Job creation in Jenkins: Workflow

Below are the steps to create a new job in Jenkins:

1. Launch Jenkins by providing the url and port number of Jenkins Server. 

2. Click on New Item to create a new Jenkins Job. Provide the jenkins Job Name and select the project type. Let us select a freestyle project.

3. There are different sections in the jenkins Job which are shown below.

4. Below Flowchart explains the different information we can provide in a jenkins job and what is the role of different sections in a jenkins job.

5. General Section:Job Description is provided in this section. Managing different build Information and adding Parameters used in job are some of the tasks which can be defined in this section. 

6. Source Code Management: This section provide instruction on how to extract latest code in the workspace,  from git, svn or local system.

                   

7. Build Trigger : This section define how the job can be triggered, Whether it is dependent on existing job or is scheduled to run on a fixed time and date periodically.

Build Environment: This section manages the build environment or workspace with option to clean the workflow before build execution or abort/fail a build if it is struck at a step for long period.

 

Build - This is the main section where the actual batch files/ shell command or ant targets are invoked. For testing purpose , we can invoke a maven project in this section. Executing a job means executing the commands provided in the build section.

Post Build Steps - These are post build steps and include activities like archiving artifact or sending a mail with build details or publishing testng/junit test results.

How to execute only failed TestNG tests in Eclipse

While running testNG suite, once we are done with one round of execution of tests in the test suite, It can be helpful to execute only the failed tests during the first round of execution to reduce test failures due to flakiness/synchronization issues.

Below steps shows how to achieve this in eclipse.

• Run the required test suite through eclipse as shown below.

• Once the execution is completed and there are failures in the execution, we may require to rerun the tests.

• Refresh the project. folder test-output should be displayed in the project explorer.

• File testng-failed.xml should be available in the folder.

• Run the test suite in similar manner as shown above, i.e Run As TestNG suite.

Jenkins - Adding a conditional build step.

In Jenkins, at times we may require Jenkins to execute some build step on one condition and another in case of other condition. For e.g: It may be required to run a particular test/batch command on Weekdays and some other batch condition on weekends. We can create a job to perform different tasks based on the condition satisfied. 

To add a conditional build step, follow below steps in Jenkins.

• Navigate to Jenkins>Manage Jenkins>Manage Plugins and go to available tab.
• Search for Conditional buildstep as shown below and click on install without restart.

• It will install the plugin and will show success once installation completes.

• Now the plugin can be used in the Jenkins job as shown below.In the job, add build step as Conditional step (single)

• Provide the conditional step from the list as shown below and execute the build command.