fix: 按行缓冲核心输出

tests/coreoutputbuffer_test.cpp

@@ -0,0 +1,76 @@
+#include <QCoreApplication>
+#include <QDebug>
+
+#include "core/coreoutputbuffer.h"
+
+namespace
+{
+bool buffersFragmentedLines()
+{
+    CoreOutputBuffer buffer;
+    const bool firstChunkBuffered = buffer.append("first half").isEmpty();
+    const QList<QByteArray> lines = buffer.append(" second half\nnext");
+    const bool completeLineReturned = lines == QList<QByteArray>{"first half second half"};
+    const bool remainderPreserved = buffer.pendingData() == "next";
+
+    if (!firstChunkBuffered || !completeLineReturned || !remainderPreserved)
+    {
+        qCritical() << "buffersFragmentedLines failed";
+        return false;
+    }
+    return true;
+}
+
+bool extractsMultipleLinesAndNormalizesCrLf()
+{
+    CoreOutputBuffer buffer;
+    const QList<QByteArray> lines = buffer.append("first\r\nsecond\n\n");
+    const QList<QByteArray> expected{"first", "second", ""};
+    if (lines != expected || buffer.hasPendingData())
+    {
+        qCritical() << "extractsMultipleLinesAndNormalizesCrLf failed";
+        return false;
+    }
+    return true;
+}
+
+bool preservesSplitUtf8Characters()
+{
+    CoreOutputBuffer buffer;
+    const QByteArray output = QStringLiteral("日志内容").toUtf8() + '\n';
+    const qsizetype splitPosition = 2;
+
+    const bool firstChunkBuffered = buffer.append(output.first(splitPosition)).isEmpty();
+    const QList<QByteArray> lines = buffer.append(output.sliced(splitPosition));
+    if (!firstChunkBuffered || lines != QList<QByteArray>{QStringLiteral("日志内容").toUtf8()})
+    {
+        qCritical() << "preservesSplitUtf8Characters failed";
+        return false;
+    }
+    return true;
+}
+
+bool takesPendingData()
+{
+    CoreOutputBuffer buffer;
+    buffer.append("prompt without newline");
+    const QByteArray pending = buffer.takePendingData();
+    if (pending != "prompt without newline" || buffer.hasPendingData())
+    {
+        qCritical() << "takesPendingData failed";
+        return false;
+    }
+    return true;
+}
+}
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication app(argc, argv);
+    return buffersFragmentedLines()
+               && extractsMultipleLinesAndNormalizesCrLf()
+               && preservesSplitUtf8Characters()
+               && takesPendingData()
+           ? 0
+           : 1;
+}