{"ScriptPreparationCode":"var obj = { a: 1, b: 2, c: 3, d: 4, e: 5 };","TestCases":[{"Name":"undefined","Code":"undefined === obj.f;","IsDeferred":false},{"Name":"typeof","Code":"\u0027undefined\u0027 === typeof obj.f;","IsDeferred":false},{"Name":"in","Code":"!(\u0027f\u0027 in obj);","IsDeferred":false},{"Name":"hasOwnProperty","Code":"!obj.hasOwnProperty( \u0027f\u0027 );","IsDeferred":false},{"Name":"bool","Code":"! obj.f;","IsDeferred":false}]}