public void instance_key_is_predictable()
{
var i1 = new ConfiguredInstance(GetType()).Named("foo");
var i2 = new ConfiguredInstance(GetType()).Named("bar");
i1.InstanceKey(GetType()).ShouldEqual(i1.InstanceKey(GetType()));
i2.InstanceKey(GetType()).ShouldEqual(i2.InstanceKey(GetType()));
i1.InstanceKey(GetType()).ShouldNotEqual(i2.InstanceKey(GetType()));
i1.InstanceKey(typeof(InstanceUnderTest)).ShouldNotEqual(i1.InstanceKey(GetType()));
}