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Test to ensure correct behaviour of Object.defineProperty

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty({}, 'foo', {value:1}), 'foo')) is JSON.stringify({value: 1, writable: false, enumerable: false, configurable: false})
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty({}, 'foo', {}), 'foo')) is JSON.stringify({writable: false, enumerable: false, configurable: false})
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty({}, 'foo', {get:undefined}), 'foo')) is JSON.stringify({enumerable: false, configurable: false})
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty({}, 'foo', {value:1, writable: false}), 'foo')) is JSON.stringify({value: 1, writable: false, enumerable: false, configurable: false})
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty({}, 'foo', {value:1, writable: true}), 'foo')) is JSON.stringify({value: 1, writable: true, enumerable: false, configurable: false})
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty({}, 'foo', {value:1, enumerable: false}), 'foo')) is JSON.stringify({value: 1, writable: false, enumerable: false, configurable: false})
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty({}, 'foo', {value:1, enumerable: true}), 'foo')) is JSON.stringify({value: 1, writable: false, enumerable: true, configurable: false})
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty({}, 'foo', {value:1, configurable: false}), 'foo')) is JSON.stringify({value: 1, writable: false, enumerable: false, configurable: false})
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty({}, 'foo', {value:1, configurable: true}), 'foo')) is JSON.stringify({value: 1, writable: false, enumerable: false, configurable: true})
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty([1,2,3], 'foo', {value:1, configurable: true}), 'foo')) is JSON.stringify({value: 1, writable: false, enumerable: false, configurable: true})
PASS Object.getOwnPropertyDescriptor(Object.defineProperty([1,2,3], '1', {value:'foo', configurable: true}), '1').value is 'foo'
PASS a=[1,2,3], Object.defineProperty(a, '1', {value:'foo', configurable: true}), a[1] is 'foo'
PASS Object.getOwnPropertyDescriptor(Object.defineProperty([1,2,3], '1', {get:getter, configurable: true}), '1').get is getter
PASS Object.defineProperty([1,2,3], '1', {get:getter, configurable: true})[1] threw exception called getter.
PASS Object.defineProperty() threw exception TypeError: Object.defineProperty called on non-object.
PASS Object.defineProperty(null) threw exception TypeError: Object.defineProperty called on non-object.
PASS Object.defineProperty('foo') threw exception TypeError: Object.defineProperty called on non-object.
PASS Object.defineProperty({}) threw exception TypeError: Property description must be an object: undefined.
PASS Object.defineProperty({}, 'foo') threw exception TypeError: Property description must be an object: undefined.
PASS Object.defineProperty({}, 'foo', {get:undefined, value:true}).foo threw exception TypeError: Invalid property descriptor. Cannot both specify accessors and a value or writable attribute, #<Object>.
PASS Object.defineProperty({get foo() { return true; } }, 'foo', {configurable:false}).foo is true
PASS Object.defineProperty(createUnconfigurableProperty({}, 'foo'), 'foo', {configurable: true}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(createUnconfigurableProperty({}, 'foo'), 'foo', {writable: true}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(createUnconfigurableProperty({}, 'foo'), 'foo', {enumerable: true}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(createUnconfigurableProperty({}, 'foo', false, true), 'foo', {enumerable: false}), 'foo' threw exception TypeError: Cannot redefine property: foo.
PASS JSON.stringify(Object.getOwnPropertyDescriptor(Object.defineProperty(createUnconfigurableProperty({}, 'foo', true), 'foo', {writable: false}), 'foo')) is JSON.stringify({value: 1, writable: false, enumerable: false, configurable: false})
PASS Object.defineProperty({}, 'foo', {value:1, get: function(){}}) threw exception TypeError: Invalid property descriptor. Cannot both specify accessors and a value or writable attribute, #<Object>.
PASS Object.defineProperty({}, 'foo', {value:1, set: function(){}}) threw exception TypeError: Invalid property descriptor. Cannot both specify accessors and a value or writable attribute, #<Object>.
PASS Object.defineProperty({}, 'foo', {writable:true, get: function(){}}) threw exception TypeError: Invalid property descriptor. Cannot both specify accessors and a value or writable attribute, #<Object>.
PASS Object.defineProperty({}, 'foo', {writable:true, set: function(){}}) threw exception TypeError: Invalid property descriptor. Cannot both specify accessors and a value or writable attribute, #<Object>.
PASS Object.defineProperty({}, 'foo', {get: null}) threw exception TypeError: Getter must be a function: null.
PASS Object.defineProperty({}, 'foo', {set: null}) threw exception TypeError: Setter must be a function: null.
