add test to class of pagination links

test/adapter/json_api/pagination_links_test.rb

@@ -0,0 +1,85 @@
+require 'test_helper'
+require 'will_paginate/array'
+require 'kaminari'
+require 'kaminari/hooks'
+::Kaminari::Hooks.init
+
+module ActiveModel
+  class Serializer
+    class Adapter
+      class JsonApi
+        class PaginationLinksTest < Minitest::Test
+          def setup
+            ActionController::Base.cache_store.clear
+            @array = [
+              Profile.new({ id: 1, name: 'Name 1', description: 'Description 1', comments: 'Comments 1' }),
+              Profile.new({ id: 2, name: 'Name 2', description: 'Description 2', comments: 'Comments 2' }),
+              Profile.new({ id: 3, name: 'Name 3', description: 'Description 3', comments: 'Comments 3' })
+            ]
+          end
+
+          def using_kaminari
+            Kaminari.paginate_array(@array).page(2).per(1)
+          end
+
+          def using_will_paginate
+            @array.paginate(page: 2, per_page: 1)
+          end
+
+          def expected_response_without_pagination_links
+            {
+              data: [{
+                id:"2",
+                type:"profiles",
+                attributes:{
+                  name:"Name 2",
+                  description:"Description 2"
+                }
+              }]
+            }
+          end
+
+          def expected_response_with_pagination_links
+            {
+              data: [{
+                id:"2",
+                type:"profiles",
+                attributes:{
+                  name:"Name 2",
+                  description:"Description 2"
+                }
+              }],
+              links:{
+                first:"?page=1&per_page=1",
+                prev:"?page=1&per_page=1",
+                next:"?page=3&per_page=1",
+                last:"?page=3&per_page=1"
+              }
+            }
+          end
+
+          def test_pagination_links_using_kaminari
+            serializer = ArraySerializer.new(using_kaminari, pagination: true)
+            adapter = ActiveModel::Serializer::Adapter::JsonApi.new(serializer)
+
+            assert_equal expected_response_with_pagination_links, adapter.serializable_hash
+          end
+
+          def test_pagination_links_using_will_paginate
+            serializer = ArraySerializer.new(using_will_paginate, pagination: true)
+            adapter = ActiveModel::Serializer::Adapter::JsonApi.new(serializer)
+
+            assert_equal expected_response_with_pagination_links, adapter.serializable_hash
+          end
+
+          def test_not_showing_pagination_links
+            serializer = ArraySerializer.new(using_will_paginate, pagination: false)
+            adapter = ActiveModel::Serializer::Adapter::JsonApi.new(serializer)
+
+            assert_equal expected_response_without_pagination_links, adapter.serializable_hash
+          end
+        end
+      end
+    end
+  end
+end