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ES5.S15: new tests to clarify Array.concat

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Test of spec language from 15.4.4.4,
5.b.iii.3.b states 'Call the [[DefineOwnProeprty]] internal method of A'
which means that the result of Array.prototype.concat
should return `true` from `hasOwnProperty` for every property
created by `concat`, up to `length`

Set length to 3.
a[0] is set to 0 on a
a[1] is unset
a[2] is set to 2 via a prototype of a

add assertions for values of b[0], b[1], b[2]
add assertions for b.hasOwnProperty('2')

Check with Array.prototype and Object.prototype, separate tests

fix typo in assertion message

test was correct, but assertion message was incorrect
This commit is contained in:
Sam Mikes 2014-08-01 13:43:24 +01:00
parent 595a36b252
commit c650b1a9b0
2 changed files with 128 additions and 0 deletions
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64
test/suite/ch15/15.4/15.4.4/15.4.4.4/S15.4.4.4_A3_T2.js Normal file
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@ -0,0 +1,64 @@
// Copyright 2014 Ecma International. All rights reserved.
// See LICENSE or https://github.com/tc39/test262/blob/master/LICENSE
/*---
info: Array.prototype.concat uses [[Get]] on 'length' to determine array length
es5id: 15.4.4.4_A3_T2
description: >
checking whether non-ownProperties are seen, copied by Array.prototype.concat: Array.prototype[1]
---*/
var a = [0];
if (a.length !== 1) {
$ERROR("expected a.length === 1, actually " + a.length);
}
a.length = 3;
if (a[1] !== undefined) {
$ERROR("expected a[1] === undefined, actually " + a[1]);
}
if (a[2] !== undefined) {
$ERROR("expected a[2] === undefined, actually " + a[2]);
}
Array.prototype[2] = 2;
if (a[1] !== undefined) {
$ERROR("expected a[1] === undefined, actually " + a[1]);
}
if (a[2] !== 2) {
$ERROR("expected a[2] === 2, actually " + a[2]);
}
if (a.hasOwnProperty('1') !== false) {
$ERROR("a.hasOwnProperty('1') === false, actually " + a.hasOwnProperty('1'));
}
if (a.hasOwnProperty('2') !== false) {
$ERROR("a.hasOwnProperty('2') === false, actually " + a.hasOwnProperty('2'));
}
var b = a.concat();
if (b.length !== 3) {
$ERROR("expected b.length === 3, actually " + b.length);
}
if (b[0] !== 0) {
$ERROR("expected b[0] === 0, actually " + b[0]);
}
if (b[1] !== undefined) {
$ERROR("expected b[1] === undefined, actually " + b[1]);
}
if (b[2] !== 2) {
$ERROR("expected b[2] === 2, actually " + b[2]);
}
if (b.hasOwnProperty('1') !== false) {
$ERROR("expected b.hasOwnProperty('1') === false, actually " + b.hasOwnProperty('1'));
}
if (b.hasOwnProperty('2') !== true) {
$ERROR("expected b.hasOwnProperty('2') === true, actually " + b.hasOwnProperty('2'));
}

64
test/suite/ch15/15.4/15.4.4/15.4.4.4/S15.4.4.4_A3_T3.js Normal file
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// Copyright 2014 Ecma International. All rights reserved.
// See LICENSE or https://github.com/tc39/test262/blob/master/LICENSE
/*---
info: Array.prototype.concat uses [[Get]] on 'length' to determine array length
es5id: 15.4.4.4_A3_T3
description: >
checking whether non-ownProperties are seen, copied by Array.prototype.concat: Object.prototype[1]
---*/
var a = [0];
if (a.length !== 1) {
$ERROR("expected a.length === 1, actually " + a.length);
}
a.length = 3;
if (a[1] !== undefined) {
$ERROR("expected a[1] === undefined, actually " + a[1]);
}
if (a[2] !== undefined) {
$ERROR("expected a[2] === undefined, actually " + a[2]);
}
Object.prototype[2] = 2;
if (a[1] !== undefined) {
$ERROR("expected a[1] === undefined, actually " + a[1]);
}
if (a[2] !== 2) {
$ERROR("expected a[2] === 2, actually " + a[2]);
}
if (a.hasOwnProperty('1') !== false) {
$ERROR("a.hasOwnProperty('1') === false, actually " + a.hasOwnProperty('1'));
}
if (a.hasOwnProperty('2') !== false) {
$ERROR("a.hasOwnProperty('2') === false, actually " + a.hasOwnProperty('2'));
}
var b = a.concat();
if (b.length !== 3) {
$ERROR("expected b.length === 3, actually " + b.length);
}
if (b[0] !== 0) {
$ERROR("expected b[0] === 0, actually " + b[0]);
}
if (b[1] !== undefined) {
$ERROR("expected b[1] === undefined, actually " + b[1]);
}
if (b[2] !== 2) {
$ERROR("expected b[2] === 2, actually " + b[2]);
}
if (b.hasOwnProperty('1') !== false) {
$ERROR("expected b.hasOwnProperty('1') === false, actually " + b.hasOwnProperty('1'));
}
if (b.hasOwnProperty('2') !== true) {
$ERROR("expected b.hasOwnProperty('2') === true, actually " + b.hasOwnProperty('2'));
}