[NF] Update getInstanceName test.

Belonging to [master]:
  - OpenModelica/OMCompiler#2438
  - OpenModelica/OpenModelica-testsuite#947

flattening/modelica/scodeinst/FuncBuiltinGetInstanceName.mo

@@ -6,12 +6,48 @@
 // Tests the builtin getInstanceName operator.
 //
 
+package P
+  constant String s = getInstanceName();
+  constant A a;
+end P;
+
+model A
+  model B
+    String s = getInstanceName();
+  end B;
+
+  B b;
+  String s = getInstanceName();
+end A;
+
+model C
+  extends A;
+end C;
+
 model FuncBuiltinGetInstanceName
+  function f
+    output String s = getInstanceName();
+  end f;
+
   String s = getInstanceName();
+  A a;
+  C c;
+  String ps = P.s;
+  String pas = P.a.s;
+  constant String fs = f();
+  Real rs(displayUnit = getInstanceName());
 end FuncBuiltinGetInstanceName;
 
 // Result:
 // class FuncBuiltinGetInstanceName
-//   String s = getInstanceName();
+//   String s = "FuncBuiltinGetInstanceName";
+//   String a.b.s = "FuncBuiltinGetInstanceName.a.b";
+//   String a.s = "FuncBuiltinGetInstanceName.a";
+//   String c.b.s = "FuncBuiltinGetInstanceName.c.b";
+//   String c.s = "FuncBuiltinGetInstanceName.c";
+//   String ps = "P";
+//   String pas = "P.a";
+//   constant String fs = "FuncBuiltinGetInstanceName.f";
+//   Real rs(displayUnit = "FuncBuiltinGetInstanceName");
 // end FuncBuiltinGetInstanceName;
 // endResult