fix: Remove non-inclusive terms (#1557)

We have been using both the terms "whitelist" and "blacklist" to refer
to a list of approved/denied values, but I wanted to point out that our dev
community recommends the term "allowlist" and "blocklist" instead.

lib/shoulda/matchers/action_controller/permit_matcher.rb

@@ -11,7 +11,7 @@ module Shoulda
   module Matchers
     module ActionController
       # The `permit` matcher tests that an action in your controller receives a
-      # whitelist of parameters using Rails' Strong Parameters feature
+      # allowlist of parameters using Rails' Strong Parameters feature
       # (specifically that `permit` was called with the correct arguments).
       #
       # Here's an example:

lib/shoulda/matchers/active_model/validate_exclusion_of_matcher.rb

@@ -3,10 +3,10 @@ module Matchers
     module ActiveModel
       # The `validate_exclusion_of` matcher tests usage of the
       # `validates_exclusion_of` validation, asserting that an attribute cannot
-      # take a blacklist of values, and inversely, can take values outside of
+      # take a blocklist of values, and inversely, can take values outside of
       # this list.
       #
-      # If your blacklist is an array of values, use `in_array`:
+      # If your blocklist an array of values, use `in_array`:
       #
       #     class Game
       #       include ActiveModel::Model
@@ -29,7 +29,7 @@ module ActiveModel
       #         in_array(['Mac', 'Linux'])
       #     end
       #
-      # If your blacklist is a range of values, use `in_range`:
+      # If your blocklist is a range of values, use `in_range`:
       #
       #     class Game
       #       include ActiveModel::Model

lib/shoulda/matchers/active_model/validate_inclusion_of_matcher.rb

@@ -8,9 +8,9 @@ class ExampleClass; end
     module ActiveModel
       # The `validate_inclusion_of` matcher tests usage of the
       # `validates_inclusion_of` validation, asserting that an attribute can
-      # take a whitelist of values and cannot take values outside of this list.
+      # take a allowlist of values and cannot take values outside of this list.
       #
-      # If your whitelist is an array of values, use `in_array`:
+      # If your allowlist is an array of values, use `in_array`:
       #
       #     class Issue
       #       include ActiveModel::Model
@@ -34,7 +34,7 @@ module ActiveModel
       #         in_array(['open', 'resolved', 'unresolved'])
       #     end
       #
-      # If your whitelist is a range of values, use `in_range`:
+      # If your allowlist is a range of values, use `in_range`:
       #
       #     class Issue
       #       include ActiveModel::Model

spec/support/unit/model_creation_strategies/active_record.rb

@@ -50,7 +50,7 @@ def define_class_for_model
           run_block(model, block)
         end
 
-        if whitelist_attributes? && model.respond_to?(:attr_accessible)
+        if allowlist_attributes? && model.respond_to?(:attr_accessible)
           model.attr_accessible(*columns.keys)
         end
 
@@ -85,8 +85,8 @@ def customize_table
         options.fetch(:customize_table) { proc {} }
       end
 
-      def whitelist_attributes?
-        options.fetch(:whitelist_attributes, true)
+      def allowlist_attributes?
+        options.fetch(:allowlist_attributes, true)
       end
     end
   end