page_validator.rb in howitzer-2.0.2

- old
+ new

@@ -19,11 +19,10 @@
       # Checks if any validations are defined for the page
       # @raise  [Howitzer::NoValidationError] if no one validation is defined for the page
 
       def check_validations_are_defined!
         return if self.class.validations.present?
-
         raise Howitzer::NoValidationError, "No any page validation was found for '#{self.class.name}' page"
       end
 
       # This module holds page validation class methods
       module ClassMethods
@@ -32,10 +31,11 @@
         # @param value [Symbol, String, Regexp]
         #   For :url and :title validation types must be <b>Regexp</b>
         #   For :element_presence must be one of element names described for page
         # @param additional_value [Object, nil] any value required to pass for a labmda selector
         # @raise  [Howitzer::UnknownValidationError] if unknown validation type
+        # @raise  [Howitzer::UndefinedElementError] if :element_presence validations refers to undefined element name
         # @example
         #   class ArticleListPage < Howitzer::Web::Page
         #     validate :title, /\ADemo web application - Listing Articles\z/
         #   end
         # @example
@@ -79,9 +79,13 @@
         private
 
         def validate_element(element_name, value = nil)
           validations[:element_presence] =
             lambda do |web_page, sync|
+              if element_name.present? && !private_method_defined?("#{element_name}_element")
+                raise(Howitzer::UndefinedElementError, ':element_presence validation refers to ' \
+                     "undefined '#{element_name}' element on '#{name}' page.")
+              end
               if sync
                 web_page.instance.public_send(*["has_#{element_name}_element?", value].compact)
               else
                 !web_page.instance.public_send(*["has_no_#{element_name}_element?", value].compact)
               end