Add additional text to NotImplementedErrors [#6328 state:resolved]

Signed-off-by: Santiago Pastorino <santiago@wyeworks.com>

actionpack/lib/action_view/template/resolver.rb

@@ -36,7 +36,7 @@ module ActionView
     # because Resolver guarantees that the arguments are present and
     # normalized.
     def find_templates(name, prefix, partial, details)
-      raise NotImplementedError
+      raise NotImplementedError, "Subclasses must implement a find_templates(name, prefix, partial, details) method"
     end
 
     # Helpers that builds a path. Useful for building virtual paths.

activemodel/lib/active_model/validator.rb

@@ -120,7 +120,7 @@ module ActiveModel #:nodoc:
     # Override this method in subclasses with validation logic, adding errors
     # to the records +errors+ array where necessary.
     def validate(record)
-      raise NotImplementedError
+      raise NotImplementedError, "Subclasses must implement a validate(record) method."
     end
   end
 
@@ -156,7 +156,7 @@ module ActiveModel #:nodoc:
     # Override this method in subclasses with the validation logic, adding
     # errors to the records +errors+ array where necessary.
     def validate_each(record, attribute, value)
-      raise NotImplementedError
+      raise NotImplementedError, "Subclasses must implement a validate_each(record, attribute, value) method"
     end
 
     # Hook method that gets called by the initializer allowing verification

activerecord/lib/active_record/associations/singular_association.rb

@@ -37,7 +37,7 @@ module ActiveRecord
 
         # Implemented by subclasses
         def replace(record)
-          raise NotImplementedError
+          raise NotImplementedError, "Subclasses must implement a replace(record) method"
         end
 
         def set_new_record(record)