├── .gitignore
├── .idea
    └── .idea.replace-condition-logic-with-strategy
    │   └── .idea
    │       ├── contentModel.xml
    │       ├── encodings.xml
    │       ├── indexLayout.xml
    │       ├── modules.xml
    │       ├── projectSettingsUpdater.xml
    │       └── vcs.xml
├── replace-condition-logic-with-strategy.sln
├── replace-condition-logic-with-strategy.sln.DotSettings
└── replace-condition-logic-with-strategy
    ├── Cart.cs
    ├── CartTests.cs
    ├── Properties
        └── AssemblyInfo.cs
    ├── packages.config
    └── replace-condition-logic-with-strategy.csproj


/.gitignore:
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1 | bin/
2 | obj/
3 | /packages/
4 | riderModule.iml
5 | /_ReSharper.Caches/
6 | /.idea/*
7 | 


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/.idea/.idea.replace-condition-logic-with-strategy/.idea/contentModel.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project version="4">
 3 |   <component name="ContentModelStore">
 4 |     <e p="C:\Users\joey_\AppData\Local\JetBrains\Rider2020.3\extResources" t="IncludeRecursive" />
 5 |     <e p="C:\Users\joey_\AppData\Local\JetBrains\Rider2020.3\resharper-host\Local\Transient\Rider\v203\SolutionCaches\_replace-condition-logic-with-strategy.-1038848367.00" t="ExcludeRecursive" />
 6 |     <e p="C:\Users\joey_\RiderProjects\tdd.best\replace-condition-logic-with-strategy" t="IncludeFlat">
 7 |       <e p="packages" t="ExcludeRecursive" />
 8 |       <e p="replace-condition-logic-with-strategy" t="IncludeRecursive">
 9 |         <e p="bin" t="ExcludeRecursive" />
10 |         <e p="Cart.cs" t="Include" />
11 |         <e p="CartTests.cs" t="Include" />
12 |         <e p="obj" t="ExcludeRecursive" />
13 |         <e p="packages.config" t="Include" />
14 |         <e p="Properties" t="Include">
15 |           <e p="AssemblyInfo.cs" t="Include" />
16 |         </e>
17 |         <e p="replace-condition-logic-with-strategy.csproj" t="IncludeRecursive" />
18 |       </e>
19 |       <e p="replace-condition-logic-with-strategy.sln" t="IncludeFlat" />
20 |     </e>
21 |   </component>
22 | </project>


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/.idea/.idea.replace-condition-logic-with-strategy/.idea/encodings.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="Encoding" addBOMForNewFiles="with BOM under Windows, with no BOM otherwise" />
4 | </project>


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/.idea/.idea.replace-condition-logic-with-strategy/.idea/indexLayout.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="ContentModelUserStore">
4 |     <attachedFolders />
5 |     <explicitIncludes />
6 |     <explicitExcludes />
7 |   </component>
8 | </project>


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/.idea/.idea.replace-condition-logic-with-strategy/.idea/modules.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="ProjectModuleManager">
4 |     <modules>
5 |       <module fileurl="file://$PROJECT_DIR$/.idea/.idea.replace-condition-logic-with-strategy/.idea/riderModule.iml" filepath="$PROJECT_DIR$/.idea/.idea.replace-condition-logic-with-strategy/.idea/riderModule.iml" />
6 |     </modules>
7 |   </component>
8 | </project>


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/.idea/.idea.replace-condition-logic-with-strategy/.idea/projectSettingsUpdater.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="RiderProjectSettingsUpdater">
4 |     <option name="vcsConfiguration" value="2" />
5 |   </component>
6 | </project>


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/.idea/.idea.replace-condition-logic-with-strategy/.idea/vcs.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="VcsDirectoryMappings">
4 |     <mapping directory="$PROJECT_DIR$" vcs="Git" />
5 |   </component>
6 | </project>


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/replace-condition-logic-with-strategy.sln:
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 1 | 
 2 | Microsoft Visual Studio Solution File, Format Version 12.00
 3 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "replace-condition-logic-with-strategy", "replace-condition-logic-with-strategy\replace-condition-logic-with-strategy.csproj", "{3F0E4202-15FD-4915-9A1E-49CFDCD60412}"
 4 | EndProject
 5 | Global
 6 | 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 7 | 		Debug|Any CPU = Debug|Any CPU
 8 | 		Release|Any CPU = Release|Any CPU
 9 | 	EndGlobalSection
10 | 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
11 | 		{3F0E4202-15FD-4915-9A1E-49CFDCD60412}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
12 | 		{3F0E4202-15FD-4915-9A1E-49CFDCD60412}.Debug|Any CPU.Build.0 = Debug|Any CPU
13 | 		{3F0E4202-15FD-4915-9A1E-49CFDCD60412}.Release|Any CPU.ActiveCfg = Release|Any CPU
14 | 		{3F0E4202-15FD-4915-9A1E-49CFDCD60412}.Release|Any CPU.Build.0 = Release|Any CPU
15 | 	EndGlobalSection
16 | EndGlobal
17 | 


