public void ApplyDiscounts_swichChoosings() { //Arrange List <string> merchants = new List <string>() { "CIRCLE_K", "TELIA", "NETTO", "TELIA" }; List <decimal> fee = new List <decimal>() { 1m, 2m, 1.5m, 0.5m }; List <decimal> expected = new List <decimal>() { 0.8m, 1.9m, 1.5m, 0.4m }; //Act discounts.ApplyDiscounts(fee, merchants); //Assert //Assert.Equal(expected, discounts.amountAfterDiscount); CollectionAssert.AreEqual(expected, discounts.amountAfterDiscount); }