Custom logger for TestNG

Another small post on TestNG custom logger. I have a TestNG test suite that runs for hours doing through integration tests. Now at the end of the test run I can see testNG reports and see what failed and what passed, however I get no response during the test run as to if all tests are failing due to some configuration issue or its a normal test run. This is happening due to a fact that its basically only 1 test with DataProvider providing different test parameters. If you have separate tests then yes you will get messages for each test.

Anyhow I wanted a custom TestNG logger which logs a message that I understand at the end of each test and here is a way to do so.


Extend TestListenerAdapter class and override a few methods.

	package com.clearqa.utils;
	import org.testng.ITestResult;
	import org.testng.TestListenerAdapter;
	public class TestNgCustomLogger extends TestListenerAdapter{
	@Override
	public void onTestFailure(ITestResult tr) {
	logToStdOut(tr, "FAILED");
	}
	@Override
	public void onTestSkipped(ITestResult tr) {
	logToStdOut(tr, "SKIPPED");
	}
	@Override
	public void onTestSuccess(ITestResult tr) {
	logToStdOut(tr, "PASS");
	}
	private void logToStdOut(ITestResult tr, String result){
	Object[] parameters = tr.getParameters();
	System.out.println("Test with parameters " + result);
	for(Object o : parameters) {
	System.out.println("\t -" + o.toString());
	}
	}
	}

view raw TestNgCustomLogger.java hosted with ❤ by GitHub

Add a custom Listener to your testng xml config:

	<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >
	<suite name="REST api Integration Tests" verbose="1" data-provider-thread-count="10">
	<listeners>
	<listener class-name="com.clearqa.utils.TestNgCustomLogger" />
	</listeners>
	<test name="Rest API - Json schema validation Tests" >
	<classes>
	<class name="com.clearqa.restapi.test.RestApiITCase" />
	</classes>
	</test>
	</suite>

view raw testng.xml hosted with ❤ by GitHub

and wola I get the much needed indication on the std out:

	$ mvn test-compile failsafe:integration-test
	[INFO] Scanning for projects...
	[INFO]
	[INFO] ------------------------------------------------------------------------
	[INFO] Building XXXX Webapp 1.0.5-SNAPSHOT
	[INFO] ------------------------------------------------------------------------
	[INFO]
	....blah blah blah....
	....blah blah blah....
	[INFO] Failsafe report directory: XXXX\target\failsafe-reports
	-------------------------------------------------------
	T E S T S
	-------------------------------------------------------
	Running TestSuite
	Test with parameters PASS
	-XXXX
	Test with parameters FAILED
	-YYYY
	...
	...

view raw stdout.log hosted with ❤ by GitHub