GOLANG: UNIT TESTING

Unit Testing made easy in Go

In this article, we will learn about unit testing in Go. Go provide built-in functionality to test your Go code. Hence, we don’t need an expensive setup or 3rd party libraries to create unit tests.

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Like cells are the building units of our body, likewise, unit components make up software. Similarly, as the functioning of our body depends on the absolute efficiency and reliability of these cells, efficiency, and reliability of a piece of software depends on efficiency, and reliability of the unit components that makes it up.

So what are these unit components? They can be functions, structs, methods and pretty much anything that end-user might depend on. Hence, we need to make sure, whatever the inputs to these unit components are, they should never break the application.

So how we can test the integrity of these unit components? By creating unit tests. A unit test is a program that tests a unit component by all possible means and compares the result to the expected output.

So what can we test? If we have a module or a package, we can test whatever exports are available in the package (because they will be consumed by the end-user)…