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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
var typedArrayConstructors = [
Uint8Array,
Int8Array,
Uint16Array,
Int16Array,
Uint32Array,
Int32Array,
Uint8ClampedArray,
Float32Array,
Float64Array];
for (var constructor of typedArrayConstructors) {
assertEquals(1, constructor.prototype.findIndex.length);
var a = new constructor([21, 22, 23, 24]);
assertEquals(-1, a.findIndex(function() { return false; }));
assertEquals(-1, a.findIndex(function(val) { return 121 === val; }));
assertEquals(0, a.findIndex(function() { return true; }));
assertEquals(1, a.findIndex(function(val) { return 22 === val; }), undefined);
assertEquals(2, a.findIndex(function(val) { return 23 === val; }), null);
assertEquals(3, a.findIndex(function(val) { return 24 === val; }));
//
// Test predicate is not called when array is empty
//
(function() {
var a = new constructor([]);
var l = -1;
var o = -1;
var v = -1;
var k = -1;
a.findIndex(function(val, key, obj) {
o = obj;
l = obj.length;
v = val;
k = key;
return false;
});
assertEquals(-1, l);
assertEquals(-1, o);
assertEquals(-1, v);
assertEquals(-1, k);
})();
//
// Test predicate is called with correct argumetns
//
(function() {
var a = new constructor([5]);
var l = -1;
var o = -1;
var v = -1;
var k = -1;
var index = a.findIndex(function(val, key, obj) {
o = obj;
l = obj.length;
v = val;
k = key;
return false;
});
assertArrayEquals(a, o);
assertEquals(a.length, l);
assertEquals(5, v);
assertEquals(0, k);
assertEquals(-1, index);
})();
//
// Test predicate is called array.length times
//
(function() {
var a = new constructor([1, 2, 3, 4, 5]);
var l = 0;
a.findIndex(function() {
l++;
return false;
});
assertEquals(a.length, l);
})();
//
// Test array modifications
//
(function() {
a = new constructor([1, 2, 3]);
a.findIndex(function(val, key) { a[key] = ++val; return false; });
assertArrayEquals([2, 3, 4], a);
assertEquals(3, a.length);
})();
//
// Test thisArg
//
(function() {
// Test String as a thisArg
var index = new constructor([1, 2, 3]).findIndex(function(val, key) {
return this.charAt(Number(key)) === String(val);
}, "321");
assertEquals(1, index);
// Test object as a thisArg
var thisArg = {
elementAt: function(key) {
return this[key];
}
};
Array.prototype.push.apply(thisArg, [3, 2, 1]);
index = new constructor([1, 2, 3]).findIndex(function(val, key) {
return this.elementAt(key) === val;
}, thisArg);
assertEquals(1, index);
// Create a new object in each function call when receiver is a
// primitive value. See ECMA-262, Annex C.
a = [];
new constructor([1, 2]).findIndex(function() { a.push(this) }, "");
assertTrue(a[0] !== a[1]);
// Do not create a new object otherwise.
a = [];
new constructor([1, 2]).findIndex(function() { a.push(this) }, {});
assertEquals(a[0], a[1]);
// In strict mode primitive values should not be coerced to an object.
a = [];
new constructor([1, 2]).findIndex(function() { 'use strict'; a.push(this); }, "");
assertEquals("", a[0]);
assertEquals(a[0], a[1]);
})();
// Test exceptions
assertThrows('constructor.prototype.findIndex.call(null, function() { })',
TypeError);
assertThrows('constructor.prototype.findIndex.call(undefined, function() { })',
TypeError);
assertThrows('constructor.prototype.findIndex.apply(null, function() { }, [])',
TypeError);
assertThrows('constructor.prototype.findIndex.apply(undefined, function() { }, [])',
TypeError);
assertThrows('constructor.prototype.findIndex.apply([], function() { }, [])',
TypeError);
assertThrows('constructor.prototype.findIndex.apply({}, function() { }, [])',
TypeError);
assertThrows('constructor.prototype.findIndex.apply("", function() { }, [])',
TypeError);
assertThrows('new constructor([]).findIndex(null)', TypeError);
assertThrows('new constructor([]).findIndex(undefined)', TypeError);
assertThrows('new constructor([]).findIndex(0)', TypeError);
assertThrows('new constructor([]).findIndex(true)', TypeError);
assertThrows('new constructor([]).findIndex(false)', TypeError);
assertThrows('new constructor([]).findIndex("")', TypeError);
assertThrows('new constructor([]).findIndex({})', TypeError);
assertThrows('new constructor([]).findIndex([])', TypeError);
assertThrows('new constructor([]).findIndex(/\d+/)', TypeError);
// Shadowing length doesn't affect findIndex, unlike Array.prototype.findIndex
a = new constructor([1, 2]);
Object.defineProperty(a, 'length', {value: 1});
var x = 0;
assertEquals(a.findIndex(function(elt) { x += elt; return false; }), -1);
assertEquals(x, 3);
assertEquals(Array.prototype.findIndex.call(a,
function(elt) { x += elt; return false; }), -1);
assertEquals(x, 4);
// Detached Operation
var tmp = {
[Symbol.toPrimitive]() {
assertUnreachable("Parameter should not be processed when " +
"array.[[ViewedArrayBuffer]] is detached.");
return 0;
}
};
var array = new constructor([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
%ArrayBufferDetach(array.buffer);
assertThrows(() => array.findIndex(tmp), TypeError);
}
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