TestNG新手运行测试遇[TestNG] No tests found问题求助

我是TestNG新手，最近写了一段包含3个测试方法的代码，故意让test2()和test3()执行失败，但在IDE中运行代码时，控制台一直输出“[TestNG] No tests found. Nothing was run”，我没有使用Maven命令行执行。

附上项目结构截图：

以下是我的TestNG代码：

package priority;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestNGRetryFailed {
 @Test
 public void test1() {
 System.out.println("i am insde test 1");
 }
 @Test
 public void test2() {
 System.out.println("i am insde test 2");
 int i=1/0;
 }
 @Test
 public void test3() {
 System.out.println("i am insde test 3");
 Assert.assertTrue(0>1);
 }
}

控制台输出信息如下：

Default suite
Total tests run: 0, Failures: 0, Skips: 0
===============================================[TestNG] No tests found. Nothing was run
Usage: [options] The XML suite files to run
Options:
-configfailurepolicy Configuration failure policy (skip or continue)
-d Output directory
-dataproviderthreadcount Number of threads to use when running data providers
-excludegroups Comma-separated list of group names to exclude
-groups Comma-separated list of group names to be run
-junit JUnit mode Default: false
-listener List of .class files or list of class names implementing ITestListener or ISuiteListener
-methods Comma separated of test methods Default: []
-methodselectors List of .class files or list of class names implementing IMethodSelector
-mixed Mixed mode - autodetect the type of current test and run it with appropriate runner Default: false
-objectfactory List of .class files or list of class names implementing ITestRunnerFactory
-parallel Parallel mode (methods, tests or classes) Possible Values: [tests, methods, classes, instances, none, true, false]
-port The port
-reporter Extended configuration for custom report listener
-suitename Default name of test suite, if not specified in suite definition file or source code
-suitethreadpoolsize Size of the thread pool to use to run suites Default: 1
-testclass The list of test classes
-testjar A jar file containing the tests
-testname Default name of test, if not specified in suitedefinition file or source code
-testnames The list of test names to run
-testrunfactory, -testRunFactory The factory used to create tests
-threadcount Number of threads to use when running tests in parallel
-usedefaultlisteners Whether to use the default listeners Default: true
-log, -verbose Level of verbosity
-xmlpathinjar The full path to the xml file inside the jar file (only valid if -testjar was specified) Default: testng.xml

我来帮你排查这个问题，出现No tests found的提示，本质是TestNG没识别到要执行的测试内容，下面是几个常见的排查方向和解决办法：

• 检查IDE的TestNG环境：先确认你的IDE（不管是IntelliJ还是Eclipse）已经装好了TestNG插件，而且项目里已经正确引入了TestNG的依赖——不管是用Maven/Gradle管理，还是手动添加的jar包，一定要确保它在项目的类路径里。
• 确认运行配置是否正确：很多新手会犯的错是把测试类当成普通Java类来运行（比如右键选了Run 'TestNGRetryFailed.main()'），但你的类里没有main方法啊！正确的做法是右键测试类，选择Run 'TestNGRetryFailed'（IDE会识别这是TestNG测试类，自动用TestNG runner来执行）。
• 检查测试源目录标记：如果你的测试类所在的目录没被IDE标记为“测试源目录”，TestNG也找不到它。比如在IntelliJ里，测试目录应该是蓝色的，要是不对，你可以右键目录→Mark Directory as→Test Sources Root。
• 手动创建testng.xml（推荐）：如果IDE自动识别有问题，咱们手动指定测试类就稳了。创建一个testng.xml文件放在项目根目录，内容如下：

<!DOCTYPE suite SYSTEM "https://testng.org/testng-1.0.dtd" >
<suite name="My Test Suite">
    <test name="Failed Tests Demo">
        <classes>
            <class name="priority.TestNGRetryFailed"/>
        </classes>
    </test>
</suite>

然后右键这个xml文件，选择Run 'testng.xml'，TestNG就会乖乖按照配置执行你的三个测试方法了。

内容的提问来源于stack exchange，提问作者Fayaz