diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-9-11.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-9-11.js | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-9-11.js b/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-9-11.js new file mode 100644 index 0000000000..9a5dab55a8 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-9-11.js @@ -0,0 +1,36 @@ +// 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.map +description: > + Array.prototype.map - returns an empty array if 'length' is 0 + (subclassed Array, length overridden with obj w/o valueOf + (toString)) +---*/ + +function Foo() {} +Foo.prototype = [1, 2, 3]; + +var f = new Foo(); + +var o = { + toString: function() { + return '0'; + } +}; +f.length = o; + +// objects inherit the default valueOf method of the Object object; +// that simply returns the 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. + +function cb() {} +var a = Array.prototype.map.call(f, cb); + +assert(Array.isArray(a), 'Array.isArray(a) !== true'); +assert.sameValue(a.length, 0, 'a.length'); + +reportCompare(0, 0); |