public void CalculateSuggestedPriceTest() { var currentProduct = new Collections(1, "Saw", ""); currentProduct.Cost = 50m; var expected = new OperationResult <decimal>(55m, ""); var actual = currentProduct.CalculateSuggestedPrice(10m); Assert.AreEqual(expected.Result, actual.Result); Assert.AreEqual(expected.Message, actual.Message); }