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/replace-condition-logic-with-strategy.sln.DotSettings:
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1 | <wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
2 | 	<s:Boolean x:Key="/Default/UserDictionary/Words/=hsinchu/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>


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/replace-condition-logic-with-strategy/Cart.cs:
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 1 | #region
 2 | 
 3 | using System;
 4 | 
 5 | #endregion
 6 | 
 7 | namespace replace_condition_logic_with_strategy
 8 | {
 9 |     public class Cart
10 |     {
11 |         public double shippingFee(string shipper, double length, double width, double height, double weight)
12 |         {
13 |             if (shipper.Equals("black cat"))
14 |             {
15 |                 if (weight > 20)
16 |                 {
17 |                     return 500;
18 |                 }
19 |                 else
20 |                 {
21 |                     return 100 + weight * 10;
22 |                 }
23 |             }
24 |             else if (shipper.Equals("hsinchu"))
25 |             {
26 |                 double size = length * width * height;
27 |                 if (length > 100 || width > 100 || height > 100)
28 |                 {
29 |                     return size * 0.00002 * 1100 + 500;
30 |                 }
31 |                 else
32 |                 {
33 |                     return size * 0.00002 * 1200;
34 |                 }
35 |             }
36 |             else if (shipper.Equals("post office"))
37 |             {
38 |                 double feeByWeight = 80 + weight * 10;
39 |                 double size = length * width * height;
40 |                 double feeBySize = size * 0.00002 * 1100;
41 |                 return feeByWeight < feeBySize ? feeByWeight : feeBySize;
42 |             }
43 |             else
44 |             {
45 |                 throw new ArgumentException("shipper not exist");
46 |             }
47 |         }
48 |     }
49 | }


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/replace-condition-logic-with-strategy/CartTests.cs:
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 1 | #region
 2 | 
 3 | using NUnit.Framework;
 4 | 
 5 | #endregion
 6 | 
 7 | namespace replace_condition_logic_with_strategy
 8 | {
 9 |     [TestFixture]
10 |     public class CartTests
11 |     {
12 |         private readonly string blackCat = "black cat";
13 |         private readonly Cart cart = new Cart();
14 |         private readonly string hsinchu = "hsinchu";
15 |         private readonly string postOffice = "post office";
16 | 
17 |         [Test]
18 |         public void black_cat_with_light_weight()
19 |         {
20 |             double shippingFee = cart.shippingFee(blackCat, 30, 20, 10, 5);
21 |             feeShouldBe(150, shippingFee);
22 |         }
23 | 
24 |         [Test]
25 |         public void black_cat_with_heavy_weight()
26 |         {
27 |             double shippingFee = cart.shippingFee(blackCat, 30, 20, 10, 50);
28 |             feeShouldBe(500, shippingFee);
29 |         }
30 | 
31 |         [Test]
32 |         public void hsinchu_with_small_size()
33 |         {
34 |             double shippingFee = cart.shippingFee(hsinchu, 30, 20, 10, 50);
35 |             feeShouldBe(144, shippingFee);
36 |         }
37 | 
38 |         [Test]
39 |         public void hsinchu_with_huge_size()
40 |         {
41 |             double shippingFee = cart.shippingFee(hsinchu, 100, 20, 10, 50);
42 |             feeShouldBe(480, shippingFee);
43 |         }
44 | 
45 |         [Test]
46 |         public void post_office_by_weight()
47 |         {
48 |             double shippingFee = cart.shippingFee(postOffice, 100, 20, 10, 3);
49 |             feeShouldBe(110, shippingFee);
50 |         }
51 | 
52 |         [Test]
53 |         public void post_office_by_size()
54 |         {
55 |             double shippingFee = cart.shippingFee(postOffice, 100, 20, 10, 300);
56 |             feeShouldBe(440, shippingFee);
57 |         }
58 | 
59 |         private void feeShouldBe(double expected, double shippingFee)
60 |         {
61 |             Assert.AreEqual(expected, shippingFee);
62 |         }
63 |     }
64 | }


