// 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.find description: > Return undefined if predicate always returns a boolean false value. info: | 22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] ) ... 8. Repeat, while k < len ... d. Let testResult be ToBoolean(Call(predicate, T, «kValue, k, O»)). ... 9. Return undefined. features: [Symbol] ---*/ var arr = ['Shoes', 'Car', 'Bike']; var called = 0; var result = arr.find(function(val) { called++; return false; }); assert.sameValue(called, 3, 'predicate was called three times'); assert.sameValue(result, undefined); result = arr.find(function(val) { return ''; }); assert.sameValue(result, undefined, 'coerced string'); result = arr.find(function(val) { return undefined; }); assert.sameValue(result, undefined, 'coerced undefined'); result = arr.find(function(val) { return null; }); assert.sameValue(result, undefined, 'coerced null'); result = arr.find(function(val) { return 0; }); assert.sameValue(result, undefined, 'coerced 0'); result = arr.find(function(val) { return NaN; }); assert.sameValue(result, undefined, 'coerced NaN'); reportCompare(0, 0);