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

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

3 files changed, 4 insertions, 4 deletions

diff --git a/actionpack/lib/action_view/template/resolver.rb b/actionpack/lib/action_view/template/resolver.rb
index 4d999fb3b2..589b2a1a76 100644
--- a/actionpack/lib/action_view/template/resolver.rb
+++ b/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.
diff --git a/activemodel/lib/active_model/validator.rb b/activemodel/lib/active_model/validator.rb
index 1c6123eb09..c5ed8d22d3 100644
--- a/activemodel/lib/active_model/validator.rb
+++ b/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
diff --git a/activerecord/lib/active_record/associations/singular_association.rb b/activerecord/lib/active_record/associations/singular_association.rb
index 0d8e45adb5..4edbe216be 100644
--- a/activerecord/lib/active_record/associations/singular_association.rb
+++ b/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)