v8/test/mjsunit/harmony/reflect-construct.js
ishell dddcd0ac17 Fix Function subclassing.
Function subclasses did not have function properties installed (name, prototype, etc.).
Now when an instance of a Function subclass is created it gets initial map that corresponds
to the language mode of the function body. The language mode dependent maps are cached as
special transitions on initial map of the subclass constructor.

BUG=v8:4597, v8:3101, v8:3330
LOG=Y

Review URL: https://codereview.chromium.org/1510753005

Cr-Commit-Position: refs/heads/master@{#32764}
2015-12-10 17:28:08 +00:00

382 lines
12 KiB
JavaScript

// 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.
// Flags: --harmony-reflect
(function testReflectConstructArity() {
assertEquals(2, Reflect.construct.length);
})();
(function testReflectConstructNonConstructor() {
assertThrows(function() {
new Reflect.construct(function(){}, []);
}, TypeError);
})();
(function testReflectConstructBasic() {
function Constructor() { "use strict"; }
assertInstanceof(Reflect.construct(Constructor, []), Constructor);
})();
(function testReflectConstructBasicSloppy() {
function Constructor() {}
assertInstanceof(Reflect.construct(Constructor, []), Constructor);
})();
(function testReflectConstructReturnSomethingElseStrict() {
var R = {};
function Constructor() { "use strict"; return R; }
assertSame(R, Reflect.construct(Constructor, []));
})();
(function testReflectConstructReturnSomethingElseSloppy() {
var R = {};
function Constructor() { return R; }
assertSame(R, Reflect.construct(Constructor, []));
})();
(function testReflectConstructNewTargetStrict() {
"use strict";
function Constructor() { this[9] = 1; }
var O = Reflect.construct(Constructor, [], Array);
assertEquals(1, O[9]);
// Ordinary object with Array.prototype --- no exotic Array magic
assertFalse(Array.isArray(O));
assertEquals(0, O.length);
assertSame(Array.prototype, Object.getPrototypeOf(O));
})();
(function testReflectConstructNewTargetSloppy() {
function Constructor() { this[9] = 1; }
var O = Reflect.construct(Constructor, [], Array);
assertEquals(1, O[9]);
// Ordinary object with Array.prototype --- no exotic Array magic
assertFalse(Array.isArray(O));
assertEquals(0, O.length);
assertSame(Array.prototype, Object.getPrototypeOf(O));
})();
(function testReflectConstructNewTargetStrict2() {
"use strict";
function Constructor() { this[9] = 1; }
Constructor.prototype.add = function(x) {
this[this.length] = x; return this;
}
var O = Reflect.construct(Array, [1, 2, 3], Constructor);
// Exotic Array object with Constructor.prototype
assertTrue(Array.isArray(O));
assertSame(Constructor.prototype, Object.getPrototypeOf(O));
assertFalse(O instanceof Array);
assertEquals(3, O.length);
assertEquals(undefined, O[9]);
assertSame(O, O.add(4));
assertEquals(4, O.length);
assertEquals(4, O[3]);
})();
(function testReflectConstructNewTargetSloppy2() {
function Constructor() { this[9] = 1; }
Constructor.prototype.add = function(x) {
this[this.length] = x; return this;
}
var O = Reflect.construct(Array, [1, 2, 3], Constructor);
// Exotic Array object with Constructor.prototype
assertTrue(Array.isArray(O));
assertSame(Constructor.prototype, Object.getPrototypeOf(O));
assertFalse(O instanceof Array);
assertEquals(3, O.length);
assertEquals(undefined, O[9]);
assertSame(O, O.add(4));
assertEquals(4, O.length);
assertEquals(4, O[3]);
})();
(function testReflectConstructNewTargetStrict3() {
"use strict";
function A() {}
function B() {}
var O = Reflect.construct(A, [], B);
// TODO(caitp): bug: newTarget prototype is not used if it is not
// explicitly set.
//assertSame(B.prototype, Object.getPrototypeOf(O));
})();
(function testReflectConstructNewTargetSloppy3() {
function A() {}
function B() {}
var O = Reflect.construct(A, [], B);
// TODO(caitp): bug: newTarget prototype is not used if it is not
// explicitly set.
//assertSame(B.prototype, Object.getPrototypeOf(O));
})();
(function testAppliedArgumentsLength() {
