[html] resolve JS completion proposals

extensions/html/server/src/test/words.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.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import * as assert from 'assert';
+import * as words from '../utils/words';
+
+suite('Words', () => {
+
+	let wordRegex = /(-?\d*\.\d\w*)|([^\`\~\!\@\#\%\^\&\*\(\)\-\=\+\[\{\]\}\\\|\;\:\'\"\,\.\<\>\/\?\s]+)/g;
+
+	function assertWord(value: string, expected: string): void {
+		let offset = value.indexOf('|');
+		value = value.substr(0, offset) + value.substr(offset + 1);
+
+		let actualRange = words.getWordAtText(value, offset, wordRegex);
+		assert(actualRange.start <= offset);
+		assert(actualRange.start + actualRange.length >= offset);
+		assert.equal(value.substr(actualRange.start, actualRange.length), expected);
+	}
+
+
+	test('Basic', function (): any {
+		assertWord('|var x1 = new F<A>(a, b);', 'var');
+		assertWord('v|ar x1 = new F<A>(a, b);', 'var');
+		assertWord('var| x1 = new F<A>(a, b);', 'var');
+		assertWord('var |x1 = new F<A>(a, b);', 'x1');
+		assertWord('var x1| = new F<A>(a, b);', 'x1');
+		assertWord('var x1 = new |F<A>(a, b);', 'F');
+		assertWord('var x1 = new F<|A>(a, b);', 'A');
+		assertWord('var x1 = new F<A>(|a, b);', 'a');
+		assertWord('var x1 = new F<A>(a, b|);', 'b');
+		assertWord('var x1 = new F<A>(a, b)|;', '');
+		assertWord('var x1 = new F<A>(a, b)|;|', '');
+		assertWord('var x1 = |  new F<A>(a, b)|;|', '');
+	});
+
+	test('Multiline', function (): any {
+		assertWord('console.log("hello");\n|var x1 = new F<A>(a, b);', 'var');
+		assertWord('console.log("hello");\n|\nvar x1 = new F<A>(a, b);', '');
+		assertWord('console.log("hello");\n\r |var x1 = new F<A>(a, b);', 'var');
+	});
+
+});