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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-3-19.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-3-19.js | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-3-19.js b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-3-19.js new file mode 100644 index 0000000000..fd1ee62626 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-3-19.js @@ -0,0 +1,32 @@ +// Copyright (c) 2012 Ecma International. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-array.prototype.lastindexof +description: > + Array.prototype.lastIndexOf - value of 'length' is an Object which + has an own toString method +---*/ + +// objects inherit the default valueOf() method from Object +// that simply returns itself. Since the default valueOf() method +// does not return a primitive value, ES next tries to convert the object +// to a number by calling its toString() method and converting the +// resulting string to a number. + +var targetObj = this; +var obj = { + 1: targetObj, + 2: 2, + + length: { + toString: function() { + return '2'; + } + } +}; + +assert.sameValue(Array.prototype.lastIndexOf.call(obj, targetObj), 1, 'Array.prototype.lastIndexOf.call(obj, targetObj)'); +assert.sameValue(Array.prototype.lastIndexOf.call(obj, 2), -1, 'Array.prototype.lastIndexOf.call(obj, 2)'); + +reportCompare(0, 0); |