Spring GDS 25th Anniversary
A logistics company that ships to 190 countries built something to ship to itself.
Test case
What is a test case?
A test case is a documented set of conditions, inputs, and expected outcomes used to verify that one specific part of a system behaves the way it should. It's the atomic unit of structured testing: the precise scenario a tester runs, by hand or in code, to decide whether a feature passes or fails against a requirement.
A typical test case spells out a precondition, the state the system has to be in first, the steps to execute, the expected result, and the actual result observed. Comparing expected against actual is what produces a pass or a fail. For a login form, one case might be: user enters valid credentials, clicks submit, expects redirect to dashboard. Another covers the wrong password and expects a clear error, not a crash. Cases run manually or through automated frameworks, and automated ones earn their keep in continuous integration, where they fire on every code change without anyone remembering to press go.
A good test case is specific, repeatable, and independent of every other test. One case shouldn't depend on another having run first. Group enough of them and you get a test suite that covers a system's behaviour as a whole, which is how a team knows a release is safe rather than hoping it is.
Test cases at Dallonses
We write test cases against the acceptance criteria agreed at the start of a feature, so "passing" means meeting what the client actually asked for, not what we assumed. Quality assurance isn't a phase we bolt on at the end. It lives inside every definition of done, and a feature that fails its cases doesn't ship until it doesn't.
The cases that can run on their own become automated tests in the CI pipeline, catching regressions the moment they appear. Our software quality assurance work keeps that suite honest as a product grows, so the hundredth release is as safe as the first. Fewer surprises in production. A client who can trust the green checkmark.
Shipping something that has to hold up under real use? Let's make the tests prove it.
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