public void ContainsKeyTest()
{
IWDT iwdt = new IWDT();
Assert.IsFalse(iwdt.ContainsKey(HT(1, 2)));
iwdt.AddOrUpdate(HT(1, 1), 2, (k, v) => { throw new AssertFailedException(); return(default(int)); });
Assert.IsTrue(iwdt.ContainsKey(HT(1, 2)));
iwdt.Keys[Tuple.Create(1, 1)].IsGarbage = true;
Assert.IsFalse(iwdt.ContainsKey(HT(1, 2)));
iwdt.AddOrUpdate(HT(2, 1), 2, (k, v) => { throw new AssertFailedException(); return(default(int)); });
Assert.IsTrue(iwdt.ContainsKey(HT(2, 2)));
Assert.IsTrue(iwdt.ContainsKey(HT(2, 2)));
}