Fix RuboCop 0.40 linter errors (#1722)

These errors are breaking the build, which seems to use RuboCop 0.40 [1]
despite the Gemfile.lock pinning rubocop to 0.38.

New lints that I am updating the code style to reflect:

- Style/EmptyCaseCondition: Do not use empty case condition, instead use
  an if expression.

- Style/MultilineArrayBraceLayout: Closing array brace must be on the
  same line as the last array element when opening brace is on the same
  line as the first array element.

- Style/MultilineHashBraceLayout: Closing hash brace must be on the same
  line as the last hash element when opening brace is on the same line
  as the first hash element.

- Style/MultilineMethodCallBraceLayout: Closing method call brace must
  be on the line after the last argument when opening brace is on a
  separate line from the first argument.

[1] https://github.com/bbatsov/rubocop/releases/tag/v0.40.0

Author: noahsilas

lib/active_model/serializer/include_tree.rb

@@ -95,12 +95,11 @@ def key?(key)
 
       def [](key)
         # TODO(beauby): Adopt a lazy caching strategy for generating subtrees.
-        case
-        when @hash.key?(key)
+        if @hash.key?(key)
           self.class.new(@hash[key])
-        when @hash.key?(:*)
+        elsif @hash.key?(:*)
           self.class.new(@hash[:*])
-        when @hash.key?(:**)
+        elsif @hash.key?(:**)
           self.class.new(:** => {})
         else
           nil

lib/active_model_serializers/deprecate.rb

@@ -36,8 +36,7 @@ def deprecate(name, replacement)
           target = is_a?(Module) ? "#{self}." : "#{self.class}#"
           msg = ["NOTE: #{target}#{name} is deprecated",
                  replacement == :none ? ' with no replacement' : "; use #{replacement} instead",
-                 "\n#{target}#{name} called from #{ActiveModelSerializers.location_of_caller.join(":")}"
-                ]
+                 "\n#{target}#{name} called from #{ActiveModelSerializers.location_of_caller.join(":")}"]
           warn "#{msg.join}."
           send old, *args, &block
         end

test/action_controller/explicit_serializer_test.rb

@@ -100,7 +100,8 @@ def test_render_array_using_explicit_serializer_and_custom_serializers
         get :render_array_using_explicit_serializer_and_custom_serializers
 
         expected = [
-          { 'title' => 'New Post',
+          {
+            'title' => 'New Post',
             'body' => 'Body',
             'id' => assigns(:post).id,
             'comments' => [{ 'id' => 1 }, { 'id' => 2 }],

test/action_controller/json_api/errors_test.rb

@@ -7,8 +7,8 @@ class ErrorsTest < ActionController::TestCase
         def test_active_model_with_multiple_errors
           get :render_resource_with_errors
 
-          expected_errors_object =
-            { :errors =>
+          expected_errors_object = {
+            :errors =>
               [
                 { :source => { :pointer => '/data/attributes/name' }, :detail => 'cannot be nil' },
                 { :source => { :pointer => '/data/attributes/name' }, :detail => 'must be longer' },

test/action_controller/serialization_test.rb

@@ -294,7 +294,8 @@ def test_render_with_cache_enable
           comments: [
             {
               id: 1,
-              body: 'ZOMG A COMMENT' }
+              body: 'ZOMG A COMMENT'
+            }
           ],
           blog: {
             id: 999,
@@ -333,7 +334,8 @@ def test_render_with_cache_enable_and_expired
           comments: [
             {
               id: 1,
-              body: 'ZOMG A COMMENT' }
+              body: 'ZOMG A COMMENT'
+            }
           ],
           blog: {
             id: 999,
@@ -407,7 +409,8 @@ def test_cache_expiration_on_update
           comments: [
             {
               id: 1,
-              body: 'ZOMG A COMMENT' }
+              body: 'ZOMG A COMMENT'
+            }
           ],
           blog: {
             id: 999,

