v8/test/mjsunit/contextual-calls.js

104 lines
4.9 KiB
JavaScript

// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
// OWNER OR 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.
var realms = [Realm.current(), Realm.create()];
globals = [Realm.global(0), Realm.global(1)];
Realm.shared = {}
function install(name, value) {
Realm.shared[name] = value;
for (i in realms) {
Realm.eval(realms[i], name + " = Realm.shared['" + name + "'];");
}
}
install('return_this', function() { return this; });
install('return_this_strict', function () { 'use strict'; return this; });
// test behaviour of 'with' scope
for (i in realms) {
Realm.shared.results = [];
// in the second case, 'this' is found in the with scope,
// so the receiver is 'this'
Realm.eval(realms[i]," \
with('irrelevant') { \
Realm.shared.results.push(return_this()); \
Realm.shared.results.push(return_this_strict()); \
} \
with(this) { \
Realm.shared.results.push(return_this()); \
Realm.shared.results.push(return_this_strict()); \
} \
");
assertSame(globals[0], Realm.shared.results[0]);
assertSame(undefined, Realm.shared.results[1]);
assertSame(globals[i], Realm.shared.results[2]);
assertSame(globals[i], Realm.shared.results[3]);
}
// test 'apply' and 'call'
for (i in realms) {
// 'apply' without a receiver is a contextual call
assertSame(globals[0], Realm.eval(realms[i],'return_this.apply()')) ;
assertSame(undefined, Realm.eval(realms[i],'return_this_strict.apply()'));
assertSame(globals[0], Realm.eval(realms[i],'return_this.apply(null)')) ;
assertSame(null, Realm.eval(realms[i],'return_this_strict.apply(null)'));
// 'call' without a receiver is a contextual call
assertSame(globals[0], Realm.eval(realms[i],'return_this.call()')) ;
assertSame(undefined, Realm.eval(realms[i],'return_this_strict.call()'));
assertSame(globals[0], Realm.eval(realms[i],'return_this.call(null)')) ;
assertSame(null, Realm.eval(realms[i],'return_this_strict.call(null)'));
}
// test ics
for (var i = 0; i < 4; i++) {
assertSame(globals[0], return_this());
assertSame(undefined, return_this_strict());
}
// BUG(1547)
Realm.eval(realms[0], "var name = 'o'");
Realm.eval(realms[1], "var name = 'i'");
install('f', function() { return this.name; });
install('g', function() { "use strict"; return this ? this.name : "u"; });
for (i in realms) {
result = Realm.eval(realms[i], " \
(function(){return f();})() + \
(function(){return (1,f)();})() + \
(function(){'use strict'; return f();})() + \
(function(){'use strict'; return (1,f)();})() + \
(function(){return g();})() + \
(function(){return (1,g)();})() + \
(function(){'use strict'; return g();})() + \
(function(){'use strict'; return (1,g)();})(); \
");
assertSame("oooouuuu", result);
}