TestNG dependsOnMethods from different class

Question

The dependsOnMethods attribute of the @Test annotation works fine when the test to be depended upon is in the same class as that of the test that has this annotation. But it does not work if the to-be-tested method and depended-upon method are in different classes. Example is as follows:

class c1 {
  @Test
  public void verifyConfig() {
    //verify some test config parameters
  }
}

class c2 {
  @Test(dependsOnMethods={"c1.verifyConfig"})
  public void dotest() {
    //Actual test
  }
}

Is there any way to get around this limitation? One easy way out is to create a test in class c2 that calls c1.verifyConfig(). But this would be too much repetition.

Solution 1

Put the method in a group and use dependsOnGroups.

class c1 {
  @Test(groups={"c1.verifyConfig"})
  public void verifyConfig() {
    //verify some test config parameters
  }
}

class c2 {
  @Test(dependsOnGroups={"c1.verifyConfig"})
  public void dotest() {
    //Actual test
  }
}

It is recommended to verify configuration in a @Before* and throw if something goes wrong there so the tests won't run. This way the tests can focus on just testing.

class c2 {
  @BeforeClass
  public static void verifyConfig() {
    //verify some test config parameters
    //Usually just throw exceptions
    //Assert statements will work
  }

  @Test
  public void dotest() {
    //Actual test
  }
}

Solution 2

DependsOnMethods cannot be used from different class ,To resolve this we can use dependsOnGroups;

Do code change in;

1. dependsOnGroups class;

@Test(groups={"prerequisites" })

public void M1()
{

}

2. class which calls dependsOnGroups;

@Test(dependsOnGroups={"prerequisites"})
public void M2()

{

}

3. xml

<groups>
    <run>
        <include name ="prerequisites"/>
    </run>
</groups>

Solution 3

You can use groups and dependsOnGroups in the TestNG @Test annotation, as described in earlier answers.

However, both classes need to be under the same <test>.

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >

<suite name="Suite" verbose="1" >
  <test name="Test" >
    <classes>
       <class name="c1" />
       <class name="c2" />
    </classes>
  </test>
</suite>

The following will result in an exception when running the test suite.

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >

<suite name="Suite1" verbose="1" >
  <test name="Test1" >
    <classes>
       <class name="c1" />
    </classes>
  </test>

  <test name="Test2">
    <classes>
      <class name="c2" />
    </classes>
  </test>
</suite>