Use send as opposed to [] to make sure we catch virtual attributes

git-svn-id: https://rspec-on-rails-matchers.googlecode.com/svn/trunk@4 11e6f158-dd3c-0410-a69b-4d739fb74d9d

lib/spec/rails/matchers/validations.rb

@@ -3,7 +3,7 @@ module Rails
     module Matchers
       def validate_presence_of(attribute)
         return simple_matcher("model to validate the presence of #{attribute}") do |model|
-          model[attribute] = nil
+          model.send("#{attribute}=", nil)
           !model.valid? && model.errors.invalid?(attribute)
         end
       end
@@ -13,11 +13,11 @@ def validate_length_of(attribute, options)
         max = options[:between].last
 
         return simple_matcher("model to validate the length of #{attribute} between #{min} and #{max}") do |model|
-          model[attribute] = 'a' * (min - 1)
+          model.send("#{attribute}=", 'a' * (min - 1))
 
           invalid = !model.valid? && model.errors.invalid?(attribute)
 
-          model[attribute] = 'a' * (max + 1)
+          model.send("#{attribute}=", 'a' * (max + 1))
 
           invalid && !model.valid? && model.errors.invalid?(attribute)
         end