Add tests for verboseRegExp().

src/test/common/utils/regexp.unit.test.ts

@@ -0,0 +1,75 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+'use strict';
+
+// tslint:disable:no-multiline-string
+
+import { expect } from 'chai';
+
+import {
+ verboseRegExp
+} from '../../../client/common/utils/regexp';
+
+suite('Utils for regular expressions - verboseRegExp()', () => {
+ test('typical usage', () => {
+ const regex = verboseRegExp(`
+ ^
+ (?:
+ spam \\b .*
+ ) |
+ (?:
+ eggs \\b .*
+ )
+ $
+ `);
+
+ expect(regex.source).to.equal('^(?:spam\\b.*)|(?:eggs\\b.*)$', 'mismatch');
+ });
+
+ const whitespaceTests = [
+ ['spam eggs', 'spameggs'],
+ [`spam
+ eggs`, 'spameggs'],
+ // empty
+ [' ', '(?:)'],
+ [`
+ `, '(?:)']
+ ];
+ for (const [pat, expected] of whitespaceTests) {
+ test(`whitespace removed ("${pat}")`, () => {
+ const regex = verboseRegExp(pat);
+
+ expect(regex.source).to.equal(expected, 'mismatch');
+ });
+ }
+
+ const noopPatterns = [
+ '^(?:spam\\b.*)$',
+ 'spam',
+ '^spam$',
+ 'spam$',
+ '^spam'
+ ];
+ for (const pat of noopPatterns) {
+ test(`pattern not changed ("${pat}")`, () => {
+ const regex = verboseRegExp(pat);
+
+ expect(regex.source).to.equal(pat, 'mismatch');
+ });
+ }
+
+ const emptyPatterns = [
+ '',
+ `
+ `,
+ ' '
+ ];
+ for (const pat of emptyPatterns) {
+ test(`no pattern ("${pat}")`, () => {
+ const regex = verboseRegExp(pat);
+
+ expect(regex.source).to.equal('(?:)', 'mismatch');
+ });
+ }
+});