Move the function to get a subtitle string to eventhandler

autotests/eventhandlertest.cpp

@@ -61,6 +61,8 @@ private Q_SLOTS:
     void genericBody_data();
     void genericBody();
     void nullGenericBody();
+    void subtitle();
+    void nullSubtitle();
     void mediaInfo();
     void nullMediaInfo();
     void linkPreviewer();
@@ -348,6 +350,25 @@ void EventHandlerTest::nullGenericBody()
     QCOMPARE(noEventHandler.getGenericBody(), QString());
 }
 
+void EventHandlerTest::subtitle()
+{
+    auto event = room->messageEvents().at(0).get();
+    eventHandler.setEvent(event);
+
+    QCOMPARE(eventHandler.subtitleText(), QStringLiteral("after: This is an example text message"));
+
+    event = room->messageEvents().at(2).get();
+    eventHandler.setEvent(event);
+
+    QCOMPARE(eventHandler.subtitleText(), QStringLiteral("after: This is a highlight @bob:kde.org and this is a link https://kde.org"));
+}
+
+void EventHandlerTest::nullSubtitle()
+{
+    QTest::ignoreMessage(QtWarningMsg, "subtitleText called with m_event set to nullptr.");
+    QCOMPARE(noEventHandler.subtitleText(), QString());
+}
+
 void EventHandlerTest::mediaInfo()
 {
     auto event = room->messageEvents().at(4).get();

autotests/neochatroomtest.cpp

@@ -22,7 +22,6 @@ private:
 
 private Q_SLOTS:
     void initTestCase();
-    void subtitleTextTest();
     void eventTest();
 };
 
@@ -32,12 +31,6 @@ void NeoChatRoomTest::initTestCase()
     room = new TestUtils::TestRoom(connection, QStringLiteral("#myroom:kde.org"), "test-min-sync.json"_ls);
 }
 
-void NeoChatRoomTest::subtitleTextTest()
-{
-    QCOMPARE(room->timelineSize(), 1);
-    QCOMPARE(room->lastEventToString(), QStringLiteral("@example:example.org: This is an example\ntext message"));
-}
-
 void NeoChatRoomTest::eventTest()
 {
     QCOMPARE(room->timelineSize(), 1);