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How does automation testing helps in shift left approach

How does automation testing help in the Shift Left Approach?

What is the Shift Left Approach?

The "Shift Left" approach trend aims to move testing closer to the beginning of the software development process. A project can reduce the number of issues and improve the quality of the code by testing frequently and early. The objective is to avoid discovering any significant defects that call for code patching during the deployment process.


Here's how automation testing can help in the Shift Left approach:

1.  Automates the common functionalities helps in resource optimisation:

Automated regression testing ensures application stability by retesting existing functionalities after new features or changes are implemented. This catches bugs early, optimizing resources and allowing testers to focus on complex features rather than repetitive tasks, making testing more efficient.


2.  Expanded test coverage:

Automated testing broadens test coverage by running numerous test cases with varied inputs consistently. This allows testers to concentrate on complex and/or new scenarios, leading to improved product quality by uncovering errors missed in manual testing.


3.  Enables early bug detection, reduces the turnaround time:

Automated scripts decrease regression testing time, aiding in early bug detection. By integrating automated tests into continuous integration (CI), it becomes simpler to identify and fix bugs promptly, preventing issues from escalating and reducing later development costs.


4.  Shorter feedback loop:

Automated testing greatly shortens the feedback cycle between development and testing. Automated tests can be run quickly and provide immediate feedback on how well your code change worked. This allows to quickly find and

fix problems, reducing the time from development to bug detection. We can respond to and remediate these production issues quickly.


5.  Improved teamwork:

Automated testing facilitates collaboration between developers and testers. Developers and testers work together to define the test cases and integrate automated testing into the development process to ensure effective automation. This facilitates the development team to execute the automation suite for quick sanity before sending the release for QA. This will help teams identify potential problems early and develop a shared sense of responsibility for quality.


6.  Benefits the continuous integration & delivery (CI/CD):

Integrating CI/CD pipeline, allowing automated tests to run automatically whenever new code changes are committed. The team can ensure all code updates are tested by automating and integrating testing into their CI/CD processes. Some of the benefits are:

  • Smaller Code Changes
  • Fault Isolations
  • More Test Reliability
  • Faster Release Rate
  • Smaller Backlog

Automation testing, integral in shift-left testing, enhances continuous testing efficiency from planning to deployment. Integrated from the start, it defends against errors early in the development cycle, fortifying software quality and reliability.

Conclusion:



Image ALT text: Efforts with Shift left approach

Automated testing supports a shift-left approach by enabling early error detection, shorter feedback loops, improved collaboration, seamless CI/CD integration, test coverage, and efficient regression testing. This shifts the testing process to the left, ensuring bugs are caught earlier in the development lifecycle, resulting in higher software quality and a faster time to market. The bar graph above depicts how automation testing helps the shift left approach. This graph represents that if we implement automation testing early in the project life cycle, it will ultimately help reduce effort after a few sprints (the actual breakeven in the efforts could vary for presentation purposes in the above bar graph) and deliver a high-quality product as maximum defects would have been caught at the initial stages.

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