public void WhenSerializing_ThenInvokesSerializer()
{
var serializer = new FakeSerializer();
var data = new Data();
serializer.Serialize(data);
Assert.Same(data, serializer.Data);
}
public void WhenSerializingNullGraph_ThenThrowsArgumentNullException()
{
var serializer = new FakeSerializer();
Assert.Throws <ArgumentNullException>(() => serializer.Serialize <Data>(null));
}