function lengthStrict() { 'use strict'; this.a = arguments.length; }
function lengthSloppy() { this.a = arguments.length; }
assertEquals(0, Reflect.construct(lengthStrict, []).a);
assertEquals(0, Reflect.construct(lengthSloppy, []).a);
assertEquals(0, Reflect.construct(lengthStrict, {}).a);
assertEquals(0, Reflect.construct(lengthSloppy, {}).a);
for (var i = 0; i < 256; ++i) {
assertEquals(i, Reflect.construct(lengthStrict, new Array(i)).a);
assertEquals(i, Reflect.construct(lengthSloppy, new Array(i)).a);
assertEquals(i, Reflect.construct(lengthStrict, { length: i }).a);
assertEquals(i, Reflect.construct(lengthSloppy, { length: i }).a);
}
})();
(function testAppliedArgumentsLengthThrows() {
function noopStrict() { 'use strict'; }
function noopSloppy() { }
function MyError() {}
var argsList = {};
Object.defineProperty(argsList, "length", {
get: function() { throw new MyError(); }
});
assertThrows(function() {
Reflect.construct(noopStrict, argsList);
}, MyError);
assertThrows(function() {
Reflect.construct(noopSloppy, argsList);
}, MyError);
})();
(function testAppliedArgumentsElementThrows() {
function noopStrict() { 'use strict'; }
function noopSloppy() { }
function MyError() {}
var argsList = { length: 1 };
Object.defineProperty(argsList, "0", {
get: function() { throw new MyError(); }
});
assertThrows(function() {
Reflect.construct(noopStrict, argsList);
}, MyError);
assertThrows(function() {
Reflect.construct(noopSloppy, argsList);
}, MyError);
})();
(function testAppliedNonFunctionStrict() {
'use strict';
assertThrows(function() { Reflect.construct(void 0, []); }, TypeError);
assertThrows(function() { Reflect.construct(null, []); }, TypeError);
assertThrows(function() { Reflect.construct(123, []); }, TypeError);
assertThrows(function() { Reflect.construct("str", []); }, TypeError);
assertThrows(function() { Reflect.construct(Symbol("x"), []); }, TypeError);
assertThrows(function() { Reflect.construct(/123/, []); }, TypeError);
assertThrows(function() { Reflect.construct(NaN, []); }, TypeError);
assertThrows(function() { Reflect.construct({}, []); }, TypeError);
assertThrows(function() { Reflect.construct([], []); }, TypeError);
})();
(function testAppliedNonFunctionSloppy() {
assertThrows(function() { Reflect.construct(void 0, []); }, TypeError);
assertThrows(function() { Reflect.construct(null, []); }, TypeError);
assertThrows(function() { Reflect.construct(123, []); }, TypeError);
assertThrows(function() { Reflect.construct("str", []); }, TypeError);
assertThrows(function() { Reflect.construct(Symbol("x"), []); }, TypeError);
assertThrows(function() { Reflect.construct(/123/, []); }, TypeError);
assertThrows(function() { Reflect.construct(NaN, []); }, TypeError);
assertThrows(function() { Reflect.construct({}, []); }, TypeError);
assertThrows(function() { Reflect.construct([], []); }, TypeError);
})();
(function testAppliedArgumentsNonList() {
function noopStrict() { 'use strict'; }
function noopSloppy() {}
assertThrows(function() { Reflect.construct(noopStrict, null); }, TypeError);
assertThrows(function() { Reflect.construct(noopSloppy, null); }, TypeError);
assertThrows(function() { Reflect.construct(noopStrict, 1); }, TypeError);
assertThrows(function() { Reflect.construct(noopSloppy, 1); }, TypeError);
assertThrows(function() { Reflect.construct(noopStrict, "BAD"); }, TypeError);
assertThrows(function() { Reflect.construct(noopSloppy, "BAD"); }, TypeError);
assertThrows(function() { Reflect.construct(noopStrict, true); }, TypeError);
assertThrows(function() { Reflect.construct(noopSloppy, true); }, TypeError);
var sym = Symbol("x");
assertThrows(function() { Reflect.construct(noopStrict, sym); }, TypeError);
assertThrows(function() { Reflect.construct(noopSloppy, sym); }, TypeError);
})();
(function testAppliedArgumentValue() {
function firstStrict(a) { 'use strict'; this.a = a; }
function firstSloppy(a) { this.a = a; }
function lastStrict(a) {
'use strict'; this.a = arguments[arguments.length - 1]; }
