I’ve recently started writing services in Golang. Using the VSCode debugger has helped me learn (and save me a lot of time!). Lets quickly run through how to set it up.
Under the Run And Debug tab in VSCode, click create a launch.json file.
In this file is where we’ll add configuration for our Go program. This is an example configuration for a simple program called greetings. The folder structure looks like this:
/greetings
go.mod
go.sum
greetings_test.go
greetings.go
.env.development
And the launch.json:
{
"version": "0.2.0"
"configurations": [
"type": "go"
"request": "launch",
"name": "Greetings program" // this can be whatever you want
"program": "${workspaceFolder}/",
"envFile": "${workspaceFolder}/.env.development" // this is optional
]
}And that’s it! To test it out, set a breakpoint and run your tests(s). Here’s the code for the module and its unit test.
greetings.go
package greetings
import "fmt"
func Hello(name string) string {
message := fmt.Sprintf("Hi, %v. Welcome!", name)
return message
}
#=> returns 'Hi, NAME. Welcome!'greetings_test.go
package greetings
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestGreeting(t *testing.T) {
message := Hello("Kayla")
expected_message := "Hi, Kayla. Welcome!"
assert.Equal(t, expected_message, message)
}