From 23d59df81a4705d65357c44279088d67fc9e3d0b Mon Sep 17 00:00:00 2001
From: Tobias Bosch <tbosch1009@gmail.com>
Date: Tue, 26 May 2015 13:57:13 -0700
Subject: [PATCH] feat(test_lib): add `containsRegex`

---
 modules/angular2/src/test_lib/utils.ts         |  9 ++++++++-
 .../angular2/test/test_lib/test_lib_spec.js    | 18 ++++++++++++++++--
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/modules/angular2/src/test_lib/utils.ts b/modules/angular2/src/test_lib/utils.ts
index f939c5fd6b..9e2d8a86a8 100644
--- a/modules/angular2/src/test_lib/utils.ts
+++ b/modules/angular2/src/test_lib/utils.ts
@@ -1,6 +1,6 @@
 import {List, ListWrapper} from 'angular2/src/facade/collection';
 import {DOM} from 'angular2/src/dom/dom_adapter';
-import {isPresent} from 'angular2/src/facade/lang';
+import {isPresent, RegExpWrapper, StringWrapper, RegExp} from 'angular2/src/facade/lang';
 import {resolveInternalDomView} from 'angular2/src/render/dom/view/view';
 
 export class Log {
@@ -41,3 +41,10 @@ export function dispatchEvent(element, eventType) {
 export function el(html: string) {
   return DOM.firstChild(DOM.content(DOM.createTemplate(html)));
 }
+
+var _RE_SPECIAL_CHARS = ['-', '[', ']', '/', '{', '}', '\\', '(', ')', '*', '+', '?', '.', '^', '$', '|'];
+var _ESCAPE_RE = RegExpWrapper.create(`[\\${_RE_SPECIAL_CHARS.join('\\')}]`);
+export function containsRegexp(input: string): RegExp {
+  return RegExpWrapper.create(StringWrapper.replaceAllMapped(input, _ESCAPE_RE, (match) => `\\${match[0]}`));
+}
+
diff --git a/modules/angular2/test/test_lib/test_lib_spec.js b/modules/angular2/test/test_lib/test_lib_spec.js
index 069fa6cfd8..25515e03d2 100644
--- a/modules/angular2/test/test_lib/test_lib_spec.js
+++ b/modules/angular2/test/test_lib/test_lib_spec.js
@@ -1,6 +1,6 @@
-import {describe, it, iit, ddescribe, expect, tick, async, SpyObject, beforeEach, proxy} from 'angular2/test_lib';
+import {describe, it, iit, ddescribe, expect, tick, async, SpyObject, beforeEach, proxy, containsRegexp} from 'angular2/test_lib';
 import {MapWrapper} from 'angular2/src/facade/collection';
-import {IMPLEMENTS} from 'angular2/src/facade/lang';
+import {IMPLEMENTS, RegExpWrapper} from 'angular2/src/facade/lang';
 
 class TestObj {
   prop;
@@ -118,5 +118,19 @@ export function main() {
         expect(spyObj.someFunc()).toBe(null);
       });
     });
+
+    describe('containsRegexp', () => {
+
+      it('should allow any prefix and suffix', () => {
+        expect(RegExpWrapper.firstMatch(containsRegexp('b'), 'abc')).toBeTruthy();
+        expect(RegExpWrapper.firstMatch(containsRegexp('b'), 'adc')).toBeFalsy();
+      });
+
+      it('should match various special characters', () => {
+        expect(RegExpWrapper.firstMatch(containsRegexp('a.b'), 'a.b')).toBeTruthy();
+        expect(RegExpWrapper.firstMatch(containsRegexp('axb'), 'a.b')).toBeFalsy();
+      });
+
+    });
   });
 }