Source/JavaScriptCore/API/tests/testapi.js

/*
 * Copyright (C) 2006 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. ``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
 * 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.
 */

function bludgeonArguments() { if (0) arguments; return function g() {} }
h = bludgeonArguments();
gc();

var failed = false;
function pass(msg)
{
    print("PASS: " + msg, "green");
}

function fail(msg)
{
    print("FAIL: " + msg, "red");
    failed = true;
}

function shouldBe(a, b)
{
    var evalA;
    try {
        evalA = eval(a);
    } catch(e) {
        evalA = e;
    }
    
    if (evalA == b || isNaN(evalA) && typeof evalA == 'number' && isNaN(b) && typeof b == 'number')
        pass(a + " should be " + b + " and is.");
    else
        fail(a + " should be " + b + " but instead is " + evalA + ".");
}

function shouldThrow(a)
{
    var evalA;
    try {
        eval(a);
    } catch(e) {
        pass(a + " threw: " + e);
        return;
    }

    fail(a + " did not throw an exception.");
}

function globalStaticFunction()
{
    return 4;
}

shouldBe("globalStaticValue", 3);
shouldBe("globalStaticFunction()", 4);
shouldBe("this.globalStaticFunction()", 4);

function globalStaticFunction2() {
    return 10;
}
shouldBe("globalStaticFunction2();", 10);
this.globalStaticFunction2 = function() { return 20; }
shouldBe("globalStaticFunction2();", 20);
shouldBe("this.globalStaticFunction2();", 20);

function iAmNotAStaticFunction() { return 10; }
shouldBe("iAmNotAStaticFunction();", 10);
this.iAmNotAStaticFunction = function() { return 20; }
shouldBe("iAmNotAStaticFunction();", 20);

shouldBe("typeof MyObject", "function"); // our object implements 'call'
MyObject.cantFind = 1;
shouldBe("MyObject.cantFind", undefined);
MyObject.regularType = 1;
shouldBe("MyObject.regularType", 1);
MyObject.alwaysOne = 2;
shouldBe("MyObject.alwaysOne", 1);
MyObject.cantDelete = 1;
delete MyObject.cantDelete;
shouldBe("MyObject.cantDelete", 1);
shouldBe("delete MyObject.throwOnDelete", "an exception");
MyObject.cantSet = 1;
shouldBe("MyObject.cantSet", undefined);
shouldBe("MyObject.throwOnGet", "an exception");
shouldBe("MyObject.throwOnSet = 5", "an exception");
shouldBe("MyObject('throwOnCall')", "an exception");
shouldBe("new MyObject('throwOnConstruct')", "an exception");
shouldBe("'throwOnHasInstance' instanceof MyObject", "an exception");

MyObject.nullGetForwardSet = 1;
shouldBe("MyObject.nullGetForwardSet", 1);

var foundMyPropertyName = false;
var foundRegularType = false;
for (var p in MyObject) {
    if (p == "myPropertyName")
        foundMyPropertyName = true;
    if (p == "regularType")
        foundRegularType = true;
}

if (foundMyPropertyName)
    pass("MyObject.myPropertyName was enumerated");
else
    fail("MyObject.myPropertyName was not enumerated");

if (foundRegularType)
    pass("MyObject.regularType was enumerated");
else
    fail("MyObject.regularType was not enumerated");