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/replace-condition-logic-with-strategy/Properties/AssemblyInfo.cs:
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 1 | #region
 2 | 
 3 | using System.Reflection;
 4 | using System.Runtime.InteropServices;
 5 | 
 6 | #endregion
 7 | 
 8 | // General Information about an assembly is controlled through the following 
 9 | // set of attributes. Change these attribute values to modify the information
10 | // associated with an assembly.
11 | [assembly: AssemblyTitle("replace_condition_logic_with_strategy")]
12 | [assembly: AssemblyDescription("")]
13 | [assembly: AssemblyConfiguration("")]
14 | [assembly: AssemblyCompany("")]
15 | [assembly: AssemblyProduct("replace_condition_logic_with_strategy")]
16 | [assembly: AssemblyCopyright("Copyright ©  2020")]
17 | [assembly: AssemblyTrademark("")]
18 | [assembly: AssemblyCulture("")]
19 | 
20 | // Setting ComVisible to false makes the types in this assembly not visible 
21 | // to COM components.  If you need to access a type in this assembly from 
22 | // COM, set the ComVisible attribute to true on that type.
23 | [assembly: ComVisible(false)]
24 | 
25 | // The following GUID is for the ID of the typelib if this project is exposed to COM
26 | [assembly: Guid("3F0E4202-15FD-4915-9A1E-49CFDCD60412")]
27 | 
28 | // Version information for an assembly consists of the following four values:
29 | //
30 | //      Major Version
31 | //      Minor Version 
32 | //      Build Number
33 | //      Revision
34 | //
35 | // You can specify all the values or you can default the Build and Revision Numbers 
36 | // by using the '*' as shown below:
37 | // [assembly: AssemblyVersion("1.0.*")]
38 | [assembly: AssemblyVersion("1.0.0.0")]
39 | [assembly: AssemblyFileVersion("1.0.0.0")]


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/replace-condition-logic-with-strategy/packages.config:
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1 | <?xml version="1.0" encoding="utf-8"?>
2 | 
3 | <packages>
4 |     <package id="NUnit" version="3.12.0" targetFramework="net461" />
5 | </packages>


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/replace-condition-logic-with-strategy/replace-condition-logic-with-strategy.csproj:
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 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 3 |     <Import Project="..\packages\NUnit.3.12.0\build\NUnit.props" Condition="Exists('..\packages\NUnit.3.12.0\build\NUnit.props')" />
 4 |     <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
 5 |     <PropertyGroup>
 6 |         <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
 7 |         <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
 8 |         <ProjectGuid>{3F0E4202-15FD-4915-9A1E-49CFDCD60412}</ProjectGuid>
 9 |         <OutputType>Library</OutputType>
10 |         <AppDesignerFolder>Properties</AppDesignerFolder>
11 |         <RootNamespace>replace_condition_logic_with_strategy</RootNamespace>
12 |         <AssemblyName>replace_condition_logic_with_strategy</AssemblyName>
13 |         <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
14 |         <FileAlignment>512</FileAlignment>
15 |     </PropertyGroup>
16 |     <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
17 |         <PlatformTarget>AnyCPU</PlatformTarget>
18 |         <DebugSymbols>true</DebugSymbols>
19 |         <DebugType>full</DebugType>
20 |         <Optimize>false</Optimize>
21 |         <OutputPath>bin\Debug\</OutputPath>
22 |         <DefineConstants>DEBUG;TRACE</DefineConstants>
23 |         <ErrorReport>prompt</ErrorReport>
24 |         <WarningLevel>4</WarningLevel>
25 |     </PropertyGroup>
26 |     <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
27 |         <PlatformTarget>AnyCPU</PlatformTarget>
28 |         <DebugType>pdbonly</DebugType>
29 |         <Optimize>true</Optimize>
30 |         <OutputPath>bin\Release\</OutputPath>
31 |         <DefineConstants>TRACE</DefineConstants>
32 |         <ErrorReport>prompt</ErrorReport>
33 |         <WarningLevel>4</WarningLevel>
34 |     </PropertyGroup>
35 |     <ItemGroup>
36 |         <Reference Include="nunit.framework, Version=3.12.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb">
37 |           <HintPath>..\packages\NUnit.3.12.0\lib\net45\nunit.framework.dll</HintPath>
38 |           <Private>True</Private>
39 |         </Reference>
40 |         <Reference Include="System" />
41 |         <Reference Include="System.Core" />
42 |         <Reference Include="System.Data" />
43 |         <Reference Include="System.Xml" />
44 |     </ItemGroup>
45 |     <ItemGroup>
46 |         <Compile Include="Cart.cs" />
47 |         <Compile Include="CartTests.cs" />
48 |         <Compile Include="Properties\AssemblyInfo.cs" />
49 |     </ItemGroup>
50 |     <ItemGroup>
51 |       <None Include="packages.config" />
52 |     </ItemGroup>
53 |     <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
54 |     <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
55 |       <PropertyGroup>
56 |         <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105.The missing file is {0}.</ErrorText>
57 |       </PropertyGroup>
58 |       <Error Condition="!Exists('..\packages\NUnit.3.12.0\build\NUnit.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\NUnit.3.12.0\build\NUnit.props'))" />
59 |     </Target>
60 |     <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
61 |          Other similar extension points exist, see Microsoft.Common.targets.
62 |     <Target Name="BeforeBuild">
63 |     </Target>
64 |     <Target Name="AfterBuild">
65 |     </Target>
66 |     -->
67 | 
68 | </Project>
69 | 


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