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/utils.ts

@@ -0,0 +1,38 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import assert = require('assert');
+import * as sqlops from 'sqlops';
+import * as vscode from 'vscode';
+import { TestServerProfile } from './testConfig';
+
+export async function connectToServer(server: TestServerProfile) {
+	let connectionProfile: sqlops.IConnectionProfile = {
+		serverName: server.serverName,
+		databaseName: server.database,
+		authenticationType: server.authenticationTypeName,
+		providerName: server.providerName,
+		connectionName: '',
+		userName: server.userName,
+		password: server.password,
+		savePassword: false,
+		groupFullName: undefined,
+		saveProfile: true,
+		id: undefined,
+		groupId: undefined,
+		options: {}
+	};
+	await ensureConnectionViewOpened();
+	let result = <sqlops.ConnectionResult>await sqlops.connection.connect(connectionProfile);
+	assert(result.connected, `Failed to connect to "${connectionProfile.serverName}", error code: ${result.errorCode}, error message: ${result.errorMessage}`);
+
+	//workaround
+	//wait for OE to load
+	await new Promise(c => setTimeout(c, 3000));
+}
+
+export async function ensureConnectionViewOpened() {
+	await vscode.commands.executeCommand('workbench.view.connections');
+}