How to Scale Automated Testing With Jenkins

Jenkins is a popular CI tool — and you should be scaling Jenkins with test automation. 

Throughout the different stages of DevOps, software development processes must rely on a stable test environment. Teams need stable test automation that can cover their ever-changing web and mobile apps continuously within the CI/CD pipeline. Testing that is well-integrated into the CI/CD pipeline results in faster releases, integration validations, and unified visibility to stakeholders.

Keep reading to learn how to create a foundation of continuous test automation that can scale with Jenkins.

What is Jenkins Testing?

Jenkins is a popular continuous integration and continuous delivery (CI/CD) platform that contains all the elements necessary to automate an application build, test executions, and eventual application deployment.  

Teams can install Jenkins through native system packages, container solutions like Docker, and on any machine that has installed a Java Runtime Environment (JRE). In the third case, Jenkins would run as a standalone solution.

Why Use Jenkins for Automated Testing?

Jenkins is a popular CI/CD platform that integrates with a wide array of test automation frameworks and tools to bring them into a single testing pipeline. With its multiple plugins, Jenkins enables teams to automate test suite executions, while also offering deeper insights into failures by gathering dashboard results.   

 

Understanding DevOps & CI/CD/CT

CI/CD/CT enables an efficient pipeline and DevOps software delivery chain.

DevOps

DevOps is a compound of development and operations, or a union of people, processes, and technology. These elements work together to continuously provide value to customers at a scale across different geographies and across different platforms.

CI/CD

To deliver value continuously, it takes developers, Ops personnel, test engineers, a product team, the business, and everyone. But to make that a reality, you have to have a good, solid pipeline, otherwise known as the CI/CD pipeline. To have a good development pipeline, you need to have a gate at each phase to provide solid validation. This lets you know that you can transition onto the next phase confidently.

In DevOps and Agile, you want to have constant checks and feedback loops being sent back to the developers as early and as soon as possible. This is also known as shift left testing, or sometimes shifting right.

Where Continuous Testing Fits In

The glue that unites CI and CD is CT, otherwise known as continuous testing. It ensures that you are able to perform test automation that brings you value and that you can trust.

Continuous testing depends on test automation, but it's more than just test automation. It's also the unification of different tools, technologies, and personas. To do continuous testing and enable an efficient CI/CD, you need to be testing at each and every gate and phase in your development pipeline. This includes testing in planning, in the build acceptance test, in the building of the software, and when you do beta acceptance testing, as well as during the release and post-release in production.

Challenges of Jenkins Automation Testing

Unfortunately, the reality is that there are a lot of gaps in the process of continuous testing that slow down test automation engineers. There are a lot of challenges that impact the automation coverage, the automation stability, and the feedback loop, including:

• Advanced testing scenarios that are difficult to automate.
• Automation skillsets lacking in team members.
• Time-consuming test maintenance.
• Low digital platform coverage.
• Lack of time to automate.
• Challenging test environments to set up.
• Time spent to analyze reports.

There are a lot of complexities in CI/CD/CT and you need to be strategic with those. You need to have a common understanding and a full collaboration between developers, test automation engineers, business testers, product management, and product owners. By aligning everyone, you can overcome these challenges — otherwise you risk escaped defects to production.

Emerging Technologies Compound Challenges

As if these challenges aren't enough, we are also living in a continuously changing digital reality. New technology that testing teams must keep up with includes:

• Foldable smartphones
• Fragmentation
• Progressive web growth and adoption
• New automation frameworks like Flutter and Cypress
• APKs in Android
• App Clips in iOS
• And more.

New technologies like these are constantly being introduced to the market and have a huge implications on what's happening to your test automation environment. Maintenance needs to be baked into your processes, whether or not you made any change to your native or hybrid application.

Strategy for Scaling Automated Testing With Jenkins

If you want to start building out your continuous testing activities and merging them into the pipeline with Jenkins, here’s where to start.

Build In Quality

If you want to establish a strong strategy for scaling continuous testing in DevOps, you need to build in quality by testing early. You need to have a good certified test automation that you can reliably execute prior to embedding it into Jenkins.
You also need to have visibility into features, into the story points to have access to the Jira design activities, and the product requirements so you can start building testing inside the cycle earlier.

Communication Across the 3 Personas

These activities need to happen in parallel across the three main personas:

• The business tester.
• The SDET (software developer in testing).
• The software developer.

They need to have a solid communication layer that addresses what is supported, product requirements, and timeline. These three personas also need to provide each other access to the frameworks, to the environments, and to the data that is going to be used to build the test cases and anything that can support test creation.

Prioritize Automation

Which tests should you automate? Approach this question strategically. For a test automation strategy, think about the skill sets of your three personas: the business tester, SDET, and developer, and match technology to each skillset.

You’ll also want to consider the following questions. What is in the scope of the sprint to automate? What are the objectives? What are you trying to get out of the test automation investment? 

Map out the top scenarios on your app based on business needs. For example, these could include functions such as:

• Log in.
• Pay a bill.
• Transfer funds.

Charting these out like the example above will help you prioritize the most critical scenarios for testing. It’s a straightforward way to determine what needs to be automated and what needs to happen inside the cycle. The top scenarios that are impacting your customers and are mostly being used — these are the ones that need to be closely examined.

Parallel Testing

The next consideration is parallel testing. Parallel testing is key for increasing coverage to get the execution speed to the highest level and to obtain fast feedback. You do parallel testing for a reason, and you invest in having a solid test automation foundation that you can pass running in parallel upon each code change because of these three benefits:

• Increased coverage.
• Faster execution speed.
• Faster feedback.

These should be your objectives. Parallel testing is done not just to get the job done faster. It's also to put more coverage into the cycle and to get feedback much faster to the developers so you can meet sprint deadlines.

See Jenkins Test Automation in Action

Now that you know what’s required for automated testing at scale with Jenkins, see it in action.

See a solid, reliable pipeline, running trusted test automation across 16 different devices running a single test form within Jenkins across different phases. Watch an example of testing with Jenkins and Perfecto at 41:21 in the video below.

Perfecto Makes Automated Testing With Jenkins Better

High-value testing that’s easily scalable is what Perfecto does best.

Automate tests, synch seamlessly with Jenkins and other tools, and execute in parallel on web browsers and mobile devices. You can do all of this in Perfecto’s testing cloud.

With Perfecto, you can…

• Scale testing across platforms.
• Find and fix bugs faster.
• Integrate into your CI/CD pipeline.
• Extend test coverage.

Give it a try today. Start your free two-week trial today.

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