public void CancelChanges_cancels_added_changes()
        {
            var context = new OEContext();
            var product = new ProductPoco()
            {
                Id        = 1,
                Name      = "Test product",
                UnitPrice = 100
            };

            context.Set <ProductPoco>().Add(product);
            Assert.AreEqual(true, context.HasChanges());
            Assert.AreEqual(1, context.GetChanges().Count());
            context.CancelChanges();
            Assert.AreEqual(false, context.HasChanges());
            Assert.AreEqual(0, context.GetChanges().Count());
        }
        public void CancelChanges_cancels_attached_modified_changes()
        {
            var context = new OEContext();
            var product = new Product()
            {
                Id        = 1,
                Name      = "Test product",
                UnitPrice = 100
            };

            context.Set <Product>().Attach(product);
            product.UnitPrice++;
            Assert.AreEqual(true, context.HasChanges());
            Assert.AreEqual(1, context.GetChanges().Count());
            context.CancelChanges();
            Assert.AreEqual(false, context.HasChanges());
            Assert.AreEqual(0, context.GetChanges().Count());
        }