From 619b8ab8220a7bc87a512d597c19a063d0ca5fa2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hu=C3=A1ng=20J=C3=B9nli=C3=A0ng?= <i@jhuang.me>
Date: Wed, 6 Dec 2017 22:30:00 +0800
Subject: [PATCH] test(forms): add test on applying unicode flag (#20819)

PR Close #20819
---
 packages/forms/test/validators_spec.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/packages/forms/test/validators_spec.ts b/packages/forms/test/validators_spec.ts
index 148157e2ba..efcf6cc88a 100644
--- a/packages/forms/test/validators_spec.ts
+++ b/packages/forms/test/validators_spec.ts
@@ -11,6 +11,7 @@ import {describe, expect, it} from '@angular/core/testing/src/testing_internal';
 import {AbstractControl, AsyncValidatorFn, FormArray, FormControl, Validators} from '@angular/forms';
 import {normalizeAsyncValidator} from '@angular/forms/src/directives/normalize_validator';
 import {AsyncValidator, ValidationErrors, ValidatorFn} from '@angular/forms/src/directives/validators';
+import {browserDetection} from '@angular/platform-browser/testing/src/browser_util';
 import {Observable, of , timer} from 'rxjs';
 import {first, map} from 'rxjs/operators';
 
@@ -274,6 +275,13 @@ import {first, map} from 'rxjs/operators';
       it('should not error on "undefined" pattern',
          () => expect(Validators.pattern(undefined !)(new FormControl('aaAA'))).toBeNull());
 
+      if (browserDetection.supportsRegExUnicodeFlag) {
+        it('should apply unicode flag to pattern when supported', () => {
+          expect(Validators.pattern('[\u{10000}-\u{10001}]')(new FormControl('\u{10000}')))
+              .toBeNull();
+        });
+      }
+
       it('should work with pattern string containing both boundary symbols',
          () => expect(Validators.pattern('^[aA]*$')(new FormControl('aaAA'))).toBeNull());