20120323 ASP.NET: Refactoring to Patterns sample

gistfile1.cs

//v8

    protected void btnCalculate_Click(object sender, EventArgs e)
    {
        //若頁面通過驗證
        if (this.IsValid)
        {
            //取得畫面資料
            var product = this.GetProduct();                

            ILogistics logistics = FactoryRepository.GetILogistics(this.drpCompany.SelectedValue, product);
            if (logistics != null)
            {
                logistics.Calculate();
                var companyName = logistics.GetsComapanyName();
                var fee = logistics.GetsFee();

                //呈現結果
                this.SetResult(companyName, fee);
            }
            else
            {
                var js = "alert('發生不預期錯誤，請洽系統管理者');location.href='http://tw.yahoo.com/';";
                this.ClientScript.RegisterStartupScript(this.GetType(), "back", js, true);
            }            
        }
    }

    /// <summary>
    /// 呈現結果
    /// </summary>
    /// <param name="companyName"></param>
    /// <param name="fee"></param>
    private void SetResult(string companyName, double fee)
    {
        this.lblCompany.Text = companyName;
        this.lblCharge.Text = fee.ToString();
    }

    /// <summary>
    /// 取得畫面資料
    /// </summary>
    /// <returns></returns>
    private Product GetProduct()
    {
        var result = new Product
        {
            Name = this.txtProductName.Text.Trim(),
            Weight = Convert.ToDouble(this.txtProductWeight.Text),
            Size = new Size()
            {
                Length = Convert.ToDouble(this.txtProductLength.Text),
                Width = Convert.ToDouble(this.txtProductWidth.Text),
                Height = Convert.ToDouble(this.txtProductHeight.Text)
            },
            IsNeedCool = this.rdoNeedCool.SelectedValue == "1"
        };

        return result;
    }    

library

//v8
namespace RefactoringSampleLibrary
{
    public class BlackCat : RefactoringSampleLibrary.ILogistics
    {
        private double _fee;
        private readonly string _companyName = "黑貓";

        public Product ShipProduct { get; set; }

        public void Calculate()
        {
            var weight = this.ShipProduct.Weight;

            //計算運費邏輯
            if (weight > 20)
            {
                this._fee = 500;
            }
            else
            {
                //頁面呈現計算的運費結果
                var fee = 100 + weight * 10;
                this._fee = fee;
            }
        }        

        public string GetsComapanyName()
        {
            return this._companyName;
        }

        public double GetsFee()
        {
            return this._fee;
        }
    }

    public class Hsinchu : ILogistics
    {
        private double _fee;
        private readonly string _companyName = "新竹貨運";

        public void Calculate()
        {
            var length = this.ShipProduct.Size.Length;
            var width = this.ShipProduct.Size.Width;
            var height = this.ShipProduct.Size.Height;

            var size = length * width * height;

            //計算運費邏輯
            //長 x 寬 x 高（公分）x 0.0000353
            if (length > 100 || width > 100 || height > 100)
            {
                this._fee = size * 0.0000353 * 1100 + 500;
            }
            else
            {
                this._fee = size * 0.0000353 * 1200;
            }

        }

        public Product ShipProduct { get; set; }

        public string GetsComapanyName()
        {
            return this._companyName;
        }

        public double GetsFee()
        {
            return this._fee;
        }
    }

    public class PostOffice : ILogistics
    {
        private double _fee;
        private readonly string _companyName = "郵局";

        public void Calculate()
        {
            var weight = this.ShipProduct.Weight;
            var feeByWeight = 80 + weight * 10;

            var length = this.ShipProduct.Size.Length;
            var width = this.ShipProduct.Size.Width;
            var height = this.ShipProduct.Size.Height;

            var size = length * width * height;
            var feeBySize = size * 0.0000353 * 1100;

            //計算運費邏輯
            if (feeByWeight < feeBySize)
            {
                this._fee = feeByWeight;
            }
            else
            {
                this._fee = feeBySize;
            }
        }

        public Product ShipProduct { get; set; }

        public string GetsComapanyName()
        {
            return this._companyName;
        }

        public double GetsFee()
        {
            return this._fee;
        }
    }
}

namespace RefactoringSampleLibrary
{
    public class FactoryRepository
    {
        /// <summary>
        /// 將ILogistics的instance，交給工廠來決定
        /// </summary>
        /// <param name="company"></param>
        /// <param name="product"></param>
        /// <returns></returns>
        public static ILogistics GetILogistics(string company, Product product)
        {
            if (company == "1")
            {
                return new BlackCat() { ShipProduct = product };
            }
            else if (company == "2")
            {
                return new Hsinchu() { ShipProduct = product };
            }
            else if (company == "3")
            {
                return new PostOffice() { ShipProduct = product };
            }
            else
            {
                return null;
            }
        }
    }
}

namespace RefactoringSampleLibrary
{
    public interface ILogistics
    {
        void Calculate();
        string GetsComapanyName();
        double GetsFee();
    }
}

UnitTest.cs

//v7

        /// <summary>
        ///GetILogistics 的測試
        ///</summary>
        [TestMethod()]
        public void GetILogisticsTest_GetBlackCat()
        {
            //arrange
            string p = "1";
            Product product = new Product();
            ILogistics expected = new BlackCat();

            ILogistics actual;

            //act
            actual = FactoryRepository.GetILogistics(p, product);

