public void ItemEqualityTest()
{
// Arrange
var itemDef = new ItemDefinition(Guid.NewGuid());
var item = new ItemInstance(Guid.NewGuid(), itemDef);
var item2 = new ItemInstance(Guid.NewGuid(), itemDef);
var itemDef3 = new ItemDefinition(Guid.NewGuid());
var item3 = new ItemInstance(Guid.NewGuid(), itemDef3);
var instanceComparer = EqualityComparer <IItemInstance> .Default;
var definitionComparer = EqualityComparer <ItemDefinition> .Default;
// Act
// Assert
// Item - Item2 comparision (equal)
Assert.AreEqual(item, item2); // Items should be equal, because they're based on the same definition.
Assert.IsTrue(instanceComparer.Equals(item, item2));
Assert.IsTrue(item == item2);
Assert.IsFalse(item != item2);
Assert.IsTrue(item.Equals(item2));
// Item - Item3 comparision (not equal)
Assert.AreNotEqual(item, item3);
Assert.IsFalse(instanceComparer.Equals(item, item3));
Assert.IsFalse(item == item3);
Assert.IsTrue(item != item3);
Assert.IsFalse(item.Equals(item3));
// Definition comparision (not equal)
Assert.IsFalse(definitionComparer.Equals(itemDef, itemDef3));
Assert.IsFalse(itemDef == itemDef3);
Assert.IsTrue(itemDef != itemDef3);
Assert.IsFalse(itemDef.Equals(itemDef3));
}