| // 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%.from |
| description: > |
| Return a new TypedArray using a custom Constructor |
| includes: [testBigIntTypedArray.js] |
| features: [BigInt, TypedArray] |
| ---*/ |
| |
| testWithBigIntTypedArrayConstructors(function(TA) { |
| var called = 0; |
| |
| var ctor = function(len) { |
| assert.sameValue(arguments.length, 1); |
| called++; |
| return new TA(len); |
| }; |
| |
| var result = TA.from.call(ctor, [42n, 43n, 42n]); |
| assert.sameValue(result.length, 3); |
| assert.sameValue(result[0], 42n); |
| assert.sameValue(result[1], 43n); |
| assert.sameValue(result[2], 42n); |
| assert.sameValue(result.constructor, TA); |
| assert.sameValue(Object.getPrototypeOf(result), TA.prototype); |
| assert.sameValue(called, 1); |
| }); |