New example to test free_functions. Makes use of tracking objects functionality.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@7522 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/ruby/free_function/runme.rb

@@ -0,0 +1,45 @@
+require 'example'
+
+begin
+  begin
+    # Create an animal and zoo
+    tiger1 = Example::Animal.new("tiger1")
+	  zoo = Example::Zoo.new
+	
+    # At the animal to the zoo - this will transfer ownership
+    # of the underlying C++ object to the C++ zoo object
+    zoo.add_animal(tiger1)
+
+    # get the id of the tiger
+    id1 = tiger1.object_id
+
+    # Unset the tiger
+    tiger1 = nil
+  end
+
+  # Force a gc
+  GC.start
+
+  # Get the tiger and its id
+  tiger2 = zoo.get_animal(0)
+  id2 = tiger2.object_id
+
+  # The ids should not be the same
+  if id1==id2
+    raise RuntimeError, "Id's should not be the same"
+  end
+
+  zoo = nil
+end
+
+GC.start
+
+# This method is no longer valid since the zoo freed the underlying
+# C++ object
+begin
+	puts tiger2.get_name
+rescue RuntimeError => error
+  if not error.message == "This Animal * already released"
+    raise
+  end
+end