#PHPUNIT MOCKS VS STUBS HOW TO#
#PHPUNIT MOCKS VS STUBS CODE#
#PHPUNIT MOCKS VS STUBS WINDOWS#

The third and fourth lines of code test getYesNoAnswer. It stubs out readUserInput method and sets up two return values upon subsequent calls, 'yes' followed by 'junk'. The second line of code creates the stubbing behavior. The getMockBuilder invokes setMethods to request that only readUserInput be stubbed out. For this example, we want to test getYesNoAnswer, so it can't be stubbed out. One of these defaults is to stub out all the methods. createMock is a shortcut for calling getMockBuilder with defaults. The first line of code creates the stub and it uses getMockBuilder instead of createMock.

php mysqli affected rows returns 0 when it should return a positive integerĬlass AnswerTest extends PHPUnit_Framework_TestCase.

#PHPUNIT MOCKS VS STUBS HOW TO#

How to use private repositories with Composer.Type juggling and Non-Strict Comparison Issues.Alternative Syntax for Control Structures.

#PHPUNIT MOCKS VS STUBS WINDOWS#

Installing a PHP environment on Windows.

How can you override the return of a protected method from your test? When testing a method with an underlying call to a protected method that you’d like to mock, one easy solution is to simply create a class extending the mocked class. Oftentimes you will find yourself dealing with protected and private methods. Here are a couple of Mockito scenarios we had to work around.

For example, when we call the bakeCake() method, we are confirming that we are in turn calling the mixIngredients() and preheatOven() methods. With a mock, on the other hand, we care about behavior. Instead of sending the alert, we can stub that functionality out and return some other dummy values. I’ll give you an example for the two terms that gave me the most trouble, mocks and stubs.Īn example of a stub would be having a class that sends an alert. Whether or not we choose to interact with the mock to check for behavior doesn’t make it any less of a mock. In other words, they are just fake classes. All of these terms, at the end of the day, are just mocks. While Fowler’s definitions are useful, specifically for more advanced developers, there’s still a lot of debate around these terms. Mocks are objects pre-programmed with expectations that form a specification of the calls they are expected to receive.One form might be an email service that records how many messages were sent. Spies are stubs that also record some information based on how they were called.Stubs provide canned answers to calls made during the test and usually don’t respond at all to anything outside what's programmed in for the test.Fake objects actually have working implementations but usually take some shortcut, which makes them unsuitable for production (an in memory database is a good example).Usually they are just used to fill parameter lists. Dummy objects are passed around but never actually used.Also, here are Martin Fowler’s definitions of some important terms: This helpful stackoverflow page provides a starting point for understanding the difference. It took me some time to grasp the difference between mocks and stubs. Below, I’ll talk about some of the challenges we faced - challenges many others are likely to encounter themselves.īefore doing a deeper dive into mocking, let’s start with some terminology you’re likely to come across. We recently had to start writing unit tests on a project with 0% code coverage.

(Be on the lookout for a future blog post about managing technical debt.) In order for this to work, everyone would have to follow the old boy scout rule, “I will not increase the technical debt.” Slowly but surely, you will see a difference. That means not unit testing, not documenting, not fixing code smells, and a slew of other things. If you ever find yourself desperately trying to increase your code coverage, I would recommend devoting just a small, agreed upon percentage of sprint points to cleaning up technical debt (essentially, any debt you owe to your code for taking shortcuts along the way). (For the record, I believe that you should aim for as much coverage as is necessary to comfortably release your code - not necessarily 80%.) I expect a high level of coverage. The reason is due not only to the sheer number of staff hours but also to the fact that, if your code is anything like mine, your code may reflect bad practices. If you’ve ever been involved in a major effort to go from 0% code coverage to the coveted 80%, you know that it’s no easy task.

Phpunit mocks vs stubs