Use pflags and regular `go test` flags in your tests

your_test.go

package yourpackage

import (
	goflag "flag"
	"fmt"
	"os"
	"strings"
	"testing"

	flag "github.com/spf13/pflag"
)

func TestMain(m *testing.M) {
	// We need to split up the test flags and the regular app pflags.
	// Then hand them off the the std flags and pflags parsers respectively.
	var testFlags []string
	for i := 0; i < len(os.Args); i++ {
		if strings.HasPrefix(os.Args[i], "-test.") {
			// Add the test flag to our testing flags slice so we can parse it seperatly
			testFlags = append(testFlags, os.Args[i])
			// Remove the test flag from our pflags slice
			os.Args = append(os.Args[:i], os.Args[i+1:]...)
			// go back one as we just deleted an element
			i-- 
		}
	}

	// Parse the testing flags
	if err := goflag.CommandLine.Parse(testFlags); err != nil {
		fmt.Println("Error parsing regular test flags:",err)
	}
	
	// Parse our pflags
	flag.Parse()

	os.Exit(m.Run())
}


// your tests ...