TestNG Tutorials 64: Dependency in TestNG – ignoreMissingDependencies – Another Way of Achieving Soft Dependencies

Hello Folks,

There are two types of dependencies in TestNG:

1. Hard Dependency : All the methods you depend on must have run and succeeded for you to run. If at least one failure occurred in your dependencies, you will not be invoked and marked as a SKIP in the report.

2. Soft Dependency : You will always be run after the methods you depend on, even if some of them have failed. This is useful when you just want to make sure that your test methods are run in a certain order but their success doesn’t really depend on the success of others. A soft dependency is obtained by adding “alwaysRun=true” in your @Test annotation.

You can go through about above concept in this post.

But consider below scenarios:

How you will run your test which depends on another tests and that tests does not exist always or need to execute based on some conditions?
How you will run your test which depends on another tests which are marked false for “enabled” attribute.

First, let’s see what happens when you run a test which depends on another test and that test is missing.

package Dependency;


import org.testng.annotations.Test;

public class HardDependeny {
        
        
        /*
         * This test method depends on another test method named "Test1" which does not exist.        
         */
        @Test(dependsOnMethods= {"Test1"})
        public void Test2()
        {
                System.out.println("I am Test2");
        }
        
        
}

Output:

[java] [RemoteTestNG] detected TestNG version 6.14.2 org.testng.TestNGException: Dependecy.HardDependeny.Test2() depends on nonexistent method Test1 at org.testng.internal.MethodHelper.findDependedUponMethods(MethodHelper.java:114) at org.testng.internal.MethodHelper.topologicalSort(MethodHelper.java:241) at org.testng.internal.MethodHelper.sortMethods(MethodHelper.java:317) at org.testng.internal.MethodHelper.collectAndOrderMethods(MethodHelper.java:64) at org.testng.TestRunner.initMethods(TestRunner.java:438) at org.testng.TestRunner.init(TestRunner.java:271) at org.testng.TestRunner.init(TestRunner.java:241) at org.testng.TestRunner.(TestRunner.java:192) at org.testng.remote.support.RemoteTestNG6_12$1.newTestRunner(RemoteTestNG6_12.java:33) at org.testng.remote.support.RemoteTestNG6_12$DelegatingTestRunnerFactory.newTestRunner(RemoteTestNG6_12.java:66) at org.testng.SuiteRunner$ProxyTestRunnerFactory.newTestRunner(SuiteRunner.java:713) at org.testng.SuiteRunner.init(SuiteRunner.java:260) at org.testng.SuiteRunner.(SuiteRunner.java:198) at org.testng.TestNG.createSuiteRunner(TestNG.java:1295) at org.testng.TestNG.createSuiteRunners(TestNG.java:1273) at org.testng.TestNG.runSuitesLocally(TestNG.java:1128) at org.testng.TestNG.runSuites(TestNG.java:1049) at org.testng.TestNG.run(TestNG.java:1017) at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114) at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)

at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

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