Description: Arrange-Act-Assert is a fundamental pattern in behavior-driven development (BDD) used to effectively structure software tests. This approach is based on three key stages: arrange, act, and assert. In the ‘arrange’ phase, the context of the test is established, defining the initial conditions and necessary data to carry out the test. The next stage, ‘act’, involves executing the code or action being tested, which may include invoking functions or interacting with the user interface. Finally, in the ‘assert’ phase, the result of the action performed is verified by comparing the output obtained with the expected output. This pattern not only helps keep tests organized and clear but also promotes collaboration between developers and stakeholders, facilitating the understanding of requirements and expected software behavior. By following this pattern, teams can create more readable and maintainable tests, which in turn improves software quality and reduces the risk of errors in development.
