Add some missing gems and specs for rails config

Gemfile

@@ -8,3 +8,6 @@ gem "sentry-raven"
 gem "statsd-ruby"
 gem "minitest_to_rspec"
 gem "transpec"
+gem "rails", "~> 5.0.0.1"
+gem "grape"
+gem "active_model_serializers", "~> 0.10.0"

lib/sapience/configuration/rails.rb

@@ -14,11 +14,9 @@ def self.configure
         require("sapience/extensions/action_view/streaming_template_renderer") if defined?(ActionView::StreamingTemplateRenderer::Body)
         require("sapience/extensions/active_job/logging") if defined?(ActiveJob)
         require("sapience/extensions/active_model_serializers/logging") if defined?(ActiveModelSerializers)
-
         require("sapience/extensions/rack/logger") if defined?(Rails::Rack::Logger)
         require("sapience/extensions/action_controller/log_subscriber") if defined?(ActionController)
         require("sapience/extensions/active_record/log_subscriber") if defined?(ActiveRecord::LogSubscriber)
-
         require("sapience/extensions/rack/logger_info_as_debug") if defined?(Rails::Rack::Logger)
         require("sapience/extensions/action_view/log_subscriber") if defined?(ActionView::LogSubscriber)
         require("sapience/extensions/action_controller/log_subscriber_processing") if defined?(ActionView::LogSubscriber)

spec/lib/sapience/configuration/rails_spec.rb

@@ -2,5 +2,76 @@
 
 describe Sapience::Configuration::Rails do
   describe ".configure" do
+    specify do
+      expect(Rails).to receive(:logger=).with(a_kind_of(Sapience::Logger))
+      expect(ActiveSupport).to receive(:on_load).with(:active_record)
+      expect(ActiveSupport).to receive(:on_load).with(:action_controller)
+      expect(ActiveSupport).to receive(:on_load).with(:action_mailer)
+      expect(ActiveSupport).to receive(:on_load).with(:action_view)
+      expect(ActiveSupport).to receive(:on_load).with(:action_cable)
+      described_class.configure
+    end
+
+    before do
+      require "rails/all"
+      require "active_model/railtie"
+      require "active_job/railtie"
+      require "active_record/railtie"
+      require "action_controller/railtie"
+      require "action_mailer/railtie"
+      require "action_view/railtie"
+      # require "action_cable/engine"
+    end
+
+    context 'when rails is loaded' do
+      it "requires rails extensions" do
+        expect(Kernel).to receive(:require).with("sapience/extensions/action_cable/tagged_logger_proxy")
+        expect(Kernel).to receive(:require).with("sapience/extensions/action_controller/live")
+        expect(Kernel).to receive(:require).with("sapience/extensions/action_dispatch/debug_exceptions")
+        expect(Kernel).to receive(:require).with("sapience/extensions/action_view/streaming_template_renderer")
+        expect(Kernel).to receive(:require).with("sapience/extensions/active_job/logging")
+        expect(Kernel).to receive(:require).with("sapience/extensions/active_model_serializers/logging")
+        expect(Kernel).to receive(:require).with("sapience/extensions/rack/logger")
+        expect(Kernel).to receive(:require).with("sapience/extensions/action_controller/log_subscriber")
+        expect(Kernel).to receive(:require).with("sapience/extensions/active_record/log_subscriber")
+        expect(Kernel).to receive(:require).with("sapience/extensions/rack/logger_info_as_debug")
+        expect(Kernel).to receive(:require).with("sapience/extensions/action_view/log_subscriber")
+        expect(Kernel).to receive(:require).with("sapience/extensions/action_controller/log_subscriber_processing")
+        described_class.configure
+      end
+    end
+
+    context 'when rails is not loaded' do
+      before do
+        Object.send(:remove_const, ActionCable)
+        Object.send(:remove_const, ActionController::Live)
+        Object.send(:remove_const, ActionDispatch::DebugExceptions)
+        Object.send(:remove_const, ActionView::StreamingTemplateRenderer::Body)
+        Object.send(:remove_const, ActiveJob)
+        Object.send(:remove_const, ActiveModelSerializers)
+        Object.send(:remove_const, Rails::Rack::Logger)
+        Object.send(:remove_const, ActionController)
+        Object.send(:remove_const, ActiveRecord::LogSubscriber)
+        Object.send(:remove_const, Rails::Rack::Logger)
+        Object.send(:remove_const, ActionView::LogSubscriber)
+        Object.send(:remove_const, ActionView::LogSubscriber)
+      end
+
+      it 'does not require rails extensions' do
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/action_cable/tagged_logger_proxy")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/action_controller/live")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/action_dispatch/debug_exceptions")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/action_view/streaming_template_renderer")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/active_job/logging")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/active_model_serializers/logging")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/rack/logger")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/action_controller/log_subscriber")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/active_record/log_subscriber")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/rack/logger_info_as_debug")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/action_view/log_subscriber")
+        expect(Kernel).not_to receive(:require).with("sapience/extensions/action_controller/log_subscriber_processing")
+        described_class.configure
+      end
+    end
   end
 end