// 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.copywithin description: > Set values with negative out of bounds end argument. info: | 22.2.3.5 %TypedArray%.prototype.copyWithin (target, start [ , end ] ) %TypedArray%.prototype.copyWithin is a distinct function that implements the same algorithm as Array.prototype.copyWithin as defined in 22.1.3.3 except that the this object's [[ArrayLength]] internal slot is accessed in place of performing a [[Get]] of "length" and the actual copying of values in step 12 must be performed in a manner that preserves the bit-level encoding of the source data. ... 22.1.3.3 Array.prototype.copyWithin (target, start [ , end ] ) ... 7. If end is undefined, let relativeEnd be len; else let relativeEnd be ? ToInteger(end). 8. If relativeEnd < 0, let final be max((len + relativeEnd), 0); else let final be min(relativeEnd, len). ... includes: [compareArray.js, testTypedArray.js] features: [TypedArray] ---*/ testWithTypedArrayConstructors(function(TA) { assert( compareArray( new TA([0, 1, 2, 3]).copyWithin(0, 1, -10), [0, 1, 2, 3] ), '[0, 1, 2, 3].copyWithin(0, 1, -10) -> [0, 1, 2, 3]' ); assert( compareArray( new TA([1, 2, 3, 4, 5]).copyWithin(0, 1, -Infinity), [1, 2, 3, 4, 5] ), '[1, 2, 3, 4, 5].copyWithin(0, 1, -Infinity) -> [1, 2, 3, 4, 5]' ); assert( compareArray( new TA([0, 1, 2, 3]).copyWithin(0, -2, -10), [0, 1, 2, 3] ), '[0, 1, 2, 3].copyWithin(0, -2, -10) -> [0, 1, 2, 3]' ); assert( compareArray( new TA([1, 2, 3, 4, 5]).copyWithin(0, -2, -Infinity), [1, 2, 3, 4, 5] ), '[1, 2, 3, 4, 5].copyWithin(0, -2, -Infinity) -> [1, 2, 3, 4, 5]' ); assert( compareArray( new TA([0, 1, 2, 3]).copyWithin(0, -9, -10), [0, 1, 2, 3] ), '[0, 1, 2, 3].copyWithin(0, -9, -10) -> [0, 1, 2, 3]' ); assert( compareArray( new TA([1, 2, 3, 4, 5]).copyWithin(0, -9, -Infinity), [1, 2, 3, 4, 5] ), '[1, 2, 3, 4, 5].copyWithin(0, -9, -Infinity) -> [1, 2, 3, 4, 5]' ); assert( compareArray( new TA([0, 1, 2, 3]).copyWithin(-3, -2, -10), [0, 1, 2, 3] ), '[0, 1, 2, 3].copyWithin(-3, -2, -10) -> [0, 1, 2, 3]' ); assert( compareArray( new TA([1, 2, 3, 4, 5]).copyWithin(-3, -2, -Infinity), [1, 2, 3, 4, 5] ), '[1, 2, 3, 4, 5].copyWithin(-3, -2, -Infinity) -> [1, 2, 3, 4, 5]' ); assert( compareArray( new TA([0, 1, 2, 3]).copyWithin(-7, -8, -9), [0, 1, 2, 3] ), '[0, 1, 2, 3].copyWithin(-7, -8, -9) -> [0, 1, 2, 3]' ); assert( compareArray( new TA([1, 2, 3, 4, 5]).copyWithin(-7, -8, -Infinity), [1, 2, 3, 4, 5] ), '[1, 2, 3, 4, 5].copyWithin(-7, -8, -Infinity) -> [1, 2, 3, 4, 5]' ); }); reportCompare(0, 0);