Added default class method and member grouping and sorting

tests/test_cases.cc

@@ -304,6 +304,7 @@ using namespace clanguml::test::matchers;
 #if defined(ENABLE_CXX_STD_20_TEST_CASES)
 #include "t00065/test_case.h"
 #endif
+#include "t00066/test_case.h"
 
 ///
 /// Sequence diagram tests

tests/test_cases.yaml

@@ -192,6 +192,8 @@ test_cases:
     - name: t00065
       title: Class diagram with packages from directory structure
       description:
+    - name: t00066
+      title: Class fields and methods without grouping and sorting
   Sequence diagrams:
     - name: t20001
       title: Basic sequence diagram test case