public void Return_Values()
{
A = new Subset();
A.set_value(0.0, 0.0);
A.set_value(0.5, 1.0);
A.set_value(1.0, 0.0);
Assert.AreEqual(0.0, A.membership(0.0), "Incorrect membership value");
Assert.AreEqual(1.0, A.membership(0.5), "Incorrect membership value");
Assert.AreEqual(0.0, A.membership(1.0), "Incorrect membership value");
Assert.Throws<KeyNotFoundException>(delegate{A.membership(0.2);});
}
