public void Works_when_add_argument_during_iteration()
{
var function = new Func<string, string, string>((x, y) => x + y);
var sut = new Basic.Appendable(function, "a", "b");
var e = sut.GetEnumerator();
IsTrue(e.MoveNext());
AreEqual("aa", e.Current.Function.DynamicInvoke());
sut.Add("c");
IsTrue(e.MoveNext());
AreEqual("ab", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("ba", e.Current.Function.DynamicInvoke());
sut.Add("d");
IsTrue(e.MoveNext());
AreEqual("bb", e.Current.Function.DynamicInvoke());
IsFalse(e.MoveNext());
}
public void Works_with_two_consecutive_iterations()
{
var function = new Func<string, string, string>((x, y) => x + y);
var sut = new Basic.Appendable(function, "a", "b");
var e = sut.GetEnumerator();
IsTrue(e.MoveNext());
AreEqual("aa", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("ab", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("ba", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("bb", e.Current.Function.DynamicInvoke());
IsFalse(e.MoveNext());
e = sut.GetEnumerator();
sut.Add("c");
IsTrue(e.MoveNext());
AreEqual("aa", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("ab", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("ba", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("bb", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("ca", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("cb", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("ac", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("bc", e.Current.Function.DynamicInvoke());
IsTrue(e.MoveNext());
AreEqual("cc", e.Current.Function.DynamicInvoke());
IsFalse(e.MoveNext());
}