使用命令行从JUnit类运行单个测试 [英] Run single test from a JUnit class using command-line

问题描述

我试图找到一个方法，将允许我从一个JUnit类只使用命令行和java运行单个测试。

我可以运行从类中使用以下的整套测试：

  java -cp .... org.junit.runner.JUnitCore org .package.classname 
  

我真正想做的是这样的：

  java -cp .... org.junit.runner.JUnitCore org.package.classname.method 
  

或：

  java -cp ... 。org.junit.runner.JUnitCore org.package.classname＃method 
  

我注意到使用JUnit注释来做到这一点的方法，但我不想手动修改我的测试类的源（尝试自动化）。我也看到Maven可能有办法做到这一点，但如果可能，我想避免依赖Maven。

所以我想知道是否有任何方式

---

我要找的关键点：

• 能够从JUnit测试类运行单个测试


• 命令行（使用JUnit）


• 避免修改测试来源


• 避免使用其他工具

解决方案

你可以很容易地做一个自定义的，准系统JUnit转轮。下面是一个将以 com.package.TestClass＃methodName 形式运行单个测试方法的方法：

  import org.junit.runner.JUnitCore; 
 import org.junit.runner.Request; 
 import org.junit.runner.Result; 
 
 public class SingleJUnitTestRunner {
 public static void main（String ... args）throws ClassNotFoundException {
 String [] classAndMethod = args [0] .split（＃） ; 
请求request = Request.method（Class.forName（classAndMethod [0]），
 classAndMethod [1]）; 
 
结果result = new JUnitCore（）。run（request）; 
 System.exit（result.wasSuccessful（）？0：1）; 
} 
} 
  

您可以这样调用：

 > java -cp path / to / testclasses：path / to / junit-4.8.2.jar SingleJUnitTestRunner 
 com.mycompany.product.MyTest＃testB 
  

快速查看JUnit源代码后，我得出了与JUnit不支持这个结论相同的结论。这从来没有是我的问题，因为IDEs都有自定义JUnit集成，允许您运行测试方法下的游标，以及其他操作。我从来没有从命令行直接运行JUnit测试;我总是让IDE或构建工具（Ant，Maven）来处理它。特别是因为缺省CLI入口点（JUnitCore）在测试失败时不产生非零退出代码以外的任何结果输出。

I am trying to find an approach that will allow me to run a single test from a JUnit class using only command-line and java.

I can run the whole set of tests from the class using the following:

java -cp .... org.junit.runner.JUnitCore org.package.classname

What I really want to do is something like this:

java -cp .... org.junit.runner.JUnitCore org.package.classname.method

or:

java -cp .... org.junit.runner.JUnitCore org.package.classname#method

I noticed that there might be ways to do this using JUnit annotations, but I would prefer to not modify the source of my test classes by hand (attempting to automate this). I did also see that Maven might have a way to do this, but if possible I would like to avoid depending on Maven.

So I am wondering if there is any way to do this?

---

Key points I'm looking for:

• Ability to run a single test from a JUnit test class
• Command Line (using JUnit)
• Avoid modifying the test source
• Avoid using additional tools

解决方案

You can make a custom, barebones JUnit runner fairly easily. Here's one that will run a single test method in the form com.package.TestClass#methodName:

import org.junit.runner.JUnitCore;
import org.junit.runner.Request;
import org.junit.runner.Result;

public class SingleJUnitTestRunner {
    public static void main(String... args) throws ClassNotFoundException {
        String[] classAndMethod = args[0].split("#");
        Request request = Request.method(Class.forName(classAndMethod[0]),
                classAndMethod[1]);

        Result result = new JUnitCore().run(request);
        System.exit(result.wasSuccessful() ? 0 : 1);
    }
}

You can invoke it like this:

> java -cp path/to/testclasses:path/to/junit-4.8.2.jar SingleJUnitTestRunner 
    com.mycompany.product.MyTest#testB

After a quick look in the JUnit source I came to the same conclusion as you that JUnit does not support this natively. This has never been a problem for me since IDEs all have custom JUnit integrations that allow you to run the test method under the cursor, among other actions. I have never run JUnit tests from the command line directly; I have always let either the IDE or build tool (Ant, Maven) take care of it. Especially since the default CLI entry point (JUnitCore) doesn't produce any result output other than a non-zero exit code on test failure(s).

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