public void TestExecuteUsing()
{
String tempcollname = null;
using(MapReduceBuilder mrb = mrcol.MapReduceBuilder().Map(mapfunction).Reduce(reducefunction)){
MapReduce mr = mrb.Execute();
Assert.IsNotNull(mr.Result);
Assert.IsTrue(mr.Result.Ok);
tempcollname = tests.Name + "." + mr.Result.CollectionName;
bool found = false;
Assert.IsTrue(tests.GetCollectionNames().Contains(tempcollname));
}
Assert.IsFalse(tests.GetCollectionNames().Contains(tempcollname));
}