Continuous Integration (CI) and Continuous Delivery (CD) are two main DevOps Software Development practices that help organizations to deliver applications in a faster and reliable way. In Continuous Integration, developers regularly merge their code changes into a central repository, after which automated builds and tests are run. Thus developers can find and locate errors quickly, hence improving software quality.
To deliver software updates to the customers faster and frequently with high quality, organizations should include automated software testing into a continuous delivery pipeline. This is the only way to ensure that quality assurance is continuous, agile, and reliable as the rest of the DevOps operation. If automation testing is not part of the continuous delivery pipeline, the code changes that developers write cannot be tested regularly.
Automated Tests have a good role in CI/CD.
Without proper automated tests that run fast, have good coverage, and no erroneous results, there can be no successful CI/CD pipeline.
Automation will produce faster results than a human could produce manually. Through automation, we can run tests in parallel, which speeds the testing process even more. Speed and the avoidance of delays are essential in order to deliver software continuously.
A software should be consistent. Consistency means that software behaves as expected at every stage of the delivery chain. Test automation helps to achieve consistency by avoiding the chance of human error while testing the application
In CI/CD, sometimes we need to adjust to tools and frameworks rapidly when better or more advanced technology arrives. If we have automated tests, then all configurations are done automatically. So that we can migrate to a new technology easily.
Jenkins is a popular open source tool used to achieve continuous integration and build automation. It will execute a predefined list of steps and will send notification in case of success or failure. Jenkins can be extended by adding additional plug-ins based on our need.
How Jenkins automated testing will make the life of an automation tester easier?
Jenkins will allow the user to schedule a test automation script and run them at a specific time.
Jenkins will display the test result trend graph. This graph will contain test failures from the previous build also.
Test Result will contain all information such as the total number of test cases that were executed, time taken to execute the script, passed test and failed test case.
With the help of Jenkins, a tester can find details of test failure. It will display details like an error message and a stack trace.
Jenkins will send test result emails after the execution of the test script. This can be achieved using the Email Notification feature in post-build action.
The integration of GitHub with Jenkins will automate testing and improve software quality. We can integrate Jenkins with GitHub projects by using the GitHub plugin.
This plugin can schedule the build, pull code and data files from the GitHub repository to the Jenkins machine and automatically trigger each build on the Jenkins server.
To create a new job in Jenkins, Click on New Item and then enter the Name for the New Job and choose the Freestyle project.
In the General section, you can give a project description and Configure Git in the Source Code Management Section. It will specify how the source code can be retrieved.
If we are using Git for Source Code Management, we can enter the URL of Git Repository. If the repository is not public, we can add credentials to access it.
Build Triggers– We can configure when and how our build should be triggered.
Build– Operations that we wish to perform can be configured in this section. Here I can give the command for executing the script.
Post Build Actions- Here we can configure the actions to be performed after the completion of the build. Here I configure the email notification after every build.
Based on our configuration, our testing scripts will be taken from Git Repository and will be executed on a daily basis.
The importance of DevOps is visible with the rise of big players such as Amazon Web Services, Azure DevOps Services, or SouceLabs as a cloud testing platform. At ThinkPalm, our experts in DevOps can help your business adapt to the trend of moving complete CI/CD pipeline to the cloud, which results in affordable and reliable infrastructure, better metrics, and easy-to-use GUI with lots of documentation.