add API tests that run on a workspace

extensions/vscode-api-tests/src/singlefolder-tests/configuration.test.ts

@@ -0,0 +1,46 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import 'mocha';
+import * as assert from 'assert';
+import * as vscode from 'vscode';
+
+suite('Configuration tests', () => {
+
+	test('configurations, language defaults', function () {
+		const defaultLanguageSettings = vscode.workspace.getConfiguration().get('[abcLang]');
+
+		assert.deepEqual(defaultLanguageSettings, {
+			'editor.lineNumbers': 'off',
+			'editor.tabSize': 2
+		});
+	});
+
+	test('configuration, defaults', () => {
+		const config = vscode.workspace.getConfiguration('farboo');
+
+		assert.ok(config.has('config0'));
+		assert.equal(config.get('config0'), true);
+		assert.equal(config.get('config4'), '');
+		assert.equal(config['config0'], true);
+		assert.equal(config['config4'], '');
+
+		assert.throws(() => (<any>config)['config4'] = 'valuevalue');
+
+		assert.ok(config.has('nested.config1'));
+		assert.equal(config.get('nested.config1'), 42);
+		assert.ok(config.has('nested.config2'));
+		assert.equal(config.get('nested.config2'), 'Das Pferd frisst kein Reis.');
+	});
+
+	test('configuration, name vs property', () => {
+		const config = vscode.workspace.getConfiguration('farboo');
+
+		assert.ok(config.has('get'));
+		assert.equal(config.get('get'), 'get-prop');
+		assert.deepEqual(config['get'], config.get);
+		assert.throws(() => config['get'] = <any>'get-prop');
+	});
+});