Drupal 7 Module Development

Creating Your First Module
The report above shows us that all four of our assertions were run (two for each test),
and that all passed.
Should a test not pass, it will be displayed in red, with the status flag set to a red X
instead of a green checkmark. A warning message may be displayed, too (depending
on the error or failure).
Summary
We have now completed an end-to-end walk through the creation of a module. We
began by creating the module directory, followed by the .info file. Next, we added a
.module file and implemented three hooks, taking advantage of several core Drupal
functions in the process. Finally, we wrote our first test for this module, learning
about Drupal's OO testing framework as we went.
Along the way, we learned about basic coding guidelines, translation support, the
mechanics of hooks, and using the block API.
In subsequent chapters, we will build on this knowledge to create more powerful
modules, making use of the database layer, the menu system, nodes, and other tools.
In the next few chapters, we will look at the theme system, a powerful and extensible
mechanism for structuring and formatting output.
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