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Backed out changeset 35b1a010cb9f (bug 1041586)

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This commit is contained in:
Carsten "Tomcat" Book 2016-04-17 05:45:42 +02:00
parent fac746e08b
commit b96ed92209
3 changed files with 1 additions and 72 deletions
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37
js/src/tests/ecma_6/Array/concat-spreadable-basic.js
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@ -1,37 +0,0 @@
/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/licenses/publicdomain/ */
"use strict";
const x = Object.freeze([1, 2, 3]);
let fakeArray = {
[Symbol.isConcatSpreadable]: true,
length: 2,
0: "hello",
1: "world"
}
assertDeepEq(x.concat(fakeArray), [1, 2, 3, "hello", "world"]);
assertDeepEq(x.concat(fakeArray, fakeArray), [1, 2, 3, "hello", "world", "hello", "world"]);
for (let truthy of [true, 3.41, "abc", Symbol(), {}]) {
let obj = {[Symbol.isConcatSpreadable]: truthy, length: 1, 0: "hey"}
assertDeepEq(x.concat(obj), [1, 2, 3, "hey"]);
}
for (let notTruthy of [null, undefined, false, 0, NaN, ""]) {
let obj = {[Symbol.isConcatSpreadable]: notTruthy, length: 1, 0: "hey"}
assertDeepEq(x.concat(obj), [1, 2, 3, obj]);
}
let array = [5, 4];
assertDeepEq(x.concat(array), [1, 2, 3, 5, 4]);
// Can make arrays non-spreadable
array[Symbol.isConcatSpreadable] = false;
assertDeepEq(x.concat(array), [1, 2, 3, [5, 4]]);
// Explicitly spreadable
array[Symbol.isConcatSpreadable] = true;
assertDeepEq(x.concat(array), [1, 2, 3, 5, 4]);
reportCompare(true, true);

34
js/src/tests/ecma_6/Array/concat-spreadable-primitive.js
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@ -1,34 +0,0 @@
/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/licenses/publicdomain/ */
"use strict";
// Primitive values should never be tried to spread
let primitives = [
10,
false,
Symbol()
// Can't change String.prototype.length
];
for (let value of primitives) {
let prototype = Object.getPrototypeOf(value);
prototype[Symbol.isConcatSpreadable] = true;
Object.defineProperty(prototype, "length", {
configurable: true,
get() {
// Should never invoke length getter
assertEq(true, false);
},
});
let x = [1, 2].concat(value);
assertDeepEq(x, [1, 2, value]);
delete prototype[Symbol.isConcatSpreadable];
delete prototype.length;
prototype.length;
}
reportCompare(true, true);

2
js/src/tests/ecma_6/Array/species.js
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@ -172,7 +172,7 @@ assertEq(b.constructor, Date);
`);
}
test("concat", [], 0, "get:concat,get:constructor,c-get:Symbol(Symbol.species),get:Symbol(Symbol.isConcatSpreadable),get:length,get:0,define:0:1:true:true:true,get:1,define:1:2:true:true:true,get:2,define:2:3:true:true:true,get:3,define:3:4:true:true:true,get:4,define:4:5:true:true:true,set:length:5,");
test("concat", [], 0, "get:concat,get:constructor,c-get:Symbol(Symbol.species),get:length,get:0,define:0:1:true:true:true,get:1,define:1:2:true:true:true,get:2,define:2:3:true:true:true,get:3,define:3:4:true:true:true,get:4,define:4:5:true:true:true,set:length:5,");
test("filter", [x => x % 2], 0, "get:filter,get:length,get:constructor,c-get:Symbol(Symbol.species),get:0,define:0:1:true:true:true,get:1,get:2,define:1:3:true:true:true,get:3,get:4,define:2:5:true:true:true,");
test("map", [x => x * 2], 5, "get:map,get:length,get:constructor,c-get:Symbol(Symbol.species),get:0,define:0:2:true:true:true,get:1,define:1:4:true:true:true,get:2,define:2:6:true:true:true,get:3,define:3:8:true:true:true,get:4,define:4:10:true:true:true,");
test("slice", [], 5, "get:slice,get:length,get:constructor,c-get:Symbol(Symbol.species),get:0,define:0:1:true:true:true,get:1,define:1:2:true:true:true,get:2,define:2:3:true:true:true,get:3,define:3:4:true:true:true,get:4,define:4:5:true:true:true,set:length:5,");