public override bool Equals(object obj)
{
SimpleObjectWithOverridenEquals o = obj as SimpleObjectWithOverridenEquals;
if (o == null)
{
return(false);
}
return(A == o.A);
}
public void HashSetOfObjectsSimpleObjectWithOverridenEqualsButWithAReferenceEqualityComparerTest()
{
// Create an object and add it to the hash set
SimpleObjectWithOverridenEquals obj = new SimpleObjectWithOverridenEquals
{
A = 2
};
HashSet <object> hs = new HashSet <object>(ReferenceComparer.Instance);
hs.Add(obj);
Assert.IsTrue(hs.Contains(obj));
// Modify the object
obj.A = 33;
Assert.IsTrue(hs.Contains(obj)); // Modified objects will have a different hash code, but they are still found
}
public void HashSetOfObjectsSimpleObjectWithOverridenEqualsTest()
{
// Create an object and add it to the hash set
SimpleObjectWithOverridenEquals obj = new SimpleObjectWithOverridenEquals
{
A = 2
};
HashSet <object> hs = new HashSet <object>();
hs.Add(obj);
Assert.IsTrue(hs.Contains(obj));
// Modify the object
obj.A = 33;
Assert.IsFalse(hs.Contains(obj)); // Modified objects will have a different hash code
}
