"crm configure show foo" exits 0 with no output if foo doesn't exist

libraries/cib_objects.rb

@@ -18,7 +18,8 @@ module Chef::Libraries
       end
 
       def cib_object_exists?(name)
-        ! get_cib_object_definition(name).nil?
+        dfn = get_cib_object_definition(name)
+        !! (dfn && ! dfn.empty?)
       end
 
       def cib_object_type(obj_definition)

providers/primitive.rb

@@ -78,11 +78,8 @@ def load_current_resource
   name = @new_resource.name
 
   obj_definition = get_cib_object_definition(name)
-  return unless obj_definition
+  return if ! obj_definition or obj_definition.empty?
-
+  Chef::Log.debug "CIB object definition #{obj_definition}"
-  if obj_definition.empty? # probably overly paranoid
-    raise "CIB object '#{name}' existed but definition was empty?!"
-  end
 
   unless obj_definition =~ /\Aprimitive #{name} (\S+)/
     Chef::Log.warn "Resource '#{name}' was not a primitive"

spec/providers/primitive_spec.rb

@@ -54,8 +54,7 @@ describe "Chef::Provider::PacemakerPrimitive" do
 
       # get_cib_object_definition is invoked by load_current_resource
       # and later used to see whether to create or modify.
-      expect(provider).to receive(:get_cib_object_definition).and_return(nil)
+      expect(provider).to receive(:get_cib_object_definition).and_return("")
-
 
       # Later, the :create action calls cib_object_exists? to check
       # that creation succeeded.