description("Test to ensure correct behaviour of Object.defineProperties"); shouldThrow("Object.defineProperties()"); shouldThrow("Object.defineProperties('a string')"); shouldThrow("Object.defineProperties({}, 'a string')"); shouldBe("JSON.stringify(Object.defineProperties({},{property:{value:'foo', enumerable:true}, property2:{value:'foo', enumerable:true}}))", '\'{"property":"foo","property2":"foo"}\''); shouldBe("JSON.stringify(Object.defineProperties({},{property:{value:'foo'}, property2:{value:'foo', enumerable:true}}))", '\'{"property2":"foo"}\''); shouldBe("JSON.stringify(Object.defineProperties({property:'foo'},{property:{value:'foo', enumerable:true}, property2:{value:'foo', enumerable:true}}))", '\'{"property":"foo","property2":"foo"}\''); shouldBe("JSON.stringify(Object.defineProperties({property:'foo'},{property:{value:'foo', enumerable:false}, property2:{value:'foo', enumerable:true}}))", '\'{"property2":"foo"}\''); shouldBe("JSON.stringify(Object.defineProperties({property:'foo'},{property:{value:'foo'}, property2:{value:'foo', enumerable:true}}))", '\'{"property":"foo","property2":"foo"}\''); emptyObject={}; shouldThrow("Object.defineProperties(emptyObject, {foo:{value: true}, bar:{get:function(){}, writable:true}})"); shouldBeFalse("'foo' in emptyObject");