false deadcode positive for main_test.go files

[cloudlena]

deadcode produces false positives if there is a main_test.go file which is part of the main package. To reproduce, create the following files:

main.go:

package main

import "fmt"

func main() {
	fmt.Println("derp")
}

main_test.go:

package main

import (
	"fmt"
	"testing"
)

func TestMain(t *testing.T) {
	fmt.Println("herp")
}

This produces the following error message when running golangci-lint run:

main_test.go:8:6: `TestMain` is unused (deadcode)
func TestMain(t *testing.T) {
     ^

The false positive doesn't occur, if the package of the testing file is changed to main_test.

[jirfag]

thank you for reporting!

[jirfag]

Fixed it

[cloudlena]

Thanks!