add basis tests for patterns and remove doubles from recurring_todo_test.rb

app/models/recurring_todos/abstract_recurring_todos_builder.rb

@@ -51,6 +51,10 @@ module RecurringTodos
       @pattern.attributes
     end
 
+    def errors
+      @recurring_todo.try(:errors)
+    end
+
     def attributes_to_filter
       raise Exception.new, "attributes_to_filter should be overridden"
     end

app/models/recurring_todos/monthly_repeat_pattern.rb

@@ -52,7 +52,7 @@ module RecurringTodos
       case recurrence_selector
       when 0 # 'monthly_every_x_day'
         validate_not_blank(every_x_month, "Every other nth month may not be empty for recurrence setting")
-      when 1 # 'every_xth_day'
+      when 1 # 'monthly_every_xth_day'
         validate_not_blank(every_x_month2, "Every other nth month may not be empty for recurrence setting")
         validate_not_blank(day_of_week, "The day of the month may not be empty for recurrence setting")
       else

app/models/recurring_todos/recurring_todos_builder.rb

@@ -51,6 +51,10 @@ module RecurringTodos
       @builder.pattern
     end
 
+    def errors
+      @builder.errors
+    end
+
     private
 
     def valid_selector?(selector)