test/adapter/json_api/collection_test.rb

@@ -58,9 +58,10 @@ def test_include_multiple_posts
 
         def test_limiting_fields
           actual = ActiveModelSerializers::SerializableResource.new(
-            [@first_post, @second_post], adapter: :json_api,
-                                         fields: { posts: %w(title comments blog author) })
-                                                               .serializable_hash
+            [@first_post, @second_post],
+            adapter: :json_api,
+            fields: { posts: %w(title comments blog author) }
+          ).serializable_hash
           expected = [
             {
               id: '1',

test/adapter/json_api/errors_test.rb

@@ -22,14 +22,13 @@ def test_active_model_with_error
           assert_equal serializable_resource.serializer_instance.attributes, {}
           assert_equal serializable_resource.serializer_instance.object, @resource
 
-          expected_errors_object =
-            { :errors =>
-              [
-                {
-                  source: { pointer: '/data/attributes/name' },
-                  detail: 'cannot be nil'
-                }
-              ]
+          expected_errors_object = {
+            :errors => [
+              {
+                source: { pointer: '/data/attributes/name' },
+                detail: 'cannot be nil'
+              }
+            ]
           }
           assert_equal serializable_resource.as_json, expected_errors_object
         end
@@ -48,13 +47,12 @@ def test_active_model_with_multiple_errors
           assert_equal serializable_resource.serializer_instance.attributes, {}
           assert_equal serializable_resource.serializer_instance.object, @resource
 
-          expected_errors_object =
-            { :errors =>
-              [
-                { :source => { :pointer => '/data/attributes/name' }, :detail => 'cannot be nil' },
-                { :source => { :pointer => '/data/attributes/name' }, :detail => 'must be longer' },
-                { :source => { :pointer => '/data/attributes/id' }, :detail => 'must be a uuid' }
-              ]
+          expected_errors_object = {
+            :errors => [
+              { :source => { :pointer => '/data/attributes/name' }, :detail => 'cannot be nil' },
+              { :source => { :pointer => '/data/attributes/name' }, :detail => 'must be longer' },
+              { :source => { :pointer => '/data/attributes/id' }, :detail => 'must be a uuid' }
+            ]
           }
           assert_equal serializable_resource.as_json, expected_errors_object
         end

test/adapter/json_api/linked_test.rb

@@ -341,9 +341,10 @@ def test_no_duplicates
 
         def test_no_duplicates_collection
           hash = ActiveModelSerializers::SerializableResource.new(
-            [@post1, @post2], adapter: :json_api,
-                              include: '*.*')
-                                                             .serializable_hash
+            [@post1, @post2],
+            adapter: :json_api,
+            include: '*.*'
+          ).serializable_hash
           expected = [
             {
               type: 'authors', id: '1',
@@ -364,7 +365,8 @@ def test_no_duplicates_global
           hash = ActiveModelSerializers::SerializableResource.new(
             @nestedpost1,
             adapter: :json_api,
-            include: '*').serializable_hash
+            include: '*'
+          ).serializable_hash
           expected = [
             type: 'nested-posts', id: '2',
             relationships: {
@@ -383,7 +385,8 @@ def test_no_duplicates_collection_global
           hash = ActiveModelSerializers::SerializableResource.new(
             [@nestedpost1, @nestedpost2],
             adapter: :json_api,
-            include: '*').serializable_hash
+            include: '*'
+          ).serializable_hash
           assert_nil(hash[:included])
         end
       end

test/adapter/json_api/links_test.rb

@@ -40,7 +40,8 @@ def test_toplevel_links
                   stuff: 'value'
                 }
               }
-            }).serializable_hash
+            }
+          ).serializable_hash
           expected = {
             self: {
               href: 'http://example.com/posts',

test/adapter/json_api/pagination_links_test.rb

@@ -43,7 +43,8 @@ def using_will_paginate(page = 2)
         end
 
         def data
-          { data: [
+          {
+            data: [
               { id: '1', type: 'profiles', attributes: { name: 'Name 1', description: 'Description 1' } },
               { id: '2', type: 'profiles', attributes: { name: 'Name 2', description: 'Description 2' } },
               { id: '3', type: 'profiles', attributes: { name: 'Name 3', description: 'Description 3' } },