// 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.filter description: > Verify arguments on custom @@species construct call info: | 22.2.3.9 %TypedArray%.prototype.filter ( callbackfn [ , thisArg ] ) ... 10. Let A be ? TypedArraySpeciesCreate(O, « captured »). ... 22.2.4.7 TypedArraySpeciesCreate ( exemplar, argumentList ) ... 3. Let constructor be ? SpeciesConstructor(exemplar, defaultConstructor). 4. Return ? TypedArrayCreate(constructor, argumentList). 7.3.20 SpeciesConstructor ( O, defaultConstructor ) ... 5. Let S be ? Get(C, @@species). ... 7. If IsConstructor(S) is true, return S. ... 22.2.4.6 TypedArrayCreate ( constructor, argumentList ) 1. Let newTypedArray be ? Construct(constructor, argumentList). 2. Perform ? ValidateTypedArray(newTypedArray). 3. If argumentList is a List of a single Number, then ... 4. Return newTypedArray. includes: [testTypedArray.js] features: [Symbol.species, TypedArray] ---*/ testWithTypedArrayConstructors(function(TA) { var sample = new TA([40, 42, 42]); var result, ctorThis; sample.constructor = {}; sample.constructor[Symbol.species] = function(count) { result = arguments; ctorThis = this; return new TA(count); }; sample.filter(function(v) { return v === 42; }); assert.sameValue(result.length, 1, "called with 1 argument"); assert.sameValue(result[0], 2, "[0] is the new captured length"); assert( ctorThis instanceof sample.constructor[Symbol.species], "`this` value in the @@species fn is an instance of the function itself" ); }); reportCompare(0, 0);