filter commands that start with an underscore, make it option in the API

extensions/vscode-api-tests/src/commands.test.ts

@@ -0,0 +1,42 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import * as assert from 'assert';
+import {commands} from 'vscode';
+import {join} from 'path';
+
+suite("commands namespace tests", () => {
+
+	test('getCommands', function(done) {
+
+		let p1 = commands.getCommands().then(commands => {
+			let hasOneWithUnderscore = false;
+			for (let command of commands) {
+				if (command[0] === '_') {
+					hasOneWithUnderscore = true;
+					break;
+				}
+			}
+			assert.ok(hasOneWithUnderscore);
+		}, done);
+
+		let p2 = commands.getCommands(true).then(commands => {
+			let hasOneWithUnderscore = false;
+			for (let command of commands) {
+				if (command[0] === '_') {
+					hasOneWithUnderscore = true;
+					break;
+				}
+			}
+			assert.ok(!hasOneWithUnderscore);
+		}, done);
+
+		Promise.all([p1, p2]).then(() => {
+			done();
+		}, done);
+	});
+});