There is also a way to run a single scenario by just adding a line number where the scenario is defined: vendor/bin/behat features/basic_page.feature:11. If you want to run a specific feature file, run vendor/bin/behat features/basic_page.feature. These words are made available to make your scenarios natural and readable.Īll feature files can be run by vendor/bin/behat. There is not much difference between Then, And, and But. ![]() And - to maintain the connectivity in the scenario.Then - describes what the user sees after taking action.When - includes the action the user takes.Given - details the starting state of the system.Each feature can have many scenarios, which describe the specific behavior of the feature. This file can be named basic_page.feature. Then I should see "Basic page Basic page title has been created" Given I am logged in as a user with the "administrator" roleĪnd I enter "Basic page title" for "edit-title-0-value" To do that, you must have access to the page to fill the fields and save it as an administrator. Let’s imagine that you need to test whether you can add content to the Basic page content type in your site successfully or not. The stories are written in a human-readable language, Gherkin, with the extension. Our goal is to describe the stories in the most effective way. Writing Stories and Running tests with Behat This creates a features/ folder and a bootstrap/FeatureContext.php default context file inside the features/ folder. To initialize the project, run the command: Drupal\DrupalExtension\Context\DrupalContextīase_url: # Replace with your site's URL When Behat runs, it looks for a behat.yml file, which it uses for its configuration. Next, create a file named behat.yml inside the root folder of the project.This is the Behat executable and you will use it to run your tests and get debug information. When it is done, you will also notice a new directory bin/ with a Behat file in it.Next, run composer install command in the terminal.Or inside your composer.json file, add the require statement.Inside the project folder, run the command:.Not only can it install Behat for you, but it will also be able to easily update you to the latest version later when one comes out. The official way to install Behat in your Drupal project is through Composer. Installation and implementation of Behat in Drupal While installing the Behat Drupal extension, you will see a dependency on Mink so make sure you have it installed as well. With Mink, you can use the same test scenario and run it on various browser emulators like Goutte, Selenium, Chrome, Zombie, and more. Once the test cases are written, it needs to be executed and emulate user actions. Mink is an open source browser controller that simulates a test scenario with the web application. ![]() Test cases should be written intuitively, focus on important elements, avoid checking duplicate records and use good grammar. Although writing and understanding the language is easy, the end result should focus on enabling better collaboration, efficiency, automation and traceability. Indentations (using space/tab) and line endings define the structure for the test case. This simple whitespace-based language uses simple language words as keywords. Gherkin also serves as a living documentation and reports can be generated to document each test run. The language used by the Behat tool is Gherkin, which is a business readable and domain-specific language. Because of this, it is easy to get the entire team on the same page as everyone, right from the product owner to the developer, can understand and get continuous feedback about the current scenario. With BDD the tester builds test cases in human-readable language. A BDD approach ensures quality software delivery by focusing on continuous communication and simple text stories. Let’s learn more about Behat, Mink, Gherkin and how to implement it in Drupal.īehat is an open source PHP framework that is used to automate testing by leveraging Behavior Driven Development (BDD). Behat is one such BDD technology that enables automated testing using “ubiquitous language”. Evolving out of agile methodologies, Behavior Driven Development (BDD) technologies leverage this power to the fullest to automate the testing process. The power of stories and good communication empowers a collaborative and efficient software delivery. “There’s nothing in the world more powerful than a good story”, said the king of wit and wisdom, Tyrion Lannister.
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