var alwaysOneDescriptor = Object.getOwnPropertyDescriptor(MyObject, "alwaysOne");
shouldBe('typeof alwaysOneDescriptor', "object");
shouldBe('alwaysOneDescriptor.value', MyObject.alwaysOne);
shouldBe('alwaysOneDescriptor.configurable', true);
shouldBe('alwaysOneDescriptor.enumerable', false); // Actually it is.
var cantFindDescriptor = Object.getOwnPropertyDescriptor(MyObject, "cantFind");
shouldBe('typeof cantFindDescriptor', "object");
shouldBe('cantFindDescriptor.value', MyObject.cantFind);
shouldBe('cantFindDescriptor.configurable', true);
shouldBe('cantFindDescriptor.enumerable', false);
try {
    // If getOwnPropertyDescriptor() returned an access descriptor, this wouldn't throw.
    Object.getOwnPropertyDescriptor(MyObject, "throwOnGet");
} catch (e) {
    pass("getting property descriptor of throwOnGet threw exception");
}
var myPropertyNameDescriptor = Object.getOwnPropertyDescriptor(MyObject, "myPropertyName");
shouldBe('typeof myPropertyNameDescriptor', "object");
shouldBe('myPropertyNameDescriptor.value', MyObject.myPropertyName);
shouldBe('myPropertyNameDescriptor.configurable', true);
shouldBe('myPropertyNameDescriptor.enumerable', false); // Actually it is.
try {
    // if getOwnPropertyDescriptor() returned an access descriptor, this wouldn't throw.
    Object.getOwnPropertyDescriptor(MyObject, "hasPropertyLie");
} catch (e) {
    pass("getting property descriptor of hasPropertyLie threw exception");
}
shouldBe('Object.getOwnPropertyDescriptor(MyObject, "doesNotExist")', undefined);

myObject = new MyObject();

shouldBe("delete MyObject.regularType", true);
shouldBe("MyObject.regularType", undefined);
shouldBe("MyObject(0)", 1);
shouldBe("MyObject()", undefined);
shouldBe("typeof myObject", "object");
shouldBe("MyObject ? 1 : 0", true); // toBoolean
shouldBe("+MyObject", 1); // toNumber
shouldBe("(Object.prototype.toString.call(MyObject))", "[object MyObject]"); // Object.prototype.toString
shouldBe("(MyObject.toString())", "[object MyObject]"); // toString
shouldBe("String(MyObject)", "MyObjectAsString"); // toString
shouldBe("MyObject - 0", 1); // toNumber
shouldBe("MyObject.valueOf()", 1); // valueOf

shouldBe("typeof MyConstructor", "object");
constructedObject = new MyConstructor(1);
shouldBe("typeof constructedObject", "object");
shouldBe("constructedObject.value", 1);
shouldBe("myObject instanceof MyObject", true);
shouldBe("(new Object()) instanceof MyObject", false);

shouldThrow("new MyBadConstructor()");

MyObject.nullGetSet = 1;
shouldBe("MyObject.nullGetSet", 1);
shouldThrow("MyObject.nullCall()");
shouldThrow("MyObject.hasPropertyLie");

derived = new Derived();

shouldBe("derived instanceof Derived", true);
shouldBe("derived instanceof Base", true);

// base properties and functions return 1 when called/gotten; derived, 2
shouldBe("derived.baseProtoDup()", 2);
shouldBe("derived.baseProto()", 1);
shouldBe("derived.baseDup", 2);
shouldBe("derived.baseOnly", 1);
shouldBe("derived.protoOnly()", 2);
shouldBe("derived.protoDup", 2);
shouldBe("derived.derivedOnly", 2)

shouldBe("derived.baseHardNull()", undefined)

// base properties throw 1 when set; derived, 2
shouldBe("derived.baseDup = 0", 2);
shouldBe("derived.baseOnly = 0", 1);
shouldBe("derived.derivedOnly = 0", 2)
shouldBe("derived.protoDup = 0", 2);

derived2 = new Derived2();

shouldBe("derived2 instanceof Derived2", true);
shouldBe("derived2 instanceof Derived", true);
shouldBe("derived2 instanceof Base", true);

// base properties and functions return 1 when called/gotten; derived, 2
shouldBe("derived2.baseProtoDup()", 2);
shouldBe("derived2.baseProto()", 1);
shouldBe("derived2.baseDup", 2);
shouldBe("derived2.baseOnly", 1);
shouldBe("derived2.protoOnly()", 2);
shouldBe("derived2.protoDup", 2);
shouldBe("derived2.derivedOnly", 2)

