Code-climate duplicate code fixes (#382)

* Code-climate duplicate code fixes

* Spec for accounts controller

spec/controllers/api/v1/accounts_controller_spec.rb

@@ -0,0 +1,28 @@
+require 'rails_helper'
+
+RSpec.describe 'Accounts API', type: :request do
+  describe 'POST /api/v1/accounts' do
+    context 'when posting to accounts with correct parameters' do
+      let(:account_builder) { double }
+      let(:email) { Faker::Internet.email }
+      let(:user) { create(:user, email: email) }
+
+      before do
+        allow(AccountBuilder).to receive(:new).and_return(account_builder)
+        allow(account_builder).to receive(:perform).and_return(user)
+      end
+
+      it 'calls account builder' do
+        params = { account_name: 'test', email: email }
+
+        post api_v1_accounts_url,
+             params: params,
+             as: :json
+
+        expect(AccountBuilder).to have_received(:new).with(params)
+        expect(account_builder).to have_received(:perform)
+        expect(response.headers.keys).to include('access-token', 'token-type', 'client', 'expiry', 'uid')
+      end
+    end
+  end
+end