v8/test/webkit/regexp-literals-arent-constants.js

58 lines
2.5 KiB
JavaScript

// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
description("This test ensures that regeular expression literals are constants, and so persist over multiple executions");
for (var i = 0; i < 2; i++) {
currentRegExp = /a/;
if (i)
shouldBeFalse("currentRegExp === lastRegExp");
lastRegExp = currentRegExp;
}
function test1() {
for (var i = 0; i < 2; i++) {
currentRegExp = /a/;
if (i)
shouldBeFalse("currentRegExp === lastRegExp");
lastRegExp = currentRegExp;
}
}
test1();
function returnRegExpLiteral() { return /a/ }
shouldBeFalse("returnRegExpLiteral() === returnRegExpLiteral()");
function returnConditionalRegExpLiteral(first) {
if (first)
return /a/;
return /a/;
}
shouldBeFalse("returnConditionalRegExpLiteral(true) === returnConditionalRegExpLiteral(true)");
shouldBeFalse("returnConditionalRegExpLiteral(false) === returnConditionalRegExpLiteral(false)");
shouldBeFalse("returnConditionalRegExpLiteral(true) === returnConditionalRegExpLiteral(false)");
returnRegExpLiteral().someAddedProperty = true;
shouldBeUndefined("returnRegExpLiteral().someAddedProperty");