Gain insights into good testing practices in Ruby on Rails. Learn the testing mindset, convert requirements into user stories, and master feature, request, and unit tests for comprehensive coverage.

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This course aims to teach you how to write better Rails applications by applying good testing practices. You’ll learn about the reasoning behind testing and the process of applying good testing practices. 

In the first half of the course, you’ll learn about the testing mindset and understand its importance. Next, you’ll learn to turn business requirements into user stories. These user stories will become the basis of the code and tests you’ll write.

Once you understand the reasoning and process, you’ll proceed to write the actual tests. You’ll test what is most important to the end user first. So, the first set of tests you’ll learn to write will be feature tests. Finally, you’ll learn to write request tests and unit tests ensuring end-to-end coverage of our application.

Bulletproof Ruby on Rails Applications

**(True or False)** The order of the testing layers in the testing wheel isn’t important.


(True or False) The order of the testing layers in the testing wheel isn’t important.

**(True or False)** The deepest layer of the testing wheel is the least important to the end-user.

(True or False) The deepest layer of the testing wheel is the least important to the end-user.

It tests what happens behind the scenes, such as API request handling or saving to the database

It tests isolated components of the application

It tests what the user can see, and how the application behaves from the user's point of view

It tests every part of the application in a comprehensive manner

What does the feature layer test?

**(True or False)** The unit layer of the testing wheel is where we fine-tune the application's behavior.

(True or False) The unit layer of the testing wheel is where we fine-tune the application’s behavior.

Test your understanding of the planning phase.

Before We Start

The Why Behind Testing

The How Behind Testing

Planning

The Feature Layer

The Request Layer

The Unit Layer

Create a Bill Split Application Using Ruby on Rails

Conclusion

Quiz: Planning