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TestNG

Dependent Tests In TestNG

What are dependencies In TestNG ?

In TestNG there's a feature that allows a test method to depend on a single or a group of test methods and also allows multiple dependencies.

A test or a set of tests are executed before a particular test method, if dependency is applied on it.

Dependency is of two kinds as :

1. Method Dependency

Attribute dependsOnMethods is used.

2. Group Dependency

Attribute dependsOnGroups is used.

Dependency can be applied in following ways :

Single Dependency :

Single Method Dependency :

@Test(dependsOnMethods = { "methodName" })
public void f() {
}

Single Group Dependency :

@Test(dependsOnGroups = { "groupName" })

public void f() {

}

An example of method dependency:

package testNGexamples;

import org.testng.annotations.Test;

public class Single_MethodDependency {

@Test(dependsOnMethods = { "dependingFunction" })
public void dependentFunction() {
System.out.println("This will execute, if dependingFunction() is passed ");
}

@Test
public void dependingFunction() {
System.out.println("This will execute first ");
}
}

Output :

[RemoteTestNG] detected TestNG version 7.4.0
This will execute first .
This will execute, if dependingFunction() is passed .
PASSED: dependentFunction
PASSED: dependingFunction

===============================================
Default test
Tests run: 2, Failures: 0, Skips: 0
===============================================

===============================================
Default suite
Total tests run: 2, Passes: 2, Failures: 0, Skips: 0
===============================================

An example of group dependency:

package testNGexamples;

import org.testng.annotations.Test;

public class Single_GroupDependency {

@Test(dependsOnGroups = { "depends on group" })
public void dependentFunction() {
System.out.println("This will execute if dependent group is executed successfully ");
}

@Test(groups = { "depends on group" })
public void dependendingFunction1() {
System.out.println("dependingFunction1() of a group will execute before the dependentFunction() ");
}

@Test(groups = { "depends on group" })
public void dependendingFunction2() {
System.out.println("dependingFunction2() of a group will execute before the dependentFunction() ");
}
}

Output :

[RemoteTestNG] detected TestNG version 7.4.0
dependingFunction1() of a group will execute before the dependentFunction() .
dependingFunction2() of a group will execute before the dependentFunction() .
This will execute if dependent group is executed successfully .
PASSED: dependendingFunction2
PASSED: dependentFunction
PASSED: dependendingFunction1

===============================================
Default test
Tests run: 3, Failures: 0, Skips: 0
===============================================

===============================================
Default suite
Total tests run: 3, Passes: 3, Failures: 0, Skips: 0
===============================================

Multiple Dependencies :

Multiple Method Dependencies :

@Test(dependsOnMethods = { "methodName1", "methodName2","methodName3" })
public void f() {
}

Multiple Group Dependencies :

@Test(dependsOnGroups = { "groupName1", "groupName2","groupName3" })
public void f() {
}

An example of multiple dependencies:

package testNGexamples;

import org.testng.annotations.Test;

public class MultipleDependencies {

@Test
public void test1() {
System.out.println("test1() will execute before test2() : ");
}

// Multiple method dependency...
@Test(dependsOnMethods = { "test1", "test4" })
public void test2() {
System.out.println("test2() will execute, if test1() and test4() is executed successfully : ");
}

@Test(groups = { "test group 1" })
public void test3() {
System.out.println("test3() of test group 1 will execute before test6() : ");
}

@Test
public void test4() {
System.out.println("test4() will execute before test2() : ");
}

@Test(groups = { "test group 1" })
public void test5() {
System.out.println("test5() of test group 1 will execute before test6() : ");
}

// Multiple group dependency...
@Test(dependsOnGroups = { "test group 1", "test group 2" })
public void test6() {
System.out.println("test6() will execute, if test group 1 and test group 2 is executed successfully : ");
}

@Test(groups = { "test group 2" })
public void test7() {
System.out.println("test7() of test group 2 will execute before test6() : ");
}

@Test(groups = { "test group 2" })
public void test8() {
System.out.println("test8() of test group 2 will execute before test6() : ");
}
}

Output :

[RemoteTestNG] detected TestNG version 7.4.0
test1() will execute before test2() :
test3() of test group 1 will execute before test6() :
test4() will execute before test2() :
test5() of test group 1 will execute before test6() :
test7() of test group 2 will execute before test6() :
test8() of test group 2 will execute before test6() :
test2() will execute, if test1() and test4() is executed successfully :
test6() will execute, if test group 1 and test group 2 is executed successfully :
PASSED: test8
PASSED: test6
PASSED: test3
PASSED: test1
PASSED: test7
PASSED: test4
PASSED: test5
PASSED: test2

===============================================
Default test
Tests run: 8, Failures: 0, Skips: 0
===============================================

===============================================
Default suite
Total tests run: 8, Passes: 8, Failures: 0, Skips: 0
===============================================

Inherited Dependency :

Create a different class of test methods that have to be used for dependencies.

Now use extends to inherit that class and then add dependencies as explained above.

Dependency Using .xml :

Dependencies are added in .xml by using dependencies tag :

</dependencies>

</groups>

An example of .xml dependencies:

.xml file :

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Test-Suite">
<test name="Group Test">
<groups>
<dependencies>
<group name="login" depends-on="openbrowser"></group>
<group name="viewprofile" depends-on="login"></group>
<group name="logout" depends-on="viewprofile"></group>
</dependencies>
</groups>
<classes>
<class name="testNGexamples.DependencyInXML"></class>
</classes>
</test>
</suite>

TestNG class :

package testNGexamples;

import org.testng.annotations.Test;

public class DependencyInXML {

@Test(groups = { "viewprofile" })
public void viewProfile() {
System.out.println("Profile Has Been Viewed :");
}

@Test(groups = { "openbrowser" })
public void openBrowser() {
System.out.println("Open Browser :");
}

@Test(groups = { "login" })
public void logIn() {
System.out.println("Log In First :");
}

@Test(groups = { "logout" })
public void logOut() {
System.out.println("Log Out The Session :");
}
}

Output :

[RemoteTestNG] detected TestNG version 7.4.0
Open Browser :
Log In First :
Profile Has Been Viewed :
Log Out The Session :

===============================================
Test-Suite
Total tests run: 4, Passes: 4, Failures: 0, Skips: 0
===============================================

Refer next page Parallel Execution Of Tests

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