TestNG tests are executed automatically when we build a maven project. We can also run TestNG tests using Eclipse plugin. What if we don’t have the TestNG plugin installed for our IDE and we want to run some specific tests without doing a complete build. In this case, we can run TestNG test classes from a java main method too.
TestNG Test from Java Main Method
Let’s create a simple TestNG test class and a TestNG listener for our example.
package com.journaldev.main;
import org.testng.annotations.Test;
public class Test5 {
@Test
public void test() {
System.out.println("Running test method");
}
}
package com.journaldev.main;
import org.testng.ISuite;
import org.testng.ISuiteListener;
public class Test5SuiteListener implements ISuiteListener {
@Override
public void onStart(ISuite suite) {
System.out.println("TestNG suite default output directory = "+suite.getOutputDirectory());
}
@Override
public void onFinish(ISuite suite) {
System.out.println("TestNG invoked methods = " +suite.getAllInvokedMethods());
}
}
Now we want to run Test5 class tests and also want to add Test5SuiteListener listener to our TestNG test suite. We can easily do this using org.testng.TestNG class.
package com.journaldev.main;
import org.testng.TestNG;
public class TestNGMainClass {
public static void main(String[] args) {
TestNG testSuite = new TestNG();
testSuite.setTestClasses(new Class[] { Test5.class });
testSuite.addListener(new Test5SuiteListener());
testSuite.setDefaultSuiteName("My Test Suite");
testSuite.setDefaultTestName("My Test");
testSuite.setOutputDirectory("/Users/pankaj/temp/testng-output");
testSuite.run();
}
}
Notice that I am also changing TestNG reporting output directory, setting the test suite and test name.
Just run above class as java application and it should produce following output in the console.
TestNG suite default output directory = /Users/pankaj/temp/testng-output/My Test Suite
Running test method
TestNG invoked methods = [Test5.test()[pri:0, instance:com.journaldev.main.Test5@314c508a] 827084938]
===============================================
My Test Suite
Total tests run: 1, Failures: 0, Skips: 0
===============================================
You should also check for the HTML report generated by above program, it will be something like below image.
That’s all for running TestNG tests from java main method.
getting issue :
Listener com.org.common.triggerpoint.Test5SuiteListener@42110406 must be one of ITestListener, ISuiteListener, IReporter, IAnnotationTransformer, IMethodInterceptor or IInvokedMethodListener
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