Selenium testNG annotations

For the fundamentals of testNG framework and the testng.xml content, please refer to my prev blog post.

• selenium-testng (See all the available annotations)

• selenium testNGxml

Let's jump into a sample code to get more understanding on the annotations-

These below 2 classes contains all the details of testNG annotations and the output shows sequence of execution of each annotation.

Below examples also shows difference between @AfterTest and @AfterMethod


1st Class: testcase1

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package annotationpkg; import org.testng.annotations.*; public class testcase1 { @BeforeSuite public void setup() { System.out.println("BeforeSuite:Initiate database connection"); } @BeforeTest public void openurl() { System.out.println("BeforeTest:Open the AUT URL"); } @Test public void tc01() { System.out.println("Test:testcase logic"); } @Test public void tc_report() { System.out.println("Test:testcase report logic"); } @AfterTest public void closeurl() { System.out.println("AfterTest:close the AUT URL"); } @AfterSuite public void closeAll() { System.out.println("AfterSuite:close database connection"); } }

  Another class: testcase2 with @Test, @AfterMethod and @BeforeMethod

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package annotationpkg; import org.testng.annotations.*; public class testcase2 { @BeforeMethod public void openurl() { System.out.println("BeforeMethod:Open the AUT URL"); } @Test public void tc02() { System.out.println("Test:testcase logic"); } @Test public void tc03() { System.out.println("Test:testcase logic"); } @AfterMethod public void closeurl() { System.out.println("AfterMethod:close the AUT URL"); } }

As you can see in above 2 classes, in only one class, I have mentioned @Before and @AfterSuite, as this will be execute only once, so no need to mention in both the classes.

Let's see the xml for the above classes - Name it as testng_annotation.xml

xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="MySuite" parallel="none">
<test name="MyTest1">
    <classes>
      <class name="annotationpkg.testcase1"/>
    </classes>
</test>
<test name="MyTest2">
    <classes>
      <class name="annotationpkg.testcase2"/>
    </classes>
</test>
</suite>

Let's run the above testng_annotation.xml and watch the output

In testcase1, @BeforeTest and @AfterTest willl be executed only once before and after all the methods run (as mentioned under the tag in testng_annotation.xml)

Whereas in testcase2, @BeforeMethod & @AfterMethod will be executed each time a @Test method runs, we have 2 methods tc02 and tc03, so @BeforeMethod & @AfterMethod executed twice.

Let's get into bit more depth about testNG, refer testNG parameterization