public void Test_Subtract_Empty()
{
TokenCollection a = Create(new[] { "mouse", "mouse", "mouse" });
TokenCollection b = Create(new[] { "mouse", "mouse", "mouse" });
TokenCollection sub = TokenCollection.Subtract(a, b);
Assert.AreEqual(0, sub.Sum);
Assert.AreEqual(0, sub.get("mouse"));
Assert.AreEqual(0, sub.Count);
}
public void Test_Subtract()
{
TokenCollection a = Create(new[] { "mouse", "mouse", "mouse" });
TokenCollection b = Create(new[] { "mouse", "chicken", "chicken" });
TokenCollection sub = TokenCollection.Subtract(a, b);
Assert.AreEqual(2, sub.Sum);
Assert.AreEqual(2, sub.get("mouse"));
Assert.AreEqual(1, sub.Count);
Assert.IsFalse(sub.Contains("chicken"));
Assert.AreEqual(0, sub.get("chicken"));
}
public void Test_Subtract_Rule()
{
TokenCollection a = new TokenCollection();
a.Add("mouse");
a.Add("mouse");
a.Add("mouse");
TokenCollection b = new TokenCollection();
b.Add("house");
b.Add("house");
try
{
TokenCollection.Subtract(b, a);
Assert.Fail();
}
catch (ArgumentException)
{
}
}
