index and show subjects tests

spec/acceptance/subjects_spec.rb

+require 'acceptance_helpers'
+
+resource 'Subjects' do
+  header 'Accept', 'application/json'
+  header 'Content-Type', 'application/json'
+
+  before { 12.times { create(:subject) } }
+
+  let(:subjects) { Subject.all }
+
+  get '/v1/subjects' do
+    parameter :limit, 'Limit of subjects'
+    parameter :offset, 'Offset of subjects'
+
+    let(:limit) { 12 }
+    let(:offset) { 0 }
+
+    example_request 'Get a list of subjects' do
+      # active model serializer may render model associations in different order for collections (array of items), so we're verifing only returned ids
+      expect(JSON.parse(response_body).map { |o| o['id'] }.sort).to eq(Subject.limit(limit).offset(offset).pluck(:id).sort)
+      expect(status).to eq(200)
+    end
+  end
+
+end

spec/factories/subjects.rb

+FactoryGirl.define do
+  factory :subject do
+    name { Faker::Name.name }
+  end
+end