public void ContractCollectionGarbageCollects()
{
var contractCollection = new ContractCollection();
var s1 = (Contract)contractCollection.GetOrAddReadContract(typeof(Person));
var s2 = (Contract)contractCollection.GetOrAddReadContract(typeof(Wrapper <Person>));
Assert.Equal(4, contractCollection.Contracts.Count);
Assert.True(contractCollection.Contracts.Contains(s1));
Assert.True(contractCollection.Contracts.Contains(s2));
contractCollection.GarbageCollect(new[] { s2 });
Assert.Equal(4, contractCollection.Contracts.Count);
Assert.True(contractCollection.Contracts.Contains(s1));
Assert.True(contractCollection.Contracts.Contains(s2));
contractCollection.GarbageCollect(new[] { s1 });
Assert.Equal(3, contractCollection.Contracts.Count);
Assert.True(contractCollection.Contracts.Contains(s1));
Assert.False(contractCollection.Contracts.Contains(s2));
contractCollection.GarbageCollect(new Contract[0]);
Assert.Equal(0, contractCollection.Contracts.Count);
Assert.False(contractCollection.Contracts.Contains(s1));
Assert.False(contractCollection.Contracts.Contains(s2));
}