PASS Object.defineProperty({}, 'foo', {set: setter}).foo='test' threw exception called setter.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {set: setter}), 'foo', {set: setter1}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {set: setter}), 'foo', {get: getter1}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {set: setter}), 'foo', {value: 1}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {set: setter, configurable: true}), 'foo', {set: setter1}).foo='test' threw exception called setter1.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {set: setter, configurable: true}), 'foo', {get: getter1}).foo threw exception called getter1.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {set: setter, configurable: true}), 'foo', {value: true}).foo is true
PASS 'foo' in Object.defineProperty(Object.defineProperty({}, 'foo', {set: setter, configurable: true}), 'foo', {writable: true}) is true
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {set: setter, configurable: true}), 'foo', {writable: true}).foo is undefined.
PASS Object.defineProperty({}, 'foo', {get: getter}).foo threw exception called getter.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: getter}), 'foo', {get: getter1}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: getter}), 'foo', {set: setter1}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: getter, configurable: true}), 'foo', {get: getter1}).foo threw exception called getter1.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: getter, configurable: true}), 'foo', {set: setter1}).foo='test' threw exception called setter1.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: getter, configurable: true}), 'foo', {value: true}).foo is true
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: getter, configurable: true}), 'foo', {writable: true}).foo is undefined.
PASS 'foo' in Object.defineProperty(Object.defineProperty({}, 'foo', {get: getter, configurable: true}), 'foo', {writable: true}) is true
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1}), 'foo', {set: setter1}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1, configurable: true}), 'foo', {set: setter1}).foo='test' threw exception called setter1.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1}), 'foo', {get: getter1}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1}), 'foo', {set: setter1}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1, configurable: true}), 'foo', {get: getter1}).foo threw exception called getter1.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1, configurable: true}), 'foo', {set: setter1}).foo='test' threw exception called setter1.
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1, configurable: true, writable: false}), 'foo', {value: 2, configurable: true, writable: true}).foo is 2
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1, configurable: true, writable: false}), 'foo', {value: 2, configurable: true, writable: false}).foo is 2
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1, configurable: false, writable: false}), 'foo', {value: 1, configurable: false, writable: false}).foo is 1
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return 1; }, configurable: true, enumerable: true}), 'foo', {get: function() { return 2; }, configurable: true, enumerable: false}).foo is 2
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return 1; }, configurable: true, enumerable: false}), 'foo', {get: function() { return 2; }, configurable: true, enumerable: false}).foo is 2
PASS var result = false; var o = Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return 1; }, configurable: true, enumerable: true}), 'foo', {get: function() { return 2; }, configurable: true, enumerable: false}); for (x in o) result = true; result is false
PASS var result = false; var o = Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return 1; }, configurable: true, enumerable: false}), 'foo', {get: function() { return 2; }, configurable: true, enumerable: true}); for (x in o) result = true; result is true
PASS var o = Object.defineProperty({}, 'foo', {get: function() { return 1; }, configurable: true}); delete o.foo; o.foo is undefined.
PASS var o = Object.defineProperty({}, 'foo', {get: function() { return 1; }, configurable: false}); delete o.foo; o.foo is 1
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return 1; }, configurable: true}), 'foo', {value:2}).foo is 2
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return 1; }, configurable: false}), 'foo', {value:2}).foo threw exception TypeError: Cannot redefine property: foo.
PASS var o = Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return 1; }, configurable: true}), 'foo', {value:2}); o.foo = 3; o.foo is 2
PASS Object.defineProperty(Object.defineProperty({}, 'foo', {value: 1}), 'foo', {value:2, configurable: true}) threw exception TypeError: Cannot redefine property: foo.
PASS Object.defineProperty(Object.defineProperty([], 'foo', {value: 1}), 'foo', {value:2, configurable: true}) threw exception TypeError: Cannot redefine property: foo.
PASS var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}); o.foo is 42
PASS var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}); o.foo = 42; o.result; is 42
PASS var o = Object.defineProperty({}, 'foo', {get:undefined, set:function(x){this.result = x;}}); o.foo is undefined
PASS var o = Object.defineProperty({}, 'foo', {get:undefined, set:function(x){this.result = x;}}); o.foo = 42; o.result; is 42
PASS var o = Object.defineProperty({}, 'foo', {set:function(x){this.result = x;}}); o.foo is undefined
PASS var o = Object.defineProperty({}, 'foo', {set:function(x){this.result = x;}}); o.foo = 42; o.result; is 42
PASS var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}, set:undefined}); o.foo is 42
PASS var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}, set:undefined}); o.foo = 42; o.result; is undefined
PASS var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}}); o.foo is 42
PASS var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}}); o.foo = 42; o.result; is undefined
PASS var o = Object.defineProperty({}, 'foo', {get:undefined, set:undefined}); o.foo is undefined
PASS var o = Object.defineProperty({}, 'foo', {get:undefined, set:undefined}); o.foo = 42; o.result; is undefined
PASS var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:function(){return 13;}}); o.foo is 13
PASS var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:function(){return 13;}}); o.foo = 42; o.result; is 42
PASS var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:undefined}); o.foo is undefined
PASS var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:undefined}); o.foo = 42; o.result; is 42
PASS var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:function(){this.result = 13;}}); o.foo is 42
PASS var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:function(){this.result = 13;}}); o.foo = 42; o.result; is 13
PASS var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:undefined}); o.foo is 42
PASS var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:undefined}); o.foo = 42; o.result; is undefined
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}); o.foo is 42
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}); o.foo = 42; o.result; is 42
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:undefined, set:function(x){this.result = x;}}); o.foo is undefined
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:undefined, set:function(x){this.result = x;}}); o.foo = 42; o.result; is 42
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {set:function(x){this.result = x;}}); o.foo is undefined
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {set:function(x){this.result = x;}}); o.foo = 42; o.result; is 42
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}, set:undefined}); o.foo is 42
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}, set:undefined}); o.foo = 42; o.result; threw exception TypeError: Cannot set property foo of #<Object> which has only a getter.
