v8/test/webkit/fast/js/caller-property.js
machenbach@chromium.org 3c9efdeeb4 Migrate more tests from blink repository.
The stand-alone test driver is changed a bit:
- Don't use the errorMessage list. It is used differently in the embedded driver. There it collects parser errors - instead of failure messages.
- Remove html links in description texts. Some test descriptions print a web reference.

The migrated tests fall into 3 categories:
1. Tests outside fast/js
2. Tests that print FAIL messages (and also expect those) - these tests should be examined later if they make sense at all
3. Tests with html links in the test description

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/20280003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15889 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-07-25 19:54:24 +00:00

86 lines
4.7 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 tests for caller property in functions. Only functions that are called from inside of other functions and have a parent should have this property set. Tests return true when caller is found and false when the caller is null.'
)
function child()
{
return (child.caller !== null);
}
function parent()
{
return child();
}
var childHasCallerWhenExecutingGlobalCode = (child.caller !== null);
var childHasCallerWhenCalledWithoutParent = child();
var childHasCallerWhenCalledFromWithinParent = parent();
shouldBe('childHasCallerWhenExecutingGlobalCode', 'false');
shouldBe('childHasCallerWhenCalledWithoutParent', 'false');
shouldBe('childHasCallerWhenCalledFromWithinParent', 'true')
// The caller property should throw in strict mode, and a non-strict function cannot use caller to reach a strict caller (see ES5.1 15.3.5.4).
function nonStrictCallee() { return nonStrictCallee.caller; }
function strictCallee() { "use strict"; return strictCallee.caller; }
function nonStrictCaller(x) { return x(); }
function strictCaller(x) { "use strict"; return x(); }
shouldBe("nonStrictCaller(nonStrictCallee)", "nonStrictCaller");
shouldThrow("nonStrictCaller(strictCallee)", '"TypeError: Type error"');
shouldThrow("strictCaller(nonStrictCallee)", '"TypeError: Function.caller used to retrieve strict caller"');
shouldThrow("strictCaller(strictCallee)", '"TypeError: Type error"');
// .caller within a bound function reaches the caller, ignoring the binding.
var boundNonStrictCallee = nonStrictCallee.bind();
var boundStrictCallee = strictCallee.bind();
shouldBe("nonStrictCaller(boundNonStrictCallee)", "nonStrictCaller");
shouldThrow("nonStrictCaller(boundStrictCallee)", '"TypeError: Type error"');
shouldThrow("strictCaller(boundNonStrictCallee)", '"TypeError: Function.caller used to retrieve strict caller"');
shouldThrow("strictCaller(boundStrictCallee)", '"TypeError: Type error"');
// Check that .caller works (or throws) as expected, over an accessor call.
function getFooGetter(x) { return Object.getOwnPropertyDescriptor(x, 'foo').get; }
function getFooSetter(x) { return Object.getOwnPropertyDescriptor(x, 'foo').set; }
var nonStrictAccessor = {
get foo() { return getFooGetter(nonStrictAccessor).caller; },
set foo(x) { if (getFooSetter(nonStrictAccessor).caller !==x) throw false; }
};
var strictAccessor = {
get foo() { "use strict"; return getFooGetter(strictAccessor).caller; },
set foo(x) { "use strict"; if (getFooSetter(strictAccessor).caller !==x) throw false; }
};
function nonStrictGetter(x) { return x.foo; }
function nonStrictSetter(x) { x.foo = nonStrictSetter; return true; }
function strictGetter(x) { "use strict"; return x.foo; }
function strictSetter(x) { "use strict"; x.foo = nonStrictSetter; return true; }
shouldBe("nonStrictGetter(nonStrictAccessor)", "nonStrictGetter");
shouldBeTrue("nonStrictSetter(nonStrictAccessor)");
shouldThrow("nonStrictGetter(strictAccessor)", '"TypeError: Type error"');
shouldThrow("nonStrictSetter(strictAccessor)", '"TypeError: Type error"');
shouldThrow("strictGetter(nonStrictAccessor)", '"TypeError: Function.caller used to retrieve strict caller"');
shouldThrow("strictSetter(nonStrictAccessor)", '"TypeError: Function.caller used to retrieve strict caller"');
shouldThrow("strictGetter(strictAccessor)", '"TypeError: Type error"');
shouldThrow("strictSetter(strictAccessor)", '"TypeError: Type error"');