import * as vscode from 'vscode';
+import { context } from './testContext';
+
+if (!context.RunTest) {
+	suite('integration test setup', () => {
+		test('test setup', async function () {
+			//Prepare the environment and make it ready for testing
+			await vscode.commands.executeCommand('test.setupIntegrationTest');
+			//Reload the window, this is required for some changes made by the 'test.setupIntegrationTest' to work
+			await vscode.commands.executeCommand('workbench.action.reloadWindow');
+		});
+	});
+}