Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'

lib/vscode/src/vs/base/test/common/uuid.test.ts

@@ -0,0 +1,23 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+import * as assert from 'assert';
+import * as uuid from 'vs/base/common/uuid';
+
+suite('UUID', () => {
+	test('generation', () => {
+		const asHex = uuid.generateUuid();
+		assert.equal(asHex.length, 36);
+		assert.equal(asHex[14], '4');
+		assert.ok(asHex[19] === '8' || asHex[19] === '9' || asHex[19] === 'a' || asHex[19] === 'b');
+	});
+
+	test('self-check', function () {
+		const t1 = Date.now();
+		while (Date.now() - t1 < 50) {
+			const value = uuid.generateUuid();
+			assert.ok(uuid.isUUID(value));
+		}
+	});
+});