            //assert
            Assert.AreEqual(expected.GetType(), actual.GetType());
        }

        /// <summary>
        ///GetILogistics 的測試
        ///</summary>
        [TestMethod()]
        public void GetILogisticsTest_Get新竹貨運()
        {
            //arrange
            string p = "2";
            Product product = new Product();
            ILogistics expected = new Hsinchu();

            ILogistics actual;

            //act
            actual = FactoryRepository.GetILogistics(p, product);

            //assert
            Assert.AreEqual(expected.GetType(), actual.GetType());
        }

        /// <summary>
        ///GetILogistics 的測試
        ///</summary>
        [TestMethod()]
        public void GetILogisticsTest_Get郵局()
        {
            //arrange
            string p = "3";
            Product product = new Product();
            ILogistics expected = new PostOffice();

            ILogistics actual;

            //act
            actual = FactoryRepository.GetILogistics(p, product);

            //assert
            Assert.AreEqual(expected.GetType(), actual.GetType());
        }

//v3 Unit test

        /// <summary>
        ///GetsComapanyName 的測試
        ///</summary>
        [TestMethod()]
        public void GetsComapanyNameTest_v3()
        {
            BlackCat target = new BlackCat();
            string expected = "黑貓";
            string actual;
            actual = target.GetsComapanyName();
            Assert.AreEqual(expected, actual);
        }

        /// <summary>
        ///GetsFee 的測試
        ///</summary>
        [TestMethod()]
        public void GetsFeeTest_v3()
        {
            BlackCat target = new BlackCat();
            double expected = 0F;
            double actual;
            actual = target.GetsFee();
            Assert.AreEqual(expected, actual);
        }

        /// <summary>
        ///Calculate 的測試
        ///</summary>
        [TestMethod()]
        public void CalculateTest_v3()
        {
            //從整合測試的test case，來當做單元測試的test case

            //arrange
            BlackCat target = new BlackCat()
            {
                ShipProduct = new Product
                {
                    IsNeedCool = true,
                    Name = "商品測試1",
                    Size = new Size
                    {
                        Height = 10,
                        Length = 30,
                        Width = 20
                    },
                    Weight = 10
                }
            };

            //act
            target.Calculate();

            
            var expectedName = "黑貓";
            var expectedFee = 200;

            var actualName = target.GetsComapanyName();
            var actualFee = target.GetsFee();

            //assert
            Assert.AreEqual(expectedName, actualName);
            Assert.AreEqual(expectedFee, actualFee);
        }
    }

        /// <summary>
        ///Calculate 的測試
        ///</summary>
        [TestMethod()]
        public void CalculateTest_v3()
        {
            Hsinchu target = new Hsinchu()
            {
                ShipProduct = new Product
                {
                    IsNeedCool = true,
                    Name = "商品測試1",
                    Size = new Size
                    {
                        Height = 10,
                        Length = 30,
                        Width = 20
                    },
                    Weight = 10
                }
            };

            //act
            target.Calculate();

            //assert
            var expectedName = "新竹貨運";
            var expectedFee = 254.16;

            var actualName = target.GetsComapanyName();
            var actualFee = target.GetsFee();

            //assert
            Assert.AreEqual(expectedName, actualName);
            Assert.AreEqual(expectedFee, actualFee);
        }

        /// <summary>
        ///GetsComapanyName 的測試
        ///</summary>
        [TestMethod()]
        public void GetsComapanyNameTest_v3()
        {
            Hsinchu target = new Hsinchu();
            string expected = "新竹貨運";
            string actual;
            actual = target.GetsComapanyName();
            Assert.AreEqual(expected, actual);
        }

        /// <summary>
        ///GetsFee 的測試
        ///</summary>
        [TestMethod()]
        public void GetsFeeTest_v3()
        {
            Hsinchu target = new Hsinchu();
            double expected = 0F;
            double actual;
            actual = target.GetsFee();
            Assert.AreEqual(expected, actual);
        }
    
        /// <summary>
        ///Calculate 的測試
        ///</summary>
        [TestMethod()]
        public void CalculateTest_v3()
        {
            PostOffice target = new PostOffice()
            {
                ShipProduct = new Product
                {
                    IsNeedCool = true,
                    Name = "商品測試1",
                    Size = new Size
                    {
                        Height = 10,
                        Length = 30,
                        Width = 20
                    },
                    Weight = 10
                }
            };

            //act
            target.Calculate();

            //assert
            var expectedName = "郵局";
            var expectedFee = 180;

            var actualName = target.GetsComapanyName();
            var actualFee = target.GetsFee();

            //assert
            Assert.AreEqual(expectedName, actualName);
            Assert.AreEqual(expectedFee, actualFee);

        }

        /// <summary>
        ///GetsFee 的測試
        ///</summary>
        [TestMethod()]
        public void GetsFeeTest_v3()
        {
            PostOffice target = new PostOffice();
            double expected = 0F;
            double actual;
            actual = target.GetsFee();
            Assert.AreEqual(expected, actual);
        }

        /// <summary>
        ///GetsComapanyName 的測試
        ///</summary>
        [TestMethod()]
        public void GetsComapanyNameTest_v3()
        {
            PostOffice target = new PostOffice();
            string expected = "郵局";
            string actual;
            actual = target.GetsComapanyName();
            Assert.AreEqual(expected, actual);
        }