[test] Exclude test if TShape is not available

because geom=OFF, e.g. for minimal builds.

Author: dpiparo

roottest/root/treeformula/casting/CMakeLists.txt

@@ -3,13 +3,14 @@ ROOTTEST_ADD_TEST(write
                   FIXTURES_REQUIRED root-io-event-TestIoEvent-fixture
                   FIXTURES_SETUP root-treeformula-casting-write-fixture)
 
-ROOTTEST_COMPILE_MACRO(Simple.cxx
-                       FIXTURES_SETUP root-treeformula-casting-Simple-fixture)
-
 if(geom)
+  ROOTTEST_COMPILE_MACRO(Simple.cxx
+                         FIXTURES_SETUP root-treeformula-casting-Simple-fixture)
+
+
   ROOTTEST_ADD_TEST(run
                     MACRO Run.C
                     OUTREF Simple.ref
                     FIXTURES_REQUIRED root-treeformula-casting-write-fixture
                                       root-treeformula-casting-Simple-fixture)
-endif()
+endif()