drupal modules Learning Test Case Basics by Writing a Hello World Test

In this lesson we'll write a hello world test that navigates to the front page of a standard Drupal installation and verifies the existence of the text, "No front page content has been created yet.". This will allow us to walk through creating a .test file, adding it to our modules .info file, as well as cover the basics of extending DrupalWebTestCase to write our own test case. For this lesson we'll use the helloworld sample module as a starting point and expand it to add a very basic test. The goal being to gain a better understanding of how the SimpleTest module discovers, and runs our tests. Then in future lessons we can expand on our test case to add more robust features.

All SimpleTest tests are an extension of either the DrupalWebTestCase (we'll focus on this one), or the DrupalUnitTestCase base classes. There are two pieces to the discover process. Writing a new class that extends one of the base classes, and then declaring the file that contains this new class in your module's .info file so that the file and it's code are indexed and inserted into the registry.

Create a new file inside the helloworld module's directory: tests/helloworld.test. The convention is to name files that contain test classes with a .test extension. Similar to how module file, despite being purely PHP, are named with a .module extension.

drupal modules Learning Test Case Basics by Writing a Hello World Test
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