如何将单元测试应用于需要用户动态输入的C#函数? [英] How do I apply unit testing to C# function which requires user input dynamically?

问题描述

下面的功能从用户那里获取输入.我需要使用Unit Testing测试此功能.谁能告诉我如何测试这种需要用户动态输入的功能.谢谢

The function below gets input from the user. I need to test this function using Unit Testing. Can anyone tell me how to test this kind of function which require user input dynamically. Thanks

像boundary value analysis ...

numberOfCommands应该是(0 <= n <= 100)

public static int Get_Commands()
{
    do
    {
        string noOfCommands = Console.ReadLine().Trim();
        numberOfCommands = int.Parse(noOfCommands);             
    }
    while (numberOfCommands <= 0 || numberOfCommands >= 100);  

    return numberOfCommands;
}

以编程方式提示将大有帮助！

Programmatically hint will be great help!

推荐答案

创建一个接口，并传入该接口以接收文本.然后，在单元测试中，传递一个模拟接口，该接口会自动返回一些结果.

Create an interface and pass in the interface to receive text. Then, in your unit test, pass in a mock interface that automatically returns some result.

编辑代码详细信息:

public interface IUserInput{
    string GetInput();
}

public static int Get_Commands(IUserInput input){
    do{
       string noOfCommands = input.GetInput();
       // Rest of code here
    }
 }

public class Something : IUserInput{
     public string GetInput(){
           return Console.ReadLine().Trim();
     }
 }

 // Unit Test
 private class FakeUserInput : IUserInput{
      public string GetInput(){
           return "ABC_123";
      }
 }
 public void TestThisCode(){
    GetCommands(new FakeUserInput());
 }

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