Hi everyone, in this hands on blog i would like to demonstrate simple unit testing in Golang which will help you get started. Let’s take simple go file (main.go) where there is an interface and a concrete implementation that we will test in this blog lab.

Let’s examine the contents of the file.

• LoanInfo struct which is a simple model with one field interestInPercent . As the name suggests, its a model representing information about a Loan.
• NewLoanInfo LoanInfo constructor function with basic validation.
• Calculator interface which has one abstract method SimpleInterest , takes principal amount (USD)…