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

Ruby assumes that developers test when writing their programs,but very few people do.


# Making tests work in our favor
To make testing work in our favor, there are a few things that need to happen.

1. We have to know how to write tests.
2. Our company has to understand and buy into testing.
3. Our colleagues need to know how to write tests.

Running into difficulties when testing in Ruby is common. Writing tests is sometimes more challenging than writing code if we don’t know what we’re doing. Every Ruby developer that has tried venturing into testing has faced this same challenge.


# Testing mindset

Testing is a vast topic, with many contradictory opinions on how to do it right. 

Most of us like to think in terms of solutions, challenges, and technical issues. It’s what we’re good at, or we think we are. But, if we want to learn how to do testing right, we need a different mindset. We need to think differently about the code we write—we need to determine the why before knowing the how.


Let’s learn about the testing mindset.


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

Testing

Making tests work in our favor