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Diffstat (limited to 'js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-11.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-11.js | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-11.js b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-11.js new file mode 100644 index 0000000000..e1eb427683 --- /dev/null +++ b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-11.js @@ -0,0 +1,46 @@ +// Copyright (c) 2012 Ecma International. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +info: | + Step 4 of defineProperty calls the [[DefineOwnProperty]] internal method + of O to define the property. Step 7b of [[DefineOwnProperty]] rejects if + current.[[Enumerable]] and desc.[[Enumerable]] are the boolean negations + of each other. +es5id: 15.2.3.6-4-11 +description: > + Object.defineProperty throws TypeError when changing + [[Enumerable]] from true to false on non-configurable accessor + properties +---*/ + +var o = {}; + +// create an accessor property; all other attributes default to false. +// dummy getter +var getter = function() { + return 1; +} +var d1 = { + get: getter, + enumerable: true, + configurable: false +}; +Object.defineProperty(o, "foo", d1); + +// now, setting enumerable to true should fail, since [[Configurable]] +// on the original property will be false. +var desc = { + get: getter, + enumerable: false +}; +assert.throws(TypeError, function() { + Object.defineProperty(o, "foo", desc); +}); +// the property should remain unchanged. +var d2 = Object.getOwnPropertyDescriptor(o, "foo"); +assert.sameValue(d2.get, getter, 'd2.get'); +assert.sameValue(d2.enumerable, true, 'd2.enumerable'); +assert.sameValue(d2.configurable, false, 'd2.configurable'); + +reportCompare(0, 0); |