// base properties throw 1 when set; derived, 2
shouldBe("derived2.baseDup = 0", 2);
shouldBe("derived2.baseOnly = 0", 1);
shouldBe("derived2.derivedOnly = 0", 2)
shouldBe("derived2.protoDup = 0", 2);

shouldBe('Object.getOwnPropertyDescriptor(derived, "baseProto")', undefined);
shouldBe('Object.getOwnPropertyDescriptor(derived, "baseProtoDup")', undefined);
var baseDupDescriptor = Object.getOwnPropertyDescriptor(derived, "baseDup");
shouldBe('typeof baseDupDescriptor', "object");
shouldBe('baseDupDescriptor.value', derived.baseDup);
shouldBe('baseDupDescriptor.configurable', true);
shouldBe('baseDupDescriptor.enumerable', false);
var baseOnlyDescriptor = Object.getOwnPropertyDescriptor(derived, "baseOnly");
shouldBe('typeof baseOnlyDescriptor', "object");
shouldBe('baseOnlyDescriptor.value', derived.baseOnly);
shouldBe('baseOnlyDescriptor.configurable', true);
shouldBe('baseOnlyDescriptor.enumerable', false);
shouldBe('Object.getOwnPropertyDescriptor(derived, "protoOnly")', undefined);
var protoDupDescriptor = Object.getOwnPropertyDescriptor(derived, "protoDup");
shouldBe('typeof protoDupDescriptor', "object");
shouldBe('protoDupDescriptor.value', derived.protoDup);
shouldBe('protoDupDescriptor.configurable', true);
shouldBe('protoDupDescriptor.enumerable', false);
var derivedOnlyDescriptor = Object.getOwnPropertyDescriptor(derived, "derivedOnly");
shouldBe('typeof derivedOnlyDescriptor', "object");
shouldBe('derivedOnlyDescriptor.value', derived.derivedOnly);
shouldBe('derivedOnlyDescriptor.configurable', true);
shouldBe('derivedOnlyDescriptor.enumerable', false);

shouldBe("undefined instanceof MyObject", false);
EvilExceptionObject.hasInstance = function f() { return f(); };
EvilExceptionObject.__proto__ = undefined;
shouldThrow("undefined instanceof EvilExceptionObject");
EvilExceptionObject.hasInstance = function () { return true; };
shouldBe("undefined instanceof EvilExceptionObject", true);

EvilExceptionObject.toNumber = function f() { return f(); }
shouldThrow("EvilExceptionObject*5");
EvilExceptionObject.toStringExplicit = function f() { return f(); }
shouldThrow("String(EvilExceptionObject)");

shouldBe("console", "[object Console]");
shouldBe("typeof console.log", "function");

shouldBe("EmptyObject", "[object CallbackObject]");

for (var i = 0; i < 6; ++i)
    PropertyCatchalls.x = i;
shouldBe("PropertyCatchalls.x", 4);

for (var i = 0; i < 6; ++i)
    var x = PropertyCatchalls.x;
shouldBe("x", null);
var make_throw = 'make_throw';
shouldThrow("PropertyCatchalls[make_throw]=1");
make_throw = 0;
shouldThrow("PropertyCatchalls[make_throw]=1");

for (var i = 0; i < 10; ++i) {
    for (var p in PropertyCatchalls) {
        if (p == "x")
            continue;
        shouldBe("p", i % 10);
        break;
    }
}

PropertyCatchalls.__proto__ = { y: 1 };
for (var i = 0; i < 6; ++i)
    var y = PropertyCatchalls.y;
shouldBe("y", null);

var o = { __proto__: PropertyCatchalls };
for (var i = 0; i < 6; ++i)
    var z = PropertyCatchalls.z;
shouldBe("z", null);

if (failed)
    throw "Some tests failed";