![]() The canonical purpose of a unit test is to focus rigidly on a single piece of code, with every invocation of code external to the unit mocked out, preferably by a mocking framework like mockito or jmockit. Coupled with good mutation testing coverage, it’s an invaluable tool to ensure that any change which makes your software produce different output will result in a failed test. ![]() ![]() A good unit test is the canary in the coal mine of evil coding. A key benefit however of working this way is that it strengthens your understanding of the code under construction, invites you to seek out edge cases and protects you against yourself by making it hard to cut corners since badly designed code is often hard, if not impossible to test. A most noble principle, although in practice it’s likely to proceed more hand in hand. In test-driven design (TDD) writing test assumptions should precede writing production code. Unit tests: solitary and limited by design There are many methods to test and not all aims listed above apply equally (or at all) to each method at our disposal. In short: tests lessen the risk that your product is going to make the customer angry or unhappy. They make sure the various pieces of the product fit together.They validate that the code behaves as designed.Tests ensure that changes somewhere in the code do not cause unexpected behaviour elsewhere.Why should we test, other than for the obvious acknowledgement that we are mere fallible mortals? Since this is a blog for serious people who are serious about software I should not have to explain the virtues and importance of solid automated tests but I will do so anyway. You need some way of ensuring that the parts are going to fit together and that you are using the framework properly. SUMMARY: Unit tests are a necessary condition to clean code, but today’s convention-over-configuration frameworks like Spring Boot are often used to build applications consisting of multiple services.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |