Unit test CLI output in GO

I am newer to GO and currently working on a small CLI application. I am currently working on adding unit testing and have hit a snag and am wondering what the proper approach would be. I have a function that renders some output as a table to the command line using fmt.Println/fmt.Printf. I am wondering how I can capture that output in a unit test to make sure I am getting what is expected? Below is just a barebones skelton that somewhat represents what I am trying to achieve. Any tips would be a great help!

main.go

package main

import (
    "fmt"
    "io"
)

func print() {
    fmt.Println("Hello world")
}

func main() {
    print()
}

main_test.go

package main

import "testing"

func TestPrint(t *testing.T) {
    expected := "Hello world"
    print() // somehow capture the output
    // if got != expected {
    //  t.Errorf("Does not match")
    // }
}

I have tried a few approaches such as How to check a log/output in go test? but with minimal luck but, that could be due to misunderstanding on my end.