mirror of https://github.com/tc39/test262.git
124 lines
3.0 KiB
JavaScript
124 lines
3.0 KiB
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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(function testDoubleElements() {
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function f(src) { return {...src}; }
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var src = [1.5];
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src[0] = 1;
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// Uninitialized
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assertEquals({ 0: 1 }, f(src));
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src[0] = 1.3;
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// Monomorphic
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assertEquals({ 0: 1.3 }, f(src));
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})();
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(function testInObjectProperties() {
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function f(src) { return {...src}; }
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function C() { this.foo = "foo"; }
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var src;
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for (var i = 0; i < 10; ++i) {
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src = new C();
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}
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// Uninitialized
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assertEquals({ foo: "foo" }, f(src));
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// Monomorphic
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assertEquals({ foo: "foo" }, f(src));
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})();
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(function testInObjectProperties2() {
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function f(src) { return {...src}; }
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function C() {
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this.foo = "foo";
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this.p0 = "0";
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this.p1 = "1";
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this.p2 = "2";
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this.p3 = "3";
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}
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var src;
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for (var i = 0; i < 10; ++i) {
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src = new C();
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}
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// Uninitialized
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assertEquals({ foo: "foo", p0: "0", p1: "1", p2: "2", p3: "3" }, f(src));
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// Monomorphic
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assertEquals({ foo: "foo", p0: "0", p1: "1", p2: "2", p3: "3" }, f(src));
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})();
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(function testPolymorphicToMegamorphic() {
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function f(src) { return {...src}; }
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function C1() {
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this.foo = "foo";
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this.p0 = "0";
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this.p1 = "1";
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this.p2 = "2";
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this.p3 = "3";
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}
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function C2() {
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this.p0 = "0";
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this.p1 = "1";
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this[0] = 0;
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}
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function C3() {
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this.x = 774;
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this.y = 663;
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this.rgb = 0xFF00FF;
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}
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function C4() {
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this.qqq = {};
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this.v_1 = [];
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this.name = "C4";
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this.constructor = C4;
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}
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// Uninitialized
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assertEquals({ foo: "foo", p0: "0", p1: "1", p2: "2", p3: "3" }, f(new C1()));
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// Monomorphic
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assertEquals({ foo: "foo", p0: "0", p1: "1", p2: "2", p3: "3" }, f(new C1()));
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// Polymorphic (2)
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assertEquals({ 0: 0, p0: "0", p1: "1" }, f(new C2()));
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assertEquals({ 0: 0, p0: "0", p1: "1" }, f(new C2()));
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// Polymorphic (3)
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assertEquals({ x: 774, y: 663, rgb: 0xFF00FF }, f(new C3()));
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assertEquals({ x: 774, y: 663, rgb: 0xFF00FF }, f(new C3()));
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// Polymorphic (4)
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assertEquals({ qqq: {}, v_1: [], name: "C4", constructor: C4 }, f(new C4()));
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assertEquals({ qqq: {}, v_1: [], name: "C4", constructor: C4 }, f(new C4()));
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// Megamorphic
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assertEquals({ boop: 1 }, f({ boop: 1 }));
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})();
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// There are 2 paths in CloneObjectIC's handler which need to handle double
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// fields specially --- in object properties, and copying the property array.
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function testMutableInlineProperties() {
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function inobject() { "use strict"; this.x = 1.1; }
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const src = new inobject();
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const x0 = src.x;
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const clone = { ...src, x: x0 + 1 };
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assertEquals(x0, src.x);
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assertEquals({ x: 2.1 }, clone);
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}
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testMutableInlineProperties()
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function testMutableOutOfLineProperties() {
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const src = { a: 1, b: 2, c: 3 };
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src.x = 2.3;
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const x0 = src.x;
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const clone = { ...src, x: x0 + 1 };
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assertEquals(x0, src.x);
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assertEquals({ a: 1, b: 2, c: 3, x: 3.3 }, clone);
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}
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testMutableOutOfLineProperties();
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