JUnit RunListener 示例

JUnit 测试类

我们在下面编写两个测试类仅作为示例。
我们将监视为在这些类中编写的测试而打印的日志。

package com.onitroad.junit;
import junit.framework.Assert;
import org.junit.Test;
public class TestFeatureOne {
	@Test
	public void testFirstFeature()
	{
		Assert.assertTrue(true);
	}
}

package com.onitroad.junit;
import junit.framework.Assert;
import org.junit.Ignore;
import org.junit.Test;
public class TestFeatureTwo {
	@Test
	public void testSecondFeature()
	{
		Assert.assertTrue(true);
	}
	@Test
	@Ignore
	public void testSecondFeatureIngored()
	{
		Assert.assertTrue(true);
	}
}

JUnit 测试监听器

下面这个监听器将扩展 JUnit 提供的 RunListener 类。

我们可以自由地覆盖任意数量的方法 RunListener 类，从不包含任何方法。

package com.onitroad.junit.suite;
import org.junit.runner.Description;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;
import org.junit.runner.notification.RunListener;
public class ExecutionListener extends RunListener
{
	/**
	 * Called before any tests have been run.
	 * */
	public void testRunStarted(Description description)	throws java.lang.Exception
	{
		System.out.println("Number of tests to execute : " + description.testCount());
	}
	/**
	 *  Called when all tests have finished
	 * */
	public void testRunFinished(Result result) throws java.lang.Exception
	{
		System.out.println("Number of tests executed : " + result.getRunCount());
	}
	/**
	 *  Called when an atomic test is about to be started.
	 * */
	public void testStarted(Description description) throws java.lang.Exception
	{
		System.out.println("Starting execution of test case : "+ description.getMethodName());
	}
	/**
	 *  Called when an atomic test has finished, whether the test succeeds or fails.
	 * */
	public void testFinished(Description description) throws java.lang.Exception
	{
		System.out.println("Finished execution of test case : "+ description.getMethodName());
	}
	/**
	 *  Called when an atomic test fails.
	 * */
	public void testFailure(Failure failure) throws java.lang.Exception
	{
		System.out.println("Execution of test case failed : "+ failure.getMessage());
	}
	/**
	 *  Called when a test will not be run, generally because a test method is annotated with Ignore.
	 * */
	public void testIgnored(Description description) throws java.lang.Exception
	{
		System.out.println("Execution of test case ignored : "+ description.getMethodName());
	}
}

JUnit 还支持在通过 RunListener 类执行测试时添加侦听器。
此侦听器可用于从改进日志记录到测试特定逻辑的各种目的。

执行JUnit 监听器

现在，让我们运行测试并观察监听器输出。

package com.onitroad.junit.suite;
import org.junit.runner.JUnitCore;
import com.onitroad.junit.TestFeatureOne;
import com.onitroad.junit.TestFeatureTwo;
public class ExecuteWithRunListener
{
	public static void main(String[] args)
	{
		JUnitCore runner = new JUnitCore();
		//Adding listener here
		runner.addListener(new ExecutionListener());
		runner.run(TestFeatureOne.class, TestFeatureTwo.class);
	}
}