Use go:embed for pingpong script

This makes the test independent from its working directory.

Signed-off-by: Tom Wieczorek <[email protected]>

pkg/supervisor/pingpong_windows.go

@@ -17,21 +17,24 @@ limitations under the License.
 package supervisor
 
 import (
+	_ "embed"
 	"io"
 	"net"
+	"os"
 	"os/exec"
 	"path/filepath"
 	"testing"
 
-	"github.com/k0sproject/k0s/internal/pkg/file"
-
 	"github.com/Microsoft/go-winio"
 	"github.com/Microsoft/go-winio/pkg/guid"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/multierr"
 )
 
+//go:embed pingpong.ps1
+var script []byte
+
 type pingPong struct {
 	shellPath string
 	shellArgs []string
@@ -43,9 +46,8 @@ func makePingPong(t *testing.T) *pingPong {
 	shellPath, err := exec.LookPath("powershell")
 	require.NoError(t, err)
 
-	// We need that copy, otherwise tests get cached.
 	scriptPath := filepath.Join(t.TempDir(), "pingpong.ps1")
-	require.NoError(t, file.Copy("pingpong.ps1", scriptPath))
+	require.NoError(t, os.WriteFile(scriptPath, script, 0700))
 
 	guid, err := guid.NewV4()
 	require.NoError(t, err)