Add unit tests for service object

spec/models/reset_order_service_spec.rb

@@ -0,0 +1,69 @@
+require 'spec_helper'
+
+describe ResetOrderService do
+  let(:current_distributor) { double(:distributor) }
+  let(:current_token) { double(:current_token) }
+  let(:current_order) { double(:current_order) }
+  let(:tokenized_permission) { double(:tokenized_permission, save!: true) }
+  let(:new_order) do
+    double(
+      :new_order,
+      distributor: current_distributor,
+      token: current_token,
+      set_distributor!: true,
+      tokenized_permission: tokenized_permission,
+    )
+  end
+  let(:session) { double(:session) }
+  let(:controller) { double(:controller, current_order: new_order, session: session) }
+  let(:reset_order_service) { described_class.new(controller) }
+
+  before do
+    allow(current_order).to receive(:tokenized_permission).and_return(tokenized_permission)
+    allow(tokenized_permission).to receive(:token=)
+    allow(session).to receive(:[]=).with(:order_id, nil)
+    allow(session).to receive(:[]=).with(:access_token, current_token)
+  end
+
+  describe '#call' do
+    it 'creates a new order' do
+      reset_order_service.call
+      expect(controller).to have_received(:current_order).once.with(true)
+    end
+
+    it 'empties the order_id of the session' do
+      reset_order_service.call
+      expect(session).to have_received(:[]=).with(:order_id, nil)
+    end
+
+    it 'resets the @current_order var' do
+      reset_order_service.call
+      expect(controller.instance_variable_get(:@current_order)).to be_nil
+    end
+
+    it 'sets the distributor of the order' do
+      reset_order_service.call
+
+      expect(new_order)
+        .to have_received(:set_distributor!)
+        .with(current_distributor)
+    end
+
+    it 'sets the token of the tokenized permissions' do
+      reset_order_service.call
+
+      expect(current_order.tokenized_permission)
+        .to have_received(:token=).with(current_token)
+    end
+
+    it 'persists the tokenized permissions' do
+      reset_order_service.call
+      expect(tokenized_permission).to have_received(:save!)
+    end
+
+    it 'sets the access_token of the session' do
+      reset_order_service.call
+      expect(session).to have_received(:[]=).with(:access_token, current_token)
+    end
+  end
+end