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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

## Why unit testing
Integration tests ensure that all our code works as expected from start to finish. Those tests are great because we want to know if all the pieces of the puzzle work together to give us the result we want.


While testing things in integration could be sufficient on its own, we might find ourselves wanting to describe the behavior of our objects in more detail. Unit tests are a great tool for this.


# Why unit testing
Integration tests ensure that all our code works as expected from start to finish. Those tests are great because we want to know if all the pieces of the puzzle work together to give us the result we want.


While testing things in integration could be sufficient on its own, we might find ourselves wanting to describe the behavior of our objects in more detail. Unit tests are a great tool for this.


Learn about the motivation for writing unit tests for the application.

Before We Start

The Why Behind Testing

The How Behind Testing

Planning

The Feature Layer

The Request Layer

The Unit Layer

Conclusion

Testing the Edges

Why unit testing