java.lang.Exception: No tests found matching

Junit测试时报的错误

java.lang.Exception: No tests found matching [{ExactMatcher:fDisplayName=getAllCustomer], {ExactMatcher:fDisplayName=getAllCustomer(com.ds.utils.TestCustomer)], {LeadingIdentifierMatcher:fClassName=com.ds.utils.TestCustomer,fLeadingIdentifier=getAllCustomer]]
from org.junit.internal.requests.ClassRequest@41906a77

at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:40)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createFilteredTest(JUnit4TestLoader.java:77)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:68)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

一般经常遇到的是没写@Test  和方法名定义错误

1.最容易发现的错误，就如报错所说，没有找到test方法就是因为忘记在方法前加 @Test 注解了。

应该是这样：

public class TestCase {
@Test
public void checkSomething() {
//...
}
}

2.使用Maven构建项目时候，pom文件中的JUnit版本和classpath中的版本不一致，删掉一个就好（这种应该没什么人吧。。。）。

3.你可以尝试重启Eclipse或者重建或者刷新项目，重新清理，关闭重新打开项目……有时候是Eclipse的问题。

4.如果是测试方法命名不规范的问题，你可以尝试把方法统一改为 testXXX()，这是JUnit3风格。

5.测试类所在文件夹必须为源文件夹source files，如果不是，选择 'Build path' -> 'Use as a source folder'。

6.看你的测试类是否继承TestCase，如果是，删除继承，并不需要继承，例如：

public class MyTestCase extends TestCase{
@Test
public void checkSomething() {
//...
}
}
//Result> AssertionFailedError: No test Found in MyTestCase

应该是下面的TestCase

public class MyTestCase {
@Test
public void checkSomething() {
//...
}
}
//Works fine

7.有些小伙伴右键选择特定的测试方法会报错，但是运行整个测试类却不会，不信可以试试


8.如果你的Eclipse版本太旧，也会导致，更新版本。

9.最后一个就是我的这个问题：版本不兼容，需要更换JUnit或者spring版本

报错信息具体如下，会有两种

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<span style="font-size:14px;">java.lang.Exception: No tests found matching [{ExactMatcher:fDisplayName=testQueryById], {ExactMatcher:fDisplayName=testQueryById(org.seckill.dao.SeckillDaoTest)], {LeadingIdentifierMatcher:fClassName=org.seckill.dao.SeckillDaoTest,fLeadingIdentifier=testQueryById]] from org.junit.internal.requests.ClassRequest@1698c449  
    at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:35)  
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createFilteredTest(JUnit4TestLoader.java:77)  
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:68)  
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)  
  
</span>  

java.lang.Exception: No tests found matching [{ExactMatcher:fDisplayName=testQueryById], {ExactMatcher:fDisplayName=testQueryById(org.seckill.dao.SeckillDaoTest)], {LeadingIdentifierMatcher:fClassName=org.seckill.dao.SeckillDaoTest,fLeadingIdentifier=testQueryById]] from org.junit.internal.requests.ClassRequest@1698c449
at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:35)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createFilteredTest(JUnit4TestLoader.java:77)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:68)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

或者：

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<span style="font-size:14px;">java.lang.ExceptionInInitializerError  
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)  
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)  
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)  
    at java.lang.reflect.Constructor.newInstance(Constructor.java:408)  
    at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:29)  
    at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:21)  
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)  
    at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)  
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)  
    at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:26)  
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:84)  
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:70)  
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)  
Caused by: java.lang.IllegalStateException: SpringJUnit4ClassRunner requires JUnit 4.12 or higher.  
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.<clinit>(SpringJUnit4ClassRunner.java:102)  
    ... 17 more  
</span>  

java.lang.ExceptionInInitializerError
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:29)
at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:21)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:26)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:84)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:70)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.IllegalStateException: SpringJUnit4ClassRunner requires JUnit 4.12 or higher.
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.<clinit>(SpringJUnit4ClassRunner.java:102)
... 17 more

No tests found matching和ExceptionInInitializerError这两个错误其实都是一个，都是初始化错误，测试用例没有成功。

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<span style="font-size:10px;">package org.seckill.dao;  
  
import javax.annotation.Resource;  
  
import org.junit.Test;  
import org.junit.runner.RunWith;  
import org.seckill.entity.Seckill;  
import org.springframework.test.context.ContextConfiguration;  
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;  
  
/** 
 * project:seckill 
 * @author Daley 下午10:20:28 2016年12月20日 2016 
 * 配置Spring和JUnit整合 ，JUnit启动时加载SpringIOC容器 
 */  
@RunWith(SpringJUnit4ClassRunner.class)  
//告诉JUnitSpring配置文件  
@ContextConfiguration({"classpath:spring/spring-dao.xml"})  
public class SeckillDaoTest {  
    //注入Dao实现类依赖  
    @Resource  
    private SeckillDao seckillDao;  
    @Test  
    public void testQueryById() {  
        long id=1000;  
        Seckill seckill=seckillDao.queryById(id);  
        System.out.println(seckill.getName());  
        System.out.println(seckill);  
    }  
  
}</span>  

package org.seckill.dao;

import javax.annotation.Resource;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.seckill.entity.Seckill;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
* project:seckill
* @author Daley 下午10:20:28 2016年12月20日 2016
* 配置Spring和JUnit整合 ，JUnit启动时加载SpringIOC容器
*/
@RunWith(SpringJUnit4ClassRunner.class)
//告诉JUnitSpring配置文件
@ContextConfiguration({"classpath:spring/spring-dao.xml"})
public class SeckillDaoTest {
//注入Dao实现类依赖
@Resource
private SeckillDao seckillDao;
@Test
public void testQueryById() {
long id=1000;
Seckill seckill=seckillDao.queryById(id);
System.out.println(seckill.getName());
System.out.println(seckill);
}

}

由于试过了很多方法，这时我有了一个最不愿意的怀疑，难道是版本不兼容问题？

于是我把 @RunWith注解删掉，发现这时报的是空指针错误，说明没有加载spring容器，我使用的SpringFramework版本是 4.3.4.RELEASE ，这个是最终版本应该是比较稳定和兼容性好呀，那么问题可能就是JUnit不兼容了，我使用的是JUnit4.10

当我换成4.11时候，还是报错，但是换到最新的4.12版本的时候，这个报错消失了！出现了这个可爱的颜色。



嗯……绿色一定是我的最爱

顺便贴出配置信息：

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<span style="font-size:14px;"><dependency>  
<groupId>junit</groupId>  
<artifactId>junit</artifactId>  
<version>4.12</version>  
</dependency>  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-core</artifactId>  
<version>4.3.4.RELEASE</version>  
</dependency>  
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-context</artifactId>  
<version>4.3.4.RELEASE</version>  
</dependency>  
<!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-beans</artifactId>  
<version>4.3.4.RELEASE</version>  
</dependency>  
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-jdbc</artifactId>  
<version>4.3.4.RELEASE</version>  
</dependency>  
<!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-tx</artifactId>  
<version>4.3.4.RELEASE</version>  
</dependency>  
<!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-web</artifactId>  
<version>4.3.4.RELEASE</version>  
</dependency>  
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-webmvc</artifactId>  
<version>4.3.4.RELEASE</version>  
</dependency>  
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-test</artifactId>  
<version>4.3.4.RELEASE</version>  
</dependency></span>  

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>