what does devops recommend shift left testing principle
Answers
Answer:
Shift Left is a practice intended to find and prevent defects early in the software delivery process. The idea is to improve quality by moving tasks to the left as early in the lifecycle as possible. Shift Left testing means testing earlier in the software development process.
Answer:
Shift Left is a practice intended to find and prevent defects early in the software delivery process. The idea is to improve quality by moving tasks to the left as early in the lifecycle as possible. Shift Left testing means testing earlier in the software development process.
Why Shift Left?
In the traditional software development model, requirements are kept on the left side of the plan, and the delivery and testing requirements on the right. The problem is that these practices can’t handle changing expectations and requirements, resulting in negative outcomes for the business such as:
Increased costs
Increased time to market
Unexpected errors
Cost alone is a very strong incentive for shifting your testing to the left. Estimates indicate that over half of all software defects could be identified during the requirements phase, with less than 10% emerging during the development phase of the lifecycle. The cost of resolving these defects works in reverse:
A defect that is removed after the product has gone into product will cost around 100 times more than one that is identified and removed during the requirements phase.
Research from the Ponemon Institute, in 2017, found that if vulnerabilities get detected in the early development process, they may cost around $80 on an average. But the same vulnerabilities may cost around $7,600 to fix if detected after they have moved into production.
The Shift left approach emphasizes the need for developers to concentrate on quality from their earliest stage of a software build, rather than waiting for errors and bugs to be found late in the SDLC. Shifting left enables product teams perform daily tasks like:
Testing
Providing feedback
Reviewing changes and progress
Is Shift Left always appropriate?
A Shift Left testing approach may not always be able to deliver optimal performance and functioning in a real-world environment. In such situations, a Shift Right testing strategy may help to:
Enhance customer experience
Provide scope for implementation of test automation
Ensure better test coverage
Shift Right initiates testing from the right, i.e., post-production. In this Shift Right practice, you’ll test a completely built and functioning application to ensure performance and usability traits. Reviews and feedbacks from targeted users further help in enhancing the quality of the software.
An important characteristic of the Shift Right approach is a willingness to:
Validate a hypothesis by trying out new solutions
Collaborate with customers to determine what is working (instead of working from assumptions)
Continuous feedback from users may help in responding better to software failures.
How to move to Shift Left
There are some key strategies that will help you shift left with your software testing:
Demand planning
Test analysts will engage with business and operational stakeholders, providing a forward view of demand. Having this view enables you to—ahead of time—plan and finalize:
The budget
Resourcing
Test strategies
Demand planning is an integral part of the shift left approach and provides a starting point for all other activities in the test lifecycle.