public void TestEqualsAdditionEgales()
{
Addition op = new Addition(12, 3);
Assert.IsTrue(op.Equals(new Addition(11, 4)));
Assert.IsTrue(op.Equals(op));
}
public static void CanEquateBinaryOperations()
{
var op1 = new Addition(Numbers.One, Numbers.Two);
var op2 = new Addition(Numbers.One, Numbers.Two);
Assert.True(op1.Equals(op2));
Assert.True(op1.Equals(op1));
// repeat for memoization test
Assert.True(op1.Equals(op2));
Assert.True(op2.Equals(op1));
}
public void TestEqualsNull()
{
Addition op = new Addition(12, 4);
Object obj = null;;
Assert.IsFalse(op.Equals(obj));
}
public static void BinaryOperationsCanCompareToUnaryOperations()
{
var op1 = new Addition(Numbers.One, Numbers.One);
var op2 = new Negation(Numbers.Two);
Assert.False(op1 == op2);
Assert.False(op2 == op1);
Assert.False(op1.Equals(op2));
Assert.False(op2.Equals(op1));
}
public void TestEqualsAdditionNonEgales()
{
Addition op = new Addition(12, 3);
Assert.IsFalse(op.Equals(new Addition(10, 2)));
}
public void TestEqualsNonAddition()
{
Addition op = new Addition(12, 4);
Assert.IsFalse(op.Equals(new Exception()));
}
