| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-array.prototype.copywithin |
| description: > |
| target argument is coerced to an integer value. |
| info: | |
| 22.1.3.3 Array.prototype.copyWithin (target, start [ , end ] ) |
| |
| ... |
| 5. Let relativeTarget be ToInteger(target). |
| ... |
| includes: [compareArray.js] |
| ---*/ |
| |
| assert( |
| compareArray( |
| [0, 1, 2, 3].copyWithin(undefined, 1), [1, 2, 3, 3] |
| ), |
| 'undefined value coerced to 0' |
| ); |
| |
| assert( |
| compareArray( |
| [0, 1, 2, 3].copyWithin(false, 1), [1, 2, 3, 3] |
| ), |
| 'false value coerced to 0' |
| ); |
| |
| assert( |
| compareArray( |
| [0, 1, 2, 3].copyWithin(NaN, 1), [1, 2, 3, 3] |
| ), |
| 'NaN value coerced to 0' |
| ); |
| |
| assert( |
| compareArray( |
| [0, 1, 2, 3].copyWithin(null, 1), [1, 2, 3, 3] |
| ), |
| 'null value coerced to 0' |
| ); |
| |
| |
| assert( |
| compareArray( |
| [0, 1, 2, 3].copyWithin(true, 0), [0, 0, 1, 2] |
| ), |
| 'true value coerced to 1' |
| ); |
| |
| |
| assert( |
| compareArray( |
| [0, 1, 2, 3].copyWithin('1', 0), [0, 0, 1, 2] |
| ), |
| 'string "1" value coerced to 1' |
| ); |
| |
| assert( |
| compareArray( |
| [0, 1, 2, 3].copyWithin(0.5, 1), [1, 2, 3, 3] |
| ), |
| '0.5 float value coerced to integer 0' |
| ); |
| |
| assert( |
| compareArray( |
| [0, 1, 2, 3].copyWithin(1.5, 0), [0, 0, 1, 2] |
| ), |
| '1.5 float value coerced to integer 1' |
| ); |