public void ShoulEnumerateTerminals()
{
NonTerminalNode <char> parent, child;
child = new NonTerminalNode <char>();
child.Nodes.Add(new TerminalNode <char>(new MockedTerminalInput('b')));
child.Nodes.Add(new TerminalNode <char>(new MockedTerminalInput('c')));
child.Nodes.Add(new TerminalNode <char>(new MockedTerminalInput('d')));
parent = new NonTerminalNode <char>();
parent.Nodes.Add(new TerminalNode <char>(new MockedTerminalInput('a')));
parent.Nodes.Add(child);
parent.Nodes.Add(new TerminalNode <char>(new MockedTerminalInput('e')));
Assert.AreEqual("abcde", new string( parent.EnumerateInputs().OfType <MockedTerminalInput>().Select(item => item.Value).ToArray()));
}
