TextEditor: Add tests for the generic highlighter

Change-Id: I5a5092ed0a997800bf6653ab25d69f08f4aa0c37
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/texteditor/texteditorplugin.cpp

@@ -22,6 +22,7 @@
 
 #ifdef WITH_TESTS
 #include "codeassist/codeassist_test.h"
+#include "highlighter_test.h"
 #endif
 
 #include <coreplugin/actionmanager/actioncontainer.h>
@@ -149,6 +150,7 @@ void TextEditorPlugin::initialize()
 
 #ifdef WITH_TESTS
     addTest<CodeAssistTests>();
+    addTest<GenerigHighlighterTests>();
 #endif
 }