Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kf6-kcodecs/source/autotests/kencodingprobertest.cpp

@@ -0,0 +1,79 @@
+/*
+    SPDX-FileCopyrightText: 2012 Ni Hui <shuizhuyuanluo@126.com>
+
+    SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
+#include "kencodingprobertest.h"
+
+#include <QDir>
+#include <QTest>
+#include <kencodingprober.h>
+
+static KEncodingProber *ep = nullptr;
+
+void KEncodingProberTest::initTestCase()
+{
+    ep = new KEncodingProber;
+}
+
+void KEncodingProberTest::cleanupTestCase()
+{
+    delete ep;
+    ep = nullptr;
+}
+
+void KEncodingProberTest::cleanup()
+{
+    ep->reset();
+}
+
+void KEncodingProberTest::testReset()
+{
+    ep->feed(QByteArray("some random data @*@#&jd"));
+    ep->reset();
+    QCOMPARE(ep->state(), KEncodingProber::Probing);
+    QCOMPARE(ep->encoding().toLower(), QByteArray("utf-8"));
+}
+
+void KEncodingProberTest::testProbe()
+{
+    // utf-8
+    ep->setProberType(KEncodingProber::Universal);
+    ep->feed(QByteArray::fromHex("e998bfe5b094e58d91e696afe5b1b1e88489"));
+    QCOMPARE(ep->encoding().toLower(), QByteArray("utf-8"));
+    ep->reset();
+
+    // gb18030
+    ep->setProberType(KEncodingProber::ChineseSimplified);
+    ep->feed(QByteArray::fromHex("d7d4d3c9b5c4b0d9bfc6c8abcae9"));
+    QCOMPARE(ep->encoding().toLower(), QByteArray("gb18030"));
+    ep->reset();
+
+    // shift_jis
+    ep->setProberType(KEncodingProber::Japanese);
+    ep->feed(QByteArray::fromHex("8374838a815b955389c88e969354"));
+    QCOMPARE(ep->encoding().toLower(), QByteArray("shift_jis"));
+    ep->reset();
+
+    // big5
+    ep->setProberType(KEncodingProber::ChineseTraditional);
+    ep->feed(QByteArray::fromHex("aefcafc7a6caa474a141a6b3ae65a444a46a"));
+    QCOMPARE(ep->encoding().toLower(), QByteArray("big5"));
+    ep->reset();
+
+    // binary data, just make sure we do not crash (cf. crash in bug #357341)
+    const QString binaryFile = QFINDTESTDATA("data/binary_data");
+    QVERIFY(!binaryFile.isEmpty());
+    QFile file(binaryFile);
+    QVERIFY(file.open(QIODevice::ReadOnly));
+    QByteArray binaryData(file.readAll());
+    ep->setProberType(KEncodingProber::Universal);
+    ep->feed(binaryData);
+    QCOMPARE(ep->encoding().toLower(), QByteArray("utf-8"));
+    ep->reset();
+}
+
+QTEST_MAIN(KEncodingProberTest)
+
+#include "moc_kencodingprobertest.cpp"