| // 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.reduceright |
| description: > |
| Integer indexed values changed during iteration |
| info: | |
| 22.2.3.21 %TypedArray%.prototype.reduceRight ( callbackfn [ , initialValue ] ) |
| |
| %TypedArray%.prototype.reduceRight is a distinct function that implements the |
| same algorithm as Array.prototype.reduceRight as defined in 22.1.3.20 except |
| that the this object's [[ArrayLength]] internal slot is accessed in place of |
| performing a [[Get]] of "length". |
| |
| 22.1.3.20 Array.prototype.reduceRight ( callbackfn [ , initialValue ] ) |
| includes: [testBigIntTypedArray.js] |
| features: [BigInt, Reflect.set, TypedArray] |
| ---*/ |
| |
| testWithBigIntTypedArrayConstructors(function(TA) { |
| var sample = new TA([42n, 43n, 44n]); |
| var newVal = 0n; |
| |
| sample.reduceRight(function(acc, val, i) { |
| if (i < sample.length - 1) { |
| assert.sameValue( |
| sample[i + 1], newVal - 1n, |
| "get the changed value during the loop" |
| ); |
| assert.sameValue( |
| Reflect.set(sample, 2, 7n), |
| true, |
| "re-set a value for sample[2]" |
| ); |
| } |
| assert.sameValue( |
| Reflect.set(sample, i, newVal), |
| true, |
| "set value during iteration" |
| ); |
| |
| newVal++; |
| }, 0); |
| |
| assert.sameValue(sample[0], 2n, "changed values after iteration [0] == 2"); |
| assert.sameValue(sample[1], 1n, "changed values after iteration [1] == 1"); |
| assert.sameValue(sample[2], 7n, "changed values after iteration [2] == 7"); |
| }); |