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

test/smoke/src/sql/testConfig.ts

@@ -0,0 +1,92 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+/*
+	TODO: Due to a runtime error, I duplicated this file at these 2 locations:
+	$/extensions/integration-test/src/testConfig.ts
+	$/test/smoke/src/sql/testConfig.ts
+	for now, make sure to keep both files in sync.
+*/
+
+interface ITestServerProfile {
+	serverName: string;
+	userName: string;
+	password: string;
+	authenticationType: AuthenticationType;
+	database: string;
+	provider: ConnectionProvider;
+	version: string;
+}
+
+interface INameDisplayNamePair {
+	name: string;
+	displayName: string;
+}
+
+export enum AuthenticationType {
+	Windows,
+	SqlLogin
+}
+
+export enum ConnectionProvider {
+	SQLServer
+}
+
+var connectionProviderMapping = {};
+var authenticationTypeMapping = {};
+connectionProviderMapping[ConnectionProvider.SQLServer] = { name: 'MSSQL', displayName: 'Microsoft SQL Server' };
+
+authenticationTypeMapping[AuthenticationType.SqlLogin] = { name: 'SqlLogin', displayName: 'SQL Login' };
+authenticationTypeMapping[AuthenticationType.Windows] = { name: 'Integrated', displayName: 'Windows Authentication' };
+
+export class TestServerProfile {
+	constructor(private _profile: ITestServerProfile) { }
+	public get serverName(): string { return this._profile.serverName; }
+	public get userName(): string { return this._profile.userName; }
+	public get password(): string { return this._profile.password; }
+	public get database(): string { return this._profile.database; }
+	public get version(): string { return this._profile.version; }
+	public get provider(): ConnectionProvider { return this._profile.provider; }
+	public get providerName(): string { return getEnumMappingEntry(connectionProviderMapping, this.provider).name; }
+	public get providerDisplayName(): string { return getEnumMappingEntry(connectionProviderMapping, this.provider).displayName; }
+	public get authenticationType(): AuthenticationType { return this._profile.authenticationType; }
+	public get authenticationTypeName(): string { return getEnumMappingEntry(authenticationTypeMapping, this.authenticationType).name; }
+	public get authenticationTypeDisplayName(): string { return getEnumMappingEntry(authenticationTypeMapping, this.authenticationType).displayName; }
+}
+
+var TestingServers: TestServerProfile[] = [
+	new TestServerProfile(
+		{
+			serverName: 'SQLTOOLS2017-3',
+			userName: '',
+			password: '',
+			authenticationType: AuthenticationType.Windows,
+			database: 'master',
+			provider: ConnectionProvider.SQLServer,
+			version: '2017'
+		})
+];
+
+function getEnumMappingEntry(mapping: any, enumValue: any): INameDisplayNamePair {
+	let entry = mapping[enumValue];
+	if (entry) {
+		return entry;
+	} else {
+		throw `Unknown enum type: ${enumValue.toString()}`;
+	}
+}
+
+export async function getDefaultTestingServer(): Promise<TestServerProfile> {
+	let servers = await getTestingServers();
+	return servers[0];
+}
+
+export async function getTestingServers(): Promise<TestServerProfile[]> {
+	let promise = new Promise<TestServerProfile[]>(resolve => {
+		resolve(TestingServers);
+	});
+	await promise;
+	return promise;
+}