Use a different controller in different tests

A number of test were defining and using the same controller
MyController = Class.new(ActionController::Base)
which was causing some state to leak across tests.

Author: bf4

test/action_controller/adapter_selector_test.rb

@@ -3,7 +3,7 @@
 module ActionController
   module Serialization
     class AdapterSelectorTest < ActionController::TestCase
-      class MyController < ActionController::Base
+      class AdapterSelectorTestController < ActionController::Base
         def render_using_default_adapter
           @profile = Profile.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' })
           render json: @profile
@@ -20,7 +20,7 @@ def render_skipping_adapter
         end
       end
 
-      tests MyController
+      tests AdapterSelectorTestController
 
       def test_render_using_default_adapter
         get :render_using_default_adapter

test/action_controller/explicit_serializer_test.rb

@@ -3,7 +3,7 @@
 module ActionController
   module Serialization
     class ExplicitSerializerTest < ActionController::TestCase
-      class MyController < ActionController::Base
+      class ExplicitSerializerTestController < ActionController::Base
         def render_using_explicit_serializer
           @profile = Profile.new(name: 'Name 1',
                                  description: 'Description 1',
@@ -65,7 +65,7 @@ def render_using_explicit_each_serializer
         end
       end
 
-      tests MyController
+      tests ExplicitSerializerTestController
 
       def test_render_using_explicit_serializer
         get :render_using_explicit_serializer

test/action_controller/json_api_linked_test.rb

@@ -3,7 +3,7 @@
 module ActionController
   module Serialization
     class JsonApiLinkedTest < ActionController::TestCase
-      class MyController < ActionController::Base
+      class JsonApiLinkedTestController < ActionController::Base
         def setup_post
           ActionController::Base.cache_store.clear
           @role1 = Role.new(id: 1, name: 'admin')
@@ -78,7 +78,7 @@ def render_collection_with_include
         end
       end
 
-      tests MyController
+      tests JsonApiLinkedTestController
 
       def test_render_resource_without_include
         get :render_resource_without_include

test/action_controller/rescue_from_test.rb

@@ -3,7 +3,7 @@
 module ActionController
   module Serialization
     class RescueFromTest < ActionController::TestCase
-      class MyController < ActionController::Base
+      class RescueFromTestController < ActionController::Base
         rescue_from Exception, with: :handle_error
 
         def render_using_raise_error_serializer
@@ -16,7 +16,7 @@ def handle_error(exception)
         end
       end
 
-      tests MyController
+      tests RescueFromTestController
 
       def test_rescue_from
         get :render_using_raise_error_serializer

test/action_controller/serialization_test.rb

@@ -3,7 +3,7 @@
 module ActionController
   module Serialization
     class ImplicitSerializerTest < ActionController::TestCase
-      class MyController < ActionController::Base
+      class ImplicitSerializationTestController < ActionController::Base
         def render_using_implicit_serializer
           @profile = Profile.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' })
           render json: @profile
@@ -152,7 +152,7 @@ def with_adapter(adapter)
         end
       end
 
-      tests MyController
+      tests ImplicitSerializationTestController
 
       # We just have Null for now, this will change
       def test_render_using_implicit_serializer