public void Infix11()
{
Console.WriteLine("Testing infix < ");
BinaryTree ast = PrologTerm("ali :- 1 < 2.");
Assert.AreEqual(":-", ast.Name);
Assert.AreEqual("ali", ast.Left.Name);
Assert.AreEqual("<", ast.Right.Name);
Assert.AreEqual("1", ast.Right.Left.Name);
Assert.AreEqual("2", ast.Right.Right.Name);
}