re: RuboCop - get rid of redundant curly braces around a hash parameter

test/serializers/associations_test.rb

@@ -7,10 +7,10 @@ module ActiveModel
         @author = Author.new(name: 'Steve K.')
         @author.bio = nil
         @author.roles = []
-        @blog = Blog.new({ name: 'AMS Blog' })
-        @post = Post.new({ title: 'New Post', body: 'Body' })
-        @tag = Tag.new({ name: '#hashtagged' })
-        @comment = Comment.new({ id: 1, body: 'ZOMG A COMMENT' })
+        @blog = Blog.new(name: 'AMS Blog')
+        @post = Post.new(title: 'New Post', body: 'Body')
+        @tag = Tag.new(name: '#hashtagged')
+        @comment = Comment.new(id: 1, body: 'ZOMG A COMMENT')
         @post.comments = [@comment]
         @post.tags = [@tag]
         @post.blog = @blog
@@ -19,7 +19,7 @@ module ActiveModel
         @post.author = @author
         @author.posts = [@post]
 
-        @post_serializer = PostSerializer.new(@post, { custom_options: true })
+        @post_serializer = PostSerializer.new(@post, custom_options: true)
         @author_serializer = AuthorSerializer.new(@author)
         @comment_serializer = CommentSerializer.new(@comment)
       end

test/serializers/attributes_test.rb

@@ -4,7 +4,7 @@ module ActiveModel
   class Serializer
     class AttributesTest < ActiveSupport::TestCase
       def setup
-        @profile = Profile.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' })
+        @profile = Profile.new(name: 'Name 1', description: 'Description 1', comments: 'Comments 1')
         @profile_serializer = ProfileSerializer.new(@profile)
         @comment = Comment.new(id: 1, body: 'ZOMG!!', date: '2015')
         @serializer_klass = Class.new(CommentSerializer)

test/serializers/root_test.rb

@@ -8,7 +8,7 @@ module ActiveModel
       end
 
       def test_overwrite_root
-        serializer = VirtualValueSerializer.new(@virtual_value, { root: 'smth' })
+        serializer = VirtualValueSerializer.new(@virtual_value, root: 'smth')
         assert_equal('smth', serializer.json_key)
       end