public void when_at_the_end_both_current_and_next_are_default()
{
LookAheadEnumerator <char> testing = CreateEnumerator("a");
Assert.IsTrue(testing.MoveNext());
Assert.IsFalse(testing.MoveNext());
Assert.AreEqual(default(char), testing.Current, "Current");
Assert.AreEqual(default(char), testing.Next, "Next");
}
public void can_move_to_second_item()
{
LookAheadEnumerator <char> testing = CreateEnumerator("abc");
Assert.IsTrue(testing.MoveNext());
Assert.IsTrue(testing.MoveNext());
Assert.AreEqual('b', testing.Current, "Current");
Assert.AreEqual('c', testing.Next, "Next");
}
public void when_moving_to_last_entry_next_is_default()
{
LookAheadEnumerator <char> testing = CreateEnumerator("a");
Assert.IsTrue(testing.MoveNext());
Assert.AreEqual('a', testing.Current, "Current");
Assert.AreEqual(default(char), testing.Next, "Next");
}
public void calling_movenext_sets_current_and_next()
{
LookAheadEnumerator <char> testing = CreateEnumerator("abc");
Assert.IsTrue(testing.MoveNext());
Assert.AreEqual('a', testing.Current, "Current");
Assert.AreEqual('b', testing.Next, "Next");
}