function lastSloppy(a) { this.a = arguments[arguments.length - 1]; }
function sumStrict() {
'use strict';
var sum = arguments[0];
for (var i = 1; i < arguments.length; ++i) {
sum += arguments[i];
}
this.a = sum;
}
function sumSloppy() {
var sum = arguments[0];
for (var i = 1; i < arguments.length; ++i) {
sum += arguments[i];
}
this.a = sum;
}
assertEquals("OK!", Reflect.construct(firstStrict, ["OK!"]).a);
assertEquals("OK!", Reflect.construct(firstSloppy, ["OK!"]).a);
assertEquals("OK!", Reflect.construct(firstStrict,
{ 0: "OK!", length: 1 }).a);
assertEquals("OK!", Reflect.construct(firstSloppy,
{ 0: "OK!", length: 1 }).a);
assertEquals("OK!", Reflect.construct(lastStrict,
[0, 1, 2, 3, 4, 5, 6, 7, 8, "OK!"]).a);
assertEquals("OK!", Reflect.construct(lastSloppy,
[0, 1, 2, 3, 4, 5, 6, 7, 8, "OK!"]).a);
assertEquals("OK!", Reflect.construct(lastStrict,
{ 9: "OK!", length: 10 }).a);
assertEquals("OK!", Reflect.construct(lastSloppy,
{ 9: "OK!", length: 10 }).a);
assertEquals("TEST", Reflect.construct(sumStrict,
["T", "E", "S", "T"]).a);
assertEquals("TEST!!", Reflect.construct(sumStrict,
["T", "E", "S", "T", "!", "!"]).a);
assertEquals(10, Reflect.construct(sumStrict,
{ 0: 1, 1: 2, 2: 3, 3: 4, length: 4 }).a);
assertEquals("TEST", Reflect.construct(sumSloppy,
["T", "E", "S", "T"]).a);
assertEquals("TEST!!", Reflect.construct(sumSloppy,
["T", "E", "S", "T", "!", "!"]).a);
assertEquals(10, Reflect.construct(sumSloppy,
{ 0: 1, 1: 2, 2: 3, 3: 4, length: 4 }).a);
})();
(function() {
function* f() { yield 1; yield 2; }
function* g() { yield 3; yield 4; }
var o = Reflect.construct(f, [], g);
assertEquals([1, 2], [...o]);
assertTrue(o.__proto__ === g.prototype);
assertTrue(o.__proto__ !== f.prototype);
})();
(function () {
var realm1 = Realm.create();
var realm2 = Realm.create();
var well_known_intrinsic_constructors = [
"Array",
"ArrayBuffer",
"Boolean",
["DataView", [new ArrayBuffer()]],
"Date",
"Error",
"EvalError",
"Float32Array",
"Float64Array",
["Function", ["return 153;"]],
["Function", ["'use strict'; return 153;"]],
["Function", ["'use strong'; return 153;"]],
["((function*(){}).constructor)", ["yield 153;"]], // GeneratorFunction
["((function*(){}).constructor)", ["'use strict'; yield 153;"]],
["((function*(){}).constructor)", ["'use strong'; yield 153;"]],
"Int8Array",
"Int16Array",
"Int32Array",
"Map",
"Number",
"Object",
["Promise", [(resolve, reject)=>{}]],
"RangeError",
"ReferenceError",
"RegExp",
"Set",
"String",
"SyntaxError",
// %TypedArray%?
"TypeError",
"Uint8Array",
"Uint8ClampedArray",
"Uint16Array",
"Uint32Array",
"URIError",
"WeakMap",
"WeakSet"
];
function getname(v) {
return typeof v === "string" ? v : v[0];
}
function getargs(v) {
return typeof v === "string" ? [] : v[1];
}
function test_intrinsic_prototype(name) {
var own = Realm.eval(realm1, name);
// Ensure that constructor.prototype is non-writable, non-configurable.
var desc = Object.getOwnPropertyDescriptor(own, "prototype");
assertFalse(desc.configurable, name);
assertFalse(desc.writable, name);
}
for (var intrinsic of well_known_intrinsic_constructors) {
test_intrinsic_prototype(getname(intrinsic));
}
function function_with_non_instance_prototype(realm) {
var f = Realm.eval(realm, "(function(){})");
f.prototype = 1;
return f;
}
function test_intrinsic_default(realm, name, args, convert) {
var own = Realm.eval(realm1, name);
var other = Realm.eval(realm, name);
var o = Reflect.construct(
convert(own), args, function_with_non_instance_prototype(realm));
// Ensure the intrisicDefaultProto is fetched from the correct realm.
assertTrue(realm == realm1 || o.__proto__ !== own.prototype, [...arguments]);
assertTrue(o.__proto__ === other.prototype, [...arguments]);
}
function test_all(test, convert) {
for (var intrinsic of well_known_intrinsic_constructors) {
for (var realm of [realm1, realm2]) {
test(realm, getname(intrinsic), getargs(intrinsic), convert);
}
}
}
test_all(test_intrinsic_default, (v)=>v);
test_all(test_intrinsic_default,
(v)=>{ "use strict"; return class extends v {}});
})();