Add test for LtsTimelineClassic PassiveEventContainer.cpp

- Add test_passiveeventcontainer.cpp with 3 tests
- Test container creation, event list setting, paint method
- Follow policy naming convention

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-benchmark/tests/test_passiveeventcontainer.cpp

@@ -0,0 +1,75 @@
+#include "Lts/Common/LtsTimelineClassic/Event.h"
+#include "Lts/Common/LtsTimelineClassic/EventGraphic.h"
+#include "Lts/Common/LtsTimelineClassic/PassiveEventContainer.h"
+
+#include <QPainter>
+#include <QPixmap>
+#include <QStyleOptionViewItem>
+#include <gtest/gtest.h>
+
+namespace LtsTimelineClassic
+{
+
+class PassiveEventContainerTest : public ::testing::Test
+{
+  protected:
+    void SetUp() override {}
+
+    void TearDown() override {}
+};
+
+TEST(PassiveEventContainerTest, CreateContainer)
+{
+    PassiveEventContainer container(false);
+    EXPECT_TRUE(container.getEventGraphicList().isEmpty());
+}
+
+TEST(PassiveEventContainerTest, SetEventList)
+{
+    PassiveEventContainer container(false);
+
+    Event event1(0, 100, Qt::red);
+    Event event2(500, 100, Qt::blue);
+
+    EventGraphic graphic1(&event1);
+    EventGraphic graphic2(&event2);
+
+    EventGraphicList list;
+    list.append(&graphic1);
+    list.append(&graphic2);
+
+    container.setEventList(list);
+
+    EXPECT_EQ(container.getEventGraphicList().size(), 2);
+}
+
+TEST(PassiveEventContainerTest, PaintDoesNotCrash)
+{
+    PassiveEventContainer container(false);
+
+    Event event1(0, 100, Qt::red);
+    EventGraphic graphic1(&event1);
+
+    EventGraphicList list;
+    list.append(&graphic1);
+    container.setEventList(list);
+
+    EventTools::setValues(0, 1000, 0, 500);
+    EventTools::setSection(0, 1000);
+
+    QPixmap pixmap(800, 600);
+    QPainter painter(&pixmap);
+
+    QStyleOptionViewItem option;
+    option.rect = QRect(0, 0, 800, 50);
+    option.features = QStyleOptionViewItem::ViewItemFeature::None;
+
+    LineMap lineMap;
+    lineMap.insert(100, 1000);
+
+    QVector<Range> knownRanges;
+
+    EXPECT_NO_THROW(container.paint(&painter, option, lineMap, knownRanges));
+}
+
+} // namespace LtsTimelineClassic