simplified string sorting by using a more suitable function

internal/backend/layout_test.go

@@ -116,8 +116,8 @@ func TestDefaultLayout(t *testing.T) {
 			want = append(want, filepath.Join(tempdir, "data", fmt.Sprintf("%02x", i)))
 		}
 
-		sort.Sort(sort.StringSlice(want))
-		sort.Sort(sort.StringSlice(dirs))
+		sort.Strings(want)
+		sort.Strings(dirs)
 
 		if !reflect.DeepEqual(dirs, want) {
 			t.Fatalf("wrong paths returned, want:\n  %v\ngot:\n  %v", want, dirs)
@@ -189,8 +189,8 @@ func TestRESTLayout(t *testing.T) {
 			filepath.Join(path, "keys"),
 		}
 
-		sort.Sort(sort.StringSlice(want))
-		sort.Sort(sort.StringSlice(dirs))
+		sort.Strings(want)
+		sort.Strings(dirs)
 
 		if !reflect.DeepEqual(dirs, want) {
 			t.Fatalf("wrong paths returned, want:\n  %v\ngot:\n  %v", want, dirs)
@@ -335,8 +335,8 @@ func TestS3LegacyLayout(t *testing.T) {
 			filepath.Join(path, "key"),
 		}
 
-		sort.Sort(sort.StringSlice(want))
-		sort.Sort(sort.StringSlice(dirs))
+		sort.Strings(want)
+		sort.Strings(dirs)
 
 		if !reflect.DeepEqual(dirs, want) {
 			t.Fatalf("wrong paths returned, want:\n  %v\ngot:\n  %v", want, dirs)

internal/fs/fs_reader_test.go

@@ -72,8 +72,8 @@ func verifyDirectoryContents(t testing.TB, fs FS, dir string, want []string) {
 		t.Fatal(err)
 	}
 
-	sort.Sort(sort.StringSlice(want))
-	sort.Sort(sort.StringSlice(entries))
+	sort.Strings(want)
+	sort.Strings(entries)
 
 	if !cmp.Equal(want, entries) {
 		t.Error(cmp.Diff(want, entries))

internal/ui/backup.go

@@ -176,7 +176,7 @@ func (b *Backup) update(total, processed counter, errors uint, currentFiles map[
 	for filename := range currentFiles {
 		lines = append(lines, filename)
 	}
-	sort.Sort(sort.StringSlice(lines))
+	sort.Strings(lines)
 	lines = append([]string{status}, lines...)
 
 	b.term.SetStatus(lines)

internal/ui/jsonstatus/status.go

@@ -159,7 +159,7 @@ func (b *Backup) update(total, processed counter, errors uint, currentFiles map[
 	for filename := range currentFiles {
 		status.CurrentFiles = append(status.CurrentFiles, filename)
 	}
-	sort.Sort(sort.StringSlice(status.CurrentFiles))
+	sort.Strings(status.CurrentFiles)
 
 	json.NewEncoder(b.StdioWrapper.Stdout()).Encode(status)
 }