使用Reporter.log（str）将消息记录到报告中。

@AfterMethod
public void printLOGonFailure(ITestResult result) {
    if (result.getStatus() == ITestResult.FAILURE) {
        String  str = getLog();
        Reporter.log(str);
    }
}

This site has a explanation on how to do it.。我在这里复制了代码部分，以防链接失效。

Logger.getLogger(this.getClass())
log4j.rootLogger=ERROR,TESTAPPENDER
log4j.appender.TESTAPPENDER=com.my.fantastic.MockedAppender
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

public class FooTest {
    private Appender appenderMock;
    @Before
    public void setupAppender() {
        appenderMock = mock(Appender.class);
        Logger.getRootLogger().addAppender(appenderMock);
    }
    @After
    public void removeAppender() {
        Logger.getRootLogger().removeAppender(appenderMock);
    }
    @Test
    public void testMethod()  {
        doStuffThatCausesLogging();
        verify(appenderMock).doAppend((LoggingEvent) anyObject());
    }
}

ArgumentCaptor arguments = ArgumentCaptor.forClass(LoggingEvent.class);
verify(appenderMock).doAppend(arguments.capture());

如果是这样的话，那么就可以用一个简单的方法来实现。

实作并注册org.testng.ITestListener，并在回呼方法上回应。

把JMockit放在依赖项中。有了它，日志测试就很容易了。
放入测试类：

@Cascading
final static Logger logging = Logger.getLogger(<some your>.class);

进行测试：

testedFunction(a, b, c);
    new Verifications() {{
        logging.error("The message that should be output");
        logging.info("Another message");
    }};

你可以使用像下面这样的代码：

@AfterMethod
public void printLOGonFailure(ITestResult result) {
    if (result.getStatus() == ITestResult.FAILURE) {
        final Logger logger = Logger.getLogger(Create_Case_from_an_Account.class);
        PropertyConfigurator.configure("C:\\Users\\svcSelenium\\eclipse-workspace\\SeleniumWork\\classes\\log4j.properties");       
        logger.error("Opps!!Test Failed due to:"+result.getThrowable());
    }
}