fsck: update testcases with binary xattrs

tests/fsck/fsck_test.go

@@ -1,6 +1,7 @@
 package fsck
 
 import (
+	"encoding/base64"
 	"os"
 	"os/exec"
 	"strings"
@@ -12,20 +13,28 @@ import (
 	"github.com/rfjakob/gocryptfs/tests/test_helpers"
 )
 
+func dec64(in string) (out []byte) {
+	out, err := base64.RawURLEncoding.DecodeString(in)
+	if err != nil {
+		panic(err)
+	}
+	return out
+}
+
 func TestBrokenFsV14(t *testing.T) {
 	// git does not save extended attributes, so we apply them here.
 	// xattr_good
 	xattr.Set("broken_fs_v1.4/6nGs4Ugr3EAHd0KzkyLZ-Q",
 		"user.gocryptfs.0a5e7yWl0SGUGeWB0Sy2Kg",
-		[]byte("hxnZvXSkDicfwVS9w4r1yYkFF61Qou6NaL-VhObYEdu6kuM"))
+		dec64("hxnZvXSkDicfwVS9w4r1yYkFF61Qou6NaL-VhObYEdu6kuM"))
 	// xattr_corrupt_name
 	xattr.Set("broken_fs_v1.4/CMyUifVTjW5fsgXonWBT_RDkvLkdGrLttkZ45T3Oi3A",
 		"user.gocryptfs.0a5e7yWl0SGUGeWB0Sy2K0",
-		[]byte("QHUMDTgbnl8Sv_A2dFQic_G2vN4_gmDna3651JAhF7OZ-YI"))
+		dec64("QHUMDTgbnl8Sv_A2dFQic_G2vN4_gmDna3651JAhF7OZ-YI"))
 	// xattr_corrupt_value
 	xattr.Set("broken_fs_v1.4/b00sbnGXGToadr01GHZaYQn8tjyRhe1OXNBZoQtMlcQ",
 		"user.gocryptfs.0a5e7yWl0SGUGeWB0Sy2Kg",
-		[]byte("A0hvCePeKpL8bCpijhDKtf7cIijXYQsPnEbNJ84M2ONW0dd"))
+		dec64("A0hvCePeKpL8bCpijhDKtf7cIijXYQsPnEbNJ84M2ONW0dd"))
 
 	cmd := exec.Command(test_helpers.GocryptfsBinary, "-fsck", "-extpass", "echo test", "broken_fs_v1.4")
 	outBin, err := cmd.CombinedOutput()