//go:build windows

package testsupport

import (
	"os"
	"testing"

	"golang.org/x/sys/windows"
)

func TestSymlinkPrivilegeUnavailableRecognizesOnlyWindowsPrivilegeErrors(t *testing.T) {
	for name, err := range map[string]error{
		"permission": os.ErrPermission,
		"privilege not held": &os.LinkError{
			Op:  "symlink",
			Old: "target",
			New: "link",
			Err: windows.ERROR_PRIVILEGE_NOT_HELD,
		},
	} {
		t.Run(name, func(t *testing.T) {
			if !isSymlinkPrivilegeUnavailable(err) {
				t.Fatalf("isSymlinkPrivilegeUnavailable(%v) = false, want true", err)
			}
		})
	}

	unrelated := &os.LinkError{
		Op:  "symlink",
		Old: "target",
		New: "link",
		Err: windows.ERROR_FILENAME_EXCED_RANGE,
	}
	if isSymlinkPrivilegeUnavailable(unrelated) {
		t.Fatal("unrelated Windows symlink failure was classified as a missing privilege")
	}
}