public void TestAssertExist ()
{
Simple simple= new Simple();
simple.AssertExists();
simple=default(Simple);
try{
simple.AssertExists();
Assert.Fail("Fail");
}
catch{
Console.WriteLine("first pass");
}
simple=null;
try{
simple.AssertExists();
Assert.Fail("Fail");
}
catch{
Console.WriteLine("second pass");
}
}