Creating a new database project, project items

* can create, open, and close sqlproj files
* can add sql objects to projects

extensions/sql-database-projects/src/test/testUtils.ts

@@ -0,0 +1,35 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as path from 'path';
+import * as os from 'os';
+import * as constants from '../common/constants';
+
+import { promises as fs } from 'fs';
+
+export async function createTestSqlProj(contents: string, folderPath?: string): Promise<string> {
+	return await createTestFile(contents, 'TestProject.sqlproj', folderPath);
+}
+
+export async function createTestDataSources(contents: string, folderPath?: string): Promise<string> {
+	return await createTestFile(contents, constants.dataSourcesFileName, folderPath);
+}
+
+export async function generateTestFolderPath(): Promise<string> {
+	const folderPath = path.join(os.tmpdir(), `TestProject_${new Date().getTime()}`);
+	await fs.mkdir(folderPath, { recursive: true });
+
+	return folderPath;
+}
+
+async function createTestFile(contents: string, fileName: string, folderPath?: string): Promise<string> {
+	folderPath = folderPath ?? await generateTestFolderPath();
+	const filePath = path.join(folderPath, fileName);
+
+	await fs.mkdir(path.dirname(filePath), { recursive: true });
+	await fs.writeFile(filePath, contents);
+
+	return filePath;
+}