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Side by Side Diff: test/mjsunit/harmony/typedarray-species.js

Issue 2096933002: Remove all harmony runtime flags which shipped in M51 (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Review comments Created 4 years, 6 months ago
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1 // Copyright 2015 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Flags: --harmony-species
6
7 // Subclasses of %TypedArray% construct themselves under map, etc
8
9 var typedArrayConstructors = [
10 Uint8Array,
11 Int8Array,
12 Uint16Array,
13 Int16Array,
14 Uint32Array,
15 Int32Array,
16 Uint8ClampedArray,
17 Float32Array,
18 Float64Array
19 ];
20
21 for (let constructor of typedArrayConstructors) {
22 class MyTypedArray extends constructor { }
23 assertEquals(MyTypedArray, new MyTypedArray().map(()=>0).constructor);
24 assertEquals(MyTypedArray, new MyTypedArray().filter(()=>{}).constructor);
25 assertEquals(MyTypedArray, new MyTypedArray().slice().constructor);
26 }
27
28 // Subclasses can override @@species to return the another class
29
30 for (let constructor of typedArrayConstructors) {
31 class MyTypedArray extends constructor { }
32 class MyOtherTypedArray extends constructor {
33 static get [Symbol.species]() { return MyTypedArray; }
34 }
35 assertEquals(MyTypedArray, new MyOtherTypedArray().map(()=>0).constructor);
36 assertEquals(MyTypedArray, new MyOtherTypedArray().filter(()=>{}).constructor) ;
37 assertEquals(MyTypedArray, new MyOtherTypedArray().slice().constructor);
38 }
39
40 // TypedArray too-short and non-TypedArray error checking
41
42 for (let constructor of typedArrayConstructors) {
43 class MyShortTypedArray extends constructor {
44 constructor(length) { super(length - 1); }
45 }
46 assertThrows(() => new MyShortTypedArray(5).map(()=>0), TypeError);
47 assertThrows(() => new MyShortTypedArray(5).filter(()=>true), TypeError);
48 assertThrows(() => new MyShortTypedArray(5).slice(), TypeError);
49
50 class MyNonTypedArray extends constructor {
51 static get [Symbol.species]() { return Array; }
52 }
53 assertThrows(() => new MyNonTypedArray().map(()=>0), TypeError);
54 assertThrows(() => new MyNonTypedArray().filter(()=>{}), TypeError);
55 assertThrows(() => new MyNonTypedArray().slice(), TypeError);
56 }
57
58 // Defaults when constructor or @@species is missing or non-constructor
59
60 for (let constructor of typedArrayConstructors) {
61 class MyDefaultTypedArray extends constructor {
62 static get [Symbol.species]() { return undefined; }
63 }
64 assertEquals(constructor, new MyDefaultTypedArray().map(()=>0).constructor);
65
66 class MyOtherDefaultTypedArray extends constructor { }
67 assertEquals(MyOtherDefaultTypedArray, new MyOtherDefaultTypedArray().map(()=> 0).constructor);
68 MyOtherDefaultTypedArray.prototype.constructor = undefined;
69 assertEquals(constructor, new MyOtherDefaultTypedArray().map(()=>0).constructo r);
70 }
71
72 // Exceptions propagated when getting constructor @@species throws
73
74 class SpeciesError extends Error { }
75 class ConstructorError extends Error { }
76
77 for (let constructor of typedArrayConstructors) {
78 class MyThrowingArray extends constructor {
79 static get [Symbol.species]() { throw new SpeciesError; }
80 }
81 assertThrows(() => new MyThrowingArray().map(()=>{}), SpeciesError);
82 Object.defineProperty(MyThrowingArray.prototype, 'constructor', {
83 get() { throw new ConstructorError; }
84 });
85 assertThrows(() => new MyThrowingArray().map(()=>{}), ConstructorError);
86 }
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