Hands-On Design Patterns with React Native

Testing components on high-level patterns

Testing is something very important when it comes to creating reliable and stable applications. First of all, let's look at the most common three types of tests you will need to write:

• Trivial unit tests: I don't understand it, but is it working or not working at all? Usually, tests that check whether the component renders or whether the function runs with no errors are called trivial unit tests. If you do this manually, you call these tests smoke tests. Such tests are vital to have. Whether you like it or not, you should write trivial tests, at least to know if every feature is somehow working.
• Unit tests: Does the code work as I expect it to? Does it work in all of the code branches? By branch, ...