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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
(function TestIdentityEscapes() {
// \u not followed by 4 hex digits is treated as an identity escape.
var r0 = /\u/;
assertTrue(r0.test("u"));
r0 = RegExp("\\u");
assertTrue(r0.test("u"));
var r1 = /\usecond/;
assertTrue(r1.test("usecond"));
r1 = RegExp("\\usecond");
assertTrue(r1.test("usecond"));
var r2 = /first\u/;
assertTrue(r2.test("firstu"));
// This used to return true (which was a bug).
assertFalse(r2.test("first\\u"));
r2 = RegExp("first\\u");
assertTrue(r2.test("firstu"));
// This used to return true (which was a bug).
assertFalse(r2.test("first\\u"));
var r3 = /first\usecond/;
assertTrue(r3.test("firstusecond"));
assertFalse(r3.test("first\\usecond"));
r3 = RegExp("first\\usecond");
assertTrue(r3.test("firstusecond"));
assertFalse(r3.test("first\\usecond"));
var r4 = /first\u123second/;
assertTrue(r4.test("firstu123second"));
assertFalse(r4.test("first\\u123second"));
r4 = RegExp("first\\u123second");
assertTrue(r4.test("firstu123second"));
assertFalse(r4.test("first\\u123second"));
// \X where X is not a legal escape character is treated as identity escape
// too.
var r5 = /\a/;
assertTrue(r5.test("a"));
r5 = RegExp("\\a");
assertTrue(r5.test("a"));
var r6 = /\asecond/;
assertTrue(r6.test("asecond"));
r6 = RegExp("\\asecond");
assertTrue(r6.test("asecond"));
var r7 = /first\a/;
assertTrue(r7.test("firsta"));
assertFalse(r7.test("first\\a"));
r7 = RegExp("first\\a");
assertTrue(r7.test("firsta"));
assertFalse(r7.test("first\\a"));
var r8 = /first\asecond/;
assertTrue(r8.test("firstasecond"));
assertFalse(r8.test("first\\asecond"));
r8 = RegExp("first\\asecond");
assertTrue(r8.test("firstasecond"));
assertFalse(r8.test("first\\asecond"));
})();