After commit c018f5fd29 Fenrir is being switched over to go. If you do not want to be part of the testing process, please switch to master.

internal/console/decode_linux_test.go

@@ -0,0 +1,79 @@
+// Fenrir console screen reader.
+// Copyright (c) 2026 Storm Dragon
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program. If not, see <https://www.gnu.org/licenses/gpl-3.0.html>.
+
+//go:build linux && cgo
+
+package console
+
+import (
+	"encoding/binary"
+	"git.stormux.org/storm/fenrir/internal/presentation"
+	"git.stormux.org/storm/fenrir/internal/screen"
+	"testing"
+)
+
+func TestVCSAAttributesUseNativeWordsAndKeepUnicode(t *testing.T) {
+	text := make([]byte, 8)
+	binary.NativeEndian.PutUint32(text, 'é')
+	binary.NativeEndian.PutUint32(text[4:], '界')
+	data := []byte{1, 2, 0, 0, 0, 0, 0, 0}
+	binary.NativeEndian.PutUint16(data[4:], 0x1741)
+	binary.NativeEndian.PutUint16(data[6:], 0x8742)
+	snapshot, err := decode_snapshot(2, data, text)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := decode_attributes(&snapshot, data); err != nil {
+		t.Fatal(err)
+	}
+	if string(snapshot.Cells) != "é界" || snapshot.Attributes[0] != (screen.Attribute{Foreground: screen.ColorIndexed | 7, Background: screen.ColorIndexed | 4}) || snapshot.Attributes[1] != (screen.Attribute{Foreground: screen.ColorIndexed | 7, Background: screen.ColorIndexed, Style: screen.ConsoleHigh}) {
+		t.Fatal("attributes corrupted Unicode or cell order", snapshot)
+	}
+	if got := presentation.Format_attributes(snapshot.Attributes[0], "fenrirFGColor|fenrirBGColor|fenrirBold|fenrirBlink"); got != "light gray|blue||" {
+		t.Fatal(got)
+	}
+	if got := presentation.Format_attributes(snapshot.Attributes[1], "fenrirFGColor|fenrirBGColor|fenrirBold|fenrirBlink"); got != "light gray|black||" {
+		t.Fatal(got)
+	}
+	for _, invalid := range [][]byte{data[:4], data[:7], append(append([]byte{}, data...), 0)} {
+		if err := decode_attributes(&snapshot, invalid); err == nil {
+			t.Fatal("accepted partial or oversized VCSA", invalid)
+		}
+	}
+}
+
+func TestDecodeUnicodeAndGeometry(t *testing.T) {
+	data := make([]byte, 16)
+	for index, value := range []uint32{'é', '界', 0, 0x110000} {
+		binary.NativeEndian.PutUint32(data[index*4:], value)
+	}
+	snapshot, err := decode_snapshot(2, []byte{2, 2, 1, 0}, data)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(snapshot.Cells) != "é界 �" || snapshot.Text(0) != "é界" {
+		t.Fatalf("wrong Unicode: %+v", snapshot)
+	}
+	for _, header := range [][]byte{{}, {0, 2, 0, 0}, {2, 2, 2, 0}, {2, 2, 0, 2}} {
+		if _, err := decode_snapshot(1, header, data); err == nil {
+			t.Fatalf("accepted invalid header %v", header)
+		}
+	}
+	if _, err := decode_snapshot(1, []byte{2, 2, 0, 0}, data[:12]); err == nil {
+		t.Fatal("accepted resize mismatch")
+	}
+}