| // 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: get constructor on SpeciesConstructor |
| 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 ) |
| |
| 1. Assert: Type(O) is Object. |
| 2. Let C be ? Get(O, "constructor"). |
| 3. If C is undefined, return defaultConstructor. |
| ... |
| includes: [testBigIntTypedArray.js] |
| features: [BigInt, TypedArray] |
| ---*/ |
| |
| testWithBigIntTypedArrayConstructors(function(TA) { |
| var sample = new TA([40n, 41n, 42n, 43n]); |
| var calls = 0; |
| var result; |
| |
| Object.defineProperty(sample, "constructor", { |
| get: function() { |
| calls++; |
| } |
| }); |
| |
| result = sample.slice(); |
| |
| assert.sameValue(calls, 1, "called custom ctor get accessor once"); |
| |
| assert.sameValue( |
| Object.getPrototypeOf(result), |
| Object.getPrototypeOf(sample), |
| "use defaultCtor on an undefined return - getPrototypeOf check" |
| ); |
| assert.sameValue( |
| result.constructor, |
| TA, |
| "use defaultCtor on an undefined return - .constructor check" |
| ); |
| }); |