![]() Now, we get an acceptance test file tests/acceptance/HelloWorldCept.php, with the following content: wantTo('perform actions and see result') ![]() $ php vendor/bin/codecept generate:cept acceptance HelloWorld Now, try to add a standard acceptance Hello World test. It looks like we can start writing our tests. So how do you install Codeception? It is as simple as it gets: $ composer require "codeception/codeception"Īfter installing, you will find a new folder named tests in your project, and there will be some subfolders named acceptance, functional and unit. At first, I was skeptical, as we often are when it comes to something new (this project is five years old, so technically, it can’t be considered “new”), but after playing around with it for a couple of days, I concluded Codeception is a very useful and powerful system. A while ago, I decided to find something more useful than PHPUnit I wanted to be better at testing my code, but I didn’t want to read and learn tons of documentation and look for pitfalls. I used to be one such developer I found using different systems for different types of tests too difficult and time-consuming. Many developers use unit tests and claim that’s enough. However, this division is conditional and sometimes it is difficult to resist the temptation of mixing different kinds of tests. Acceptance testing involves testing the entire building as a complete product: Open the door, go inside, shut the door, switch on the light, climb to the second floor and take a look at the garden outside the building. Functional tests can be likened to tests on a single wall of the building, to check whether or not the interior is protected from the elements, and whether or not it possible to see the sun through the window. The idea of integrational tests is to check how tightly and accurately the bricks adhere to each other, how they’re integrated into a certain element of the building. Each brick has to meet specified requirements it has to withstand the required load, have a specific volume and shape, and so on. A building is composed of small blocks that form walls. To clarify, let’s say we illustrate the process with something tangible, such as a building. Acceptance testing: In most cases acceptance testing means checking if the application meets all client requirements.Functional testing: Tests specific requests to your application: browser response, database changes and so on.This test should also check how different classes are interacting. Integrational testing: Integrational tests check a part of your application, they may contain several classes or methods, but should be restricted to one feature.Unit tests: Low-level tests that check small pieces of your code - your class’ methods isolated from other code. ![]() We can say that testing is a small but crucial investment in the future. Besides, even well-written tests may sometimes be used in documentation because there you can see how typical scenarios unfold and check expected behavior. However, you can be sure that your code will be changed afterward (by fixing errors, or adding new features), so your code still will be free of errors described in the test. Spaghetti code remains spaghetti code even when you use test cases. The errors might be inside your test cases. You can’t get rid of all your errors with testing, but you can describe expected behavior in test cases. But, can you imagine how long bug fixing will take after you add new functionality to your project? What Does Testing Solve?įirst, let’s decide what sort of problems may be solved through testing. You can excuse yourself by saying that you already have a dedicated test department, a group of people who conduct tests and write new ones when needed.
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