單元測試如何覆蓋internal的方法

在類的設計中經常會有類或者方法要設置成private或者internal等方式，在使用中這麼做無可厚非，但是對單元測試的影響也頗大

1. 對於private方法，那隻有做一個副本然後改成internal或public來測試
2. 對於internal的類和方法可以直接利用[assembly]標簽來指定該類可以被哪個dll/方案讀取

  1 /*******************************************************************************
  2 * File Name：  SoftwareInfoHelper.cs
  3 * Namespace: 
  4 *
  5 * CreateTime: 2018/9/6 14:50
  6 * Author：  linkanyway
  7 * Description： SoftwareInfoHelper
  8 * Class Name： SoftwareInfoHelper
  9 *
 10 * Ver ChangeDate Author Description
 11 * ───────────────────────────────────
 12 * V0.01 2018/9/6 14:50 linkanyway draft
 13 *
 14 * Copyright (c) 2018 linkanyway 
 15 * Description: Framework
 16 *
 17 *********************************************************************************/
 18 
 19 using System;
 20 using System.Reflection;
 21 using System.Runtime.CompilerServices;
 22 using System.Runtime.InteropServices;
 23 
 24 
 25 [assembly: InternalsVisibleTo("TestProject.Nirvana.Infrastructure")
 26 ]
 27 
 28 namespace Nirvana.Infrastructure.Runtime
 29 {
 30     /// <summary>
 31     /// SoftwareInfoHelper
 32     /// </summary>
 33     // ReSharper disable once UnusedMember.Global
 34     public static class SoftwareInfoHelper
 35     {
 36         /// <summary>
 37         /// Return correct .NET Core product name like ".NET Core 2.1.0" instead of ".NET Core 4.6.26515.07" returning by RuntimeInformation.FrameworkDescription
 38         /// </summary>
 39         /// <returns></returns>
 40         // ReSharper disable once UnusedMember.Global
 41         internal static string GetFrameworkDescription()
 42         {
 43             // ".NET Core 4.6.26515.07" => ".NET Core 2.1.0"
 44             // var parts = RuntimeInformation.FrameworkDescription.Split([' '], StringSplitOptions.RemoveEmptyEntries);
 45             var charSeparators = new[] {','};
 46             var parts = RuntimeInformation.FrameworkDescription.Split(charSeparators,
 47                 StringSplitOptions.RemoveEmptyEntries);
 48             var i = 0;
 49             for (; i < parts.Length; i++)
 50             {
 51                 if (char.IsDigit(parts[i][0]))
 52                 {
 53                     break;
 54                 }
 55             }
 56 
 57             var productName = string.Join("", parts, 0, i);
 58             return string.Join("", productName, " ", GetNetCoreVersion());
 59         }
 60 
 61 
 62         /// <summary>
 63         /// 
 64         /// </summary>
 65         /// <returns></returns>
 66         internal static string GetNetCoreVersion()
 67         {
 68             var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;
 69             var assemblyPath = assembly.CodeBase.Split(new[] {'/', '\\'}, StringSplitOptions.RemoveEmptyEntries);
 70             var netCoreAppIndex = Array.IndexOf(assemblyPath, "Microsoft.NETCore.App");
 71             if (netCoreAppIndex > 0 && netCoreAppIndex < assemblyPath.Length - 2)
 72                 return assemblyPath[netCoreAppIndex + 1];
 73             return null;
 74         }
 75 
 76 
 77         
 78         /// <summary>
 79         /// 
 80         /// </summary>
 81         /// <returns></returns>
 82         public static PlatformInformation GetPlatformInformation()
 83         {
 84             OSPlatform platform;
 85 
 86             if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
 87                 platform = OSPlatform.Windows;
 88             if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
 89                 platform = OSPlatform.Linux;
 90             if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
 91                 platform = OSPlatform.OSX;
 92             return new PlatformInformation()
 93             {
 94                 Architecture = RuntimeInformation.OSArchitecture,
 95                 DotnetVersion = GetNetCoreVersion(),
 96                 Os = platform,
 97                 OsVersion = RuntimeInformation.OSDescription
 98                 
 99             };
100         }
101     }
102 }