Same file needed for multiple packages in GoLang

Question

I am using this method here to collect the code coverage for my system tests. The overall idea is that I need a dummy test so that I can generate an executable that calls the main() in the package. As a result, I have a file like the following in each and every packages:

TestRunner.go:

//go:build testrunner

package main

import "testing"

import (
    "os"
)

func TestRunMain(t *testing.T) {
    main()
}

func TestMain(m *testing.M) {
    // This is where I parse flags
    m.Run()
}

As shown, it is a really simple file but I would need a duplicate of this for each package to generate the executables since they all have their own main(). From the maintainability point of view, this does not seem to be the best practice as if I were to change the flag parsing in the test runner, I would have to make the same change across all packages.

One way I can think of is to keep a template. Then write a script in the Makefile so that every time I build the project, it copy-pastes the template to each package and after it generates the executables, the copies will get deleted. But this feels rather cumbersome.

Is there any other way I can keep only one copy of the file and somehow have it reference the main()s from different packages?

You can use one file with symbolic links to wherever other copies must be — Burak Serdar, Aug 24 '22 at 18:18
Create one file in a directory, maybe `shared/main.g`, then add a symbolic link to that under each package that needs it — Burak Serdar, Aug 24 '22 at 18:29
@BurakSerdar I kept thinking it should be something with Go... that does seem to be the cleanest. Thank you! — cxc, Aug 24 '22 at 18:43

Same file needed for multiple packages in GoLang

0 Answers0