(Behat\Mink\Exception\ElementNotFoundException)Īnd I fill in "message" with "Lorem Ipsum" # Drupal\DrupalExtension\Context\MinkContext::fillField()Īnd I press "Send message" # Drupal\DrupalExtension\Context\MinkContext::pressButton() When I fill in "name" with "John Doe" # Drupal\DrupalExtension\Context\MinkContext::fillField()Īnd I fill in "mail" with # Drupal\DrupalExtension\Context\MinkContext::fillField()Īnd I fill in "subject" with "Hello world" # Drupal\DrupalExtension\Context\MinkContext::fillField()įorm field with id|name|label|value|placeholder "subject" not found. vendor/bin/behat .The test should fail with an error similar to: Scenario: A visitor can use the site-wide contact form # features/contact-form.feature:8Īnd I am at "contact/feedback" # Drupal\DrupalExtension\Context\MinkContext::assertAtPath() vendor/bin/behat -dl again produces a list of 120+ steps you can use here is a trimmed version of the output: default | Given I am an anonymous userĭefault | Then I (should )see the text :text In the example above, we are updating the configuration file to include this empty context along with others provided by the Drupal Behat Extension. When you initialized Behat, it created a FeatureContext without any step definitions. Steps definitions are provided through Contexts. Drupal\DrupalExtension\Context\DrushContext Drupal\DrupalExtension\Context\MessageContext Drupal\DrupalExtension\Context\MinkContext Drupal\DrupalExtension\Context\DrupalContext Create a behat.yml file at the same level as the Features folder-not inside it-with the following contents: default: You could write your own, but for now, you can use some provided by the Mink extension and the Behat Drupal Extension. vendor/bin/behat -dlĬurrently there are no step definitions, so you shouldn't see any output. You can check which steps definitions are available by running. These are the Step Definitions, PHP code that will execute the tasks required to fulfill the step. This verifies that Behat found the test and tried to execute it, but it is complaining about undefined steps. Type 0 at the prompt to select the None option. Please choose the context to generate snippets: Run the test your output should look similar to this: 1 scenario (1 undefined) This example instructs the browser to visit a page under the "contact/feedback" link, fill in some field values, press a button, and check whether a message is present on the page to verify that the action worked. Behat will read them and execute the corresponding Step Definitions. They are called Steps and they should be written from the perspective of the user performing the action. The sentences that start with the keywords Given, When, and Then indicate the Context, Action, and Outcome, respectively. It consists of several special keywords that, when parsed, will execute commands to emulate a user's interaction with the website. Then I should see the text "Your message has been sent."īehat tests are written in Gherkin, a human-readable format that follows the Context–Action–Outcome pattern. Scenario: A visitor can use the site-wide contact formĪnd I fill in "mail" with I fill in "subject" with "Hello world"Īnd I fill in "message" with "Lorem Ipsum" I should be able to use the site-wide contact form In order to send a message to the site administrators Creata a file contact-form.feature in the features folder with the following content: The file inside that folder should have the. Writing test scenariosīy default, Behat will look for files in the features folder that's created when the project is initialized. Now you are ready to write your first test, for example, to verify that website visitors can leave a message using the site-wide contact form. Instead, you should see an output similar to this: No scenarios This will create two folders and one file, which we will revisit later for now, running behat without the extra parameters should not yield an error. You should get an error, like: FeatureContext context class not found and can not be used Now that you have the tools installed, you should have a behat command available. In layman's terms, Mink allows you to control a browser programmatically to emulate a user's action. Mink allows you to write a test once and execute it in different browser emulators. There are various browser emulators, such as Goutte and Selenium, and they all behave differently and have very different APIs. Because these tests are supposed to emulate user interaction, you can assume they will be executed within a web browser.
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