NUnit doesn't work well with Assert.AreEqual
- by stasal
Hi! I'm new to unit-testing and NUit in particular.
I'm just typing some examples from the book which refers to Java and JUnit. But I'm using C# instead.
The problem is: I've got a class with overriden methods such as Equals() and GetHashCode(), but when I am trying to compare two objects of this class with Assert.AreEqual() my code is not called, so I get an exception.
Assert.True(MyClass.Equals(MyClass2)) does work well. But I don't wanna use this construction instead of Assert.AreEqual(). Where the problem can be?
Here is the class:
public class Money
{
public int amount;
protected string currency;
public Money(int amount, string currency)
{
this.amount = amount;
this.currency = currency;
}
public new bool Equals(object obj)
{
if (obj == null)
return false;
Money money = (Money)obj;
return (amount == money.amount)
&& (Currency().Equals(money.Currency()));
}
public new int GetHashCode()
{
return (string.Format("{0}{1}", amount, currency)).GetHashCode();
}
public static Money Dollar(int amount)
{
return new Money(amount, "USD");
}
public static Money Franc(int amount)
{
return new Money(amount, "CHF");
}
public Money Times(int multiplier)
{
return new Money(amount * multiplier, currency);
}
public string Currency()
{
return currency;
}
}
And the test method itself:
[TestFixture]
public class DollarTest
{
[Test]
public void TestMultiplication()
{
Money five = Money.Dollar(5);
Assert.True(Money.Dollar(10).Equals(five.Times(2))); // ok
Assert.AreEqual(Money.Dollar(10), five.Times(2)); // fails
}
}
Thanks.
