What is the purpose of the testng.xml file?

The testng.xml file has the numerous uses as listed below −

• Test cases are executed in groups.

• Test methods can be included or excluded in the execution.

• The execution of multiple test cases from multiple java class files can be triggered.

• Comprises names of the folder, class, method.

• Capable of triggering parallel execution.

• Test methods belonging to groups can be included or excluded in the execution.

Example

TestNG.xml file

<?xml version = "1.0" encoding = "UTF-8"?> <!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" > <suite name = "Cycle1">    <test name = "Tutorialspoint">    <classes>       <class name = "Test1" />          <methods>             <exclude name= “Login.*”/>          </methods>       </classes>    </test> </suite>

Here as per the xml file, all the test methods with starting name Login will be excluded from test execution.

Example

@Test public void VerifyPay(){    System.out.println("Verify payment is successful”); } @Test public void LoginAdmin(){    System.out.println("Login is successful in admin”); } @Test public void LoginSystem(){    System.out.println("Login is successful”); }

Here as per the java class file, only VerifyPay() will be executed since all methods starting with name Login will be excluded from test execution.