Re-run failed tests Automatically | TestNG | Log4J

Here, I've used Maven for Test Execution; Make sure Log4J dependency added in your POM.xml file. You must run your tests on TestNG framework to achieve this.

Please find the optimized test in my GIT with the use case mentioned below| https://github.com/prashanth-sams/re-runFailedTests

1| Assume you have a class file with 10 Methods [@Test]
2| Lets say one got failed due to Network issue
3| The class file, RetryAnalyzer will make the failed test-case to re-run with desired count; But, it display errors for all the test failures during re-run. [Explained in this post]
4| You are ought to add a Listener class, RetryTestListener; it will print the failure only once.
5| If the test got passed in the final count, failure exception won't be thrown in the console.

Note| 

Steps 4 and 5 are missing in this post; Find it in GIT.

Test Class

@BeforeTest
public void setUp()
{
driver = new FirefoxDriver();
baseUrl = "https://www.google.co.in";
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
}

@Test(retryAnalyzer=RetryAnalyzer.class)
public void test01() throws Exception
{
driver.get(baseUrl + "/");
String save = driver.findElement(By.id("als")).getText();
System.out.println(save);
        // Assert.fail();
Assert.assertEquals(save, "qwerty");
}

RetryAnalyzer.java

Create a Java class, 'RetryAnalyzer' inside the same package and paste the following snippet with minor edits.

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import org.testng.IRetryAnalyzer;
import org.testng.ITestResult;

public class RetryAnalyzer implements IRetryAnalyzer  { 
private int count = 0; 
private int maxCount = 4; // set your count to re-run test
protected Logger log;
private static Logger testbaseLog;

static {
    PropertyConfigurator.configure("test-config/log4j.properties");
    testbaseLog = Logger.getLogger("TestclassName");
}

public RetryAnalyzer()
{
    testbaseLog.trace( " ModeledRetryAnalyzer constructor " + this.getClass().getName() );
    log = Logger.getLogger("TestclassName");
}

@Override 
public boolean retry(ITestResult result) { 
    testbaseLog.trace("running retry logic for  '" 
            + result.getName() 
            + "' on class " + this.getClass().getName() );
        if(count < maxCount) {                     
                count++;                                    
                return true; 
        } 
        return false; 
}
}


POM.xml

<dependencies>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>6.8.7</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>2.37.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>            
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.16</version>
<configuration>
<suiteXmlFiles>
<suiteXmlFile>${basedir}/src/test/java/abilash/yourxmlfile.xml</suiteXmlFile>
</suiteXmlFiles>
</configuration>
</plugin>  
</plugins>
</build>


P.S| TestNG will create a xml file, 'testng-failed.xml' after your test failure; It contains all the failed test Methods. It can be used to re-run your Failed tests manually.