// Copyright (C) 2021 Microsoft. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-array.prototype.findlastindex description: > Return index if predicate return a boolean true value. info: | Array.prototype.findLastIndex ( predicate[ , thisArg ] ) ... 5. Repeat, while k ≥ 0, ... c. Let testResult be ! ToBoolean(? Call(predicate, thisArg, « kValue, 𝔽(k), O »)). d. If testResult is true, return 𝔽(k). ... features: [Symbol, array-find-from-last] ---*/ var arr = ['Shoes', 'Car', 'Bike']; var called = 0; var result = arr.findLastIndex(function() { called++; return true; }); assert.sameValue(result, 2); assert.sameValue(called, 1, 'predicate was called once'); called = 0; result = arr.findLastIndex(function(val) { called++; return val === 'Shoes'; }); assert.sameValue(called, 3, 'predicate was called three times'); assert.sameValue(result, 0); result = arr.findLastIndex(function() { return 'string'; }); assert.sameValue(result, 2, 'coerced string'); result = arr.findLastIndex(function() { return {}; }); assert.sameValue(result, 2, 'coerced object'); result = arr.findLastIndex(function() { return Symbol(''); }); assert.sameValue(result, 2, 'coerced Symbol'); result = arr.findLastIndex(function() { return 1; }); assert.sameValue(result, 2, 'coerced number'); result = arr.findLastIndex(function() { return -1; }); assert.sameValue(result, 2, 'coerced negative number'); reportCompare(0, 0);