| // Copyright (C) 2016 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-%typedarray%.prototype.slice |
| description: > |
| Throws if returned @@species is not a constructor, null or undefined. |
| info: | |
| 22.2.3.24 %TypedArray%.prototype.slice ( start, end ) |
| |
| ... |
| 9. Let A be ? TypedArraySpeciesCreate(O, « count »). |
| ... |
| |
| 22.2.4.7 TypedArraySpeciesCreate ( exemplar, argumentList ) |
| |
| ... |
| 3. Let constructor be ? SpeciesConstructor(exemplar, defaultConstructor). |
| ... |
| |
| 7.3.20 SpeciesConstructor ( O, defaultConstructor ) |
| |
| ... |
| 5. Let S be ? Get(C, @@species). |
| 6. If S is either undefined or null, return defaultConstructor. |
| 7. If IsConstructor(S) is true, return S. |
| 8. Throw a TypeError exception. |
| ... |
| includes: [testTypedArray.js] |
| features: [Symbol.species, TypedArray] |
| ---*/ |
| |
| testWithTypedArrayConstructors(function(TA) { |
| var sample = new TA(2); |
| |
| sample.constructor = {}; |
| |
| sample.constructor[Symbol.species] = 0; |
| assert.throws(TypeError, function() { |
| sample.slice(); |
| }, "0"); |
| |
| sample.constructor[Symbol.species] = "string"; |
| assert.throws(TypeError, function() { |
| sample.slice(); |
| }, "string"); |
| |
| sample.constructor[Symbol.species] = {}; |
| assert.throws(TypeError, function() { |
| sample.slice(); |
| }, "{}"); |
| |
| sample.constructor[Symbol.species] = NaN; |
| assert.throws(TypeError, function() { |
| sample.slice(); |
| }, "NaN"); |
| |
| sample.constructor[Symbol.species] = false; |
| assert.throws(TypeError, function() { |
| sample.slice(); |
| }, "false"); |
| |
| sample.constructor[Symbol.species] = true; |
| assert.throws(TypeError, function() { |
| sample.slice(); |
| }, "true"); |
| }); |