Test Automation During Development

The earlier testing begins, the faster the product will end up in actual operation. That’s why we recommend starting to run automated tests at the very first stages of development.

Unit Tests

During the course of development, programmers create a large amount of interconnected code and, of course, make mistakes. Some make more, some make less – but no one is immune to errors until robots learn how to code. These mistakes include typos and copy-and-paste errors. Programmers may forget to rename variables or mix up the names of classes, tables, and files. The earlier these bugs are eliminated, the faster you can release the product. Unfortunately, we too often find these bugs during the functional testing phase, when programmers spend an order of magnitude more time finding the problematic code than they would have during development.

Unit tests are created to test code. The classes and methods developed by programmers are the subject of these tests. The advantage of unit tests is high execution speed: the entire test suite can usually be run in a few seconds. As a result, programmers can run them as often as needed, for example, before each commit operation.

Performance Lab specialists have mastered the use of tools such as JUnit, PHPUnit, TestNG, and PyTest,and they participate in development projects by creating and maintaining high-quality unit tests.

Acceptance Testing During Development

Because unit tests do not give the developer information about whether business processes are operating correctly, internal acceptance testing is necessary. Techniques to automate acceptance tests for programmers are being actively developed. One of today’s popular methods is Behavior Driven Development (BDD) testing, where tests model the behavior of users of the product. BDD testing is automated using tools such as Cucumber, Calabash, Codeception, Behat, and many others. These tests take longer to run than unit tests, but not excessively long. Therefore, they can also be run before committing code and during nightly builds, if continuous integration is being used.

Performance Lab creates high-quality acceptance tests that let developers be sure that the key business processes in a software product are functional after any change to the code.

Our experience indicates that using test automation during the development stage significantly improves software quality, reduces expenses on testing during later phases, and helps improve the image of developers.

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