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+// 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: >
+ target argument is coerced to an integer value.
+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 ] )
+
+ ...
+ 3. Let relativeTarget be ? ToInteger(target).
+ ...
+includes: [compareArray.js, testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+ assert(
+ compareArray(
+ new TA([0n, 1n, 2n, 3n]).copyWithin(undefined, 1),
+ [1n, 2n, 3n, 3n]
+ ),
+ 'undefined value coerced to 0'
+ );
+
+ assert(
+ compareArray(
+ new TA([0n, 1n, 2n, 3n]).copyWithin(false, 1),
+ [1n, 2n, 3n, 3n]
+ ),
+ 'false value coerced to 0'
+ );
+
+ assert(
+ compareArray(
+ new TA([0n, 1n, 2n, 3n]).copyWithin(NaN, 1),
+ [1n, 2n, 3n, 3n]
+ ),
+ 'NaN value coerced to 0'
+ );
+
+ assert(
+ compareArray(
+ new TA([0n, 1n, 2n, 3n]).copyWithin(null, 1),
+ [1n, 2n, 3n, 3n]
+ ),
+ 'null value coerced to 0'
+ );
+
+ assert(
+ compareArray(
+ new TA([0n, 1n, 2n, 3n]).copyWithin(true, 0),
+ [0n, 0n, 1n, 2n]
+ ),
+ 'true value coerced to 1'
+ );
+
+ assert(
+ compareArray(
+ new TA([0n, 1n, 2n, 3n]).copyWithin('1', 0),
+ [0n, 0n, 1n, 2n]
+ ),
+ 'string "1" value coerced to 1'
+ );
+
+ assert(
+ compareArray(
+ new TA([0n, 1n, 2n, 3n]).copyWithin(0.5, 1),
+ [1n, 2n, 3n, 3n]
+ ),
+ '0.5 float value coerced to integer 0'
+ );
+
+ assert(
+ compareArray(
+ new TA([0n, 1n, 2n, 3n]).copyWithin(1.5, 0),
+ [0n, 0n, 1n, 2n]
+ ),
+ '1.5 float value coerced to integer 1'
+ );
+});