re: RuboCop - replace rocket style hashes

test/serializers/associations_test.rb

@@ -143,12 +143,12 @@ module ActiveModel
         )
         actual = serializable(post, adapter: :attributes, serializer: InlineAssociationTestPostSerializer).as_json
         expected = {
-          :comments => [
-            { :id => 1, :contents => 'first comment' },
-            { :id => 2, :contents => 'last comment' }
+          comments: [
+            { id: 1, contents: 'first comment' },
+            { id: 2, contents: 'last comment' }
           ],
-          :last_comments => [
-            { :id => 2, :contents => 'last comment' }
+          last_comments: [
+            { id: 2, contents: 'last comment' }
           ]
         }
 

test/serializers/attribute_test.rb

@@ -22,7 +22,7 @@ module ActiveModel
         inherited_klass = Class.new(AlternateBlogSerializer)
         blog_serializer = inherited_klass.new(@blog)
         adapter = ActiveModelSerializers::Adapter::Attributes.new(blog_serializer)
-        assert_equal({ :id => 1, :title => 'AMS Hints' }, adapter.serializable_hash)
+        assert_equal({ id: 1, title: 'AMS Hints' }, adapter.serializable_hash)
       end
 
       def test_multiple_calls_with_the_same_attribute

test/serializers/fieldset_test.rb

@@ -5,7 +5,7 @@ module ActiveModel
     class FieldsetTest < ActiveSupport::TestCase
       def test_fieldset_with_hash
         fieldset = ActiveModel::Serializer::Fieldset.new('post' => %w(id title), 'comment' => ['body'])
-        expected = { :post => [:id, :title], :comment => [:body] }
+        expected = { post: [:id, :title], comment: [:body] }
 
         assert_equal(expected, fieldset.fields)
       end