public void CreateTest_ShouldThrowInvalidCustExp_When_NoISequenceObject()
{
var sequence = new SequenceGenerator(null);
Assert.Throws <InvalidCastException>(()
=> sequence.Create());
}
public void Create_ShouldReturnISequence()
{
var quadraticSequence = new Mock <ISequence>();
SequenceGenerator sequence = new SequenceGenerator(quadraticSequence.Object);
var actual = sequence.Create();
Assert.IsAssignableFrom <IEnumerable <int> >(actual);
}