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}}); o.foo is 42
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:function(){return 42;}}); o.foo = 42; o.result; threw exception TypeError: Cannot set property foo of #<Object> which has only a getter.
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:undefined, set:undefined}); o.foo is undefined
PASS 'use strict'; var o = Object.defineProperty({}, 'foo', {get:undefined, set:undefined}); o.foo = 42; o.result; threw exception TypeError: Cannot set property foo of #<Object> which has only a getter.
PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:function(){return 13;}}); o.foo is 13
PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:function(){return 13;}}); o.foo = 42; o.result; is 42
PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:undefined}); o.foo is undefined
PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:undefined}); o.foo = 42; o.result; is 42
PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:function(){this.result = 13;}}); o.foo is 42
PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:function(){this.result = 13;}}); o.foo = 42; o.result; is 13
PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:undefined}); o.foo is 42
PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:undefined}); o.foo = 42; o.result; threw exception TypeError: Cannot set property foo of #<Object> which has only a getter.
PASS 0 in Object.prototype is true
PASS '0' in Object.prototype is true
PASS var o = {}; o.readOnly = false; o.readOnly is true
PASS 'use strict'; var o = {}; o.readOnly = false; o.readOnly threw exception TypeError: Cannot assign to read only property 'readOnly' of object '#<Object>'.
PASS Object.getOwnPropertyDescriptor(Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return false; }, configurable: true}), 'foo', {value:false}), 'foo').writable is false
PASS Object.getOwnPropertyDescriptor(Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return false; }, configurable: true}), 'foo', {value:false, writable: false}), 'foo').writable is false
PASS Object.getOwnPropertyDescriptor(Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return false; }, configurable: true}), 'foo', {value:false, writable: true}), 'foo').writable is true
PASS var a = Object.defineProperty([], 'length', {writable: false}); a[0] = 42; 0 in a; is false
PASS 'use strict'; var a = Object.defineProperty([], 'length', {writable: false}); a[0] = 42; 0 in a; threw exception TypeError: Cannot assign to read only property 'length' of object '[object Array]'.
PASS var a = Object.defineProperty([42], '0', {writable: false}); a[0] = false; a[0]; is 42
PASS 'use strict'; var a = Object.defineProperty([42], '0', {writable: false}); a[0] = false; a[0]; threw exception TypeError: Cannot assign to read only property '0' of object '[object Array]'.
PASS var a = Object.defineProperty([], '0', {set: undefined}); a[0] = 42; a[0]; is undefined.
PASS 'use strict'; var a = Object.defineProperty([], '0', {set: undefined}); a[0] = 42; a[0]; threw exception TypeError: Cannot set property 0 of [object Array] which has only a getter.
PASS anObj.slot1 is "foo"
PASS anObj.slot2 is "bar"
PASS anObj.propertyIsEnumerable('slot1') is true
PASS anObj.propertyIsEnumerable('slot2') is false
PASS anObj.slot4 is "goo"
PASS anObj.slot5 is 123
PASS anObj._Slot5 is 123
PASS Object.getOwnPropertyDescriptor(anObj, 'slot5') is undefined.
PASS anObj.slot5 is 456
PASS anObj._Slot5 is 123
PASS Object.getOwnPropertyDescriptor(anObj, 'slot5').value is 456
PASS anObj.slot1 is "foo"
PASS anObj.slot2 is "bar"
PASS anObj.propertyIsEnumerable('slot1') is true
PASS anObj.propertyIsEnumerable('slot2') is false
PASS anObj.slot4 is "goo"
PASS anObj.slot5 is 123
PASS anObj._Slot5 is 123
PASS Object.getOwnPropertyDescriptor(anObj, 'slot5') is undefined.
PASS anObj.slot5 is 456
PASS anObj._Slot5 is 123
PASS Object.getOwnPropertyDescriptor(anObj, 'slot5').value is 456
PASS successfullyParsed is true

TEST COMPLETE