Without a safety net, code changes can be perilous.
A lack of true unit tests is a reality for many teams and it prevents them from fully empowering their business leaders. Code changes are simply too slow, too costly, and too risky.
With Test4z, a component of the Broadcom Mainframe DevOps Suite, teams address this liability by equipping COBOL developers to do unit testing right.
"Does the change perform as expected?"
Answer YES with confidence!
6 Core Principles
Test4z is built on the 6 core unit testing principles, the gold standard:
Keep Tests Small
Units should be the smallest testable part of the program. Test4z enables ‘microtests’ at the paragraph or section level.
It’s essential to run tests in isolation from the rest of the system. Test4z offers advanced mocking capabilities across code, data, and subsystems.
Tests should be easy to maintain. With Test4z, unit tests are maintained just like application code; they’re easily edited with updates to logic and variables. Templates help developers write clear, readable, and maintainable tests quickly.
Whether using mainframe or distributed CI tools, automation must be simple. Test4z offers a convenient CLI that makes automation simple for developers. Swift and repeatable execution of tests via continuous integration provides developers with a rapid feedback loop.
Keeping tests independent means the outcome of one test should not affect the outcome of another. In addition to native record/replay capabilities with automatic data capture, the Test4z CLI enables tests to be self-contained and run anywhere.
Alignment on code coverage between devs and managers is critical. Test4z offers native coverage visibility and nothing else needs to be installed.
Test4z Developer Experience
Test4z offers COBOL developers an intuitive, friction-free experience. With Test4z, it’s easy to author and maintain tests.
- Those who prefer VS Code/Code4z use the Unit Test for Mainframe extension (see demo video below)
- Those who prefer Eclipse or other IDEs use the Test4z CLI
- Those who prefer ISPF connect to Test4z directly
With Test4z, the tests are code, co-located with the application source. An API portfolio, which serves as an abstraction layer to simplify test case authoring, and a Runtime that executes tests and captures code coverage enable developers to easily apply the 6 Core Principles.
And tests can be run on any LPAR, including ZD&T, using Team Build, which is part of the solution.
Test4z is simple for devs to understand and use and there are no other tooling prerequisites.
See the VS Code Experience in Action
The benefits of unit testing done right propagate. Test4z unit tests can be reused for integration testing, regression testing, and other forms of functional testing in a CI/CD pipeline. Following this “golden path” ensures code quality, maintainability, and overall project success.
What our customers are saying
I LOVE this project!!!
Our Principal Director was amazed by the tool and its simplicity.
Finally, a tool for the mainframe that works like the distributed world.
You've got the right product, vision & talent.
This is AWESOME!!!
No other solution like this exists.
By institutionalizing unit testing best practices with Test4z (i.e., the 6 Core Principles), teams fortify their code base thereby elevating confidence in code changes and inspiring product owners to find even more creative ways to leverage their mainframe assets.