session creation

spec/controllers/users_controller_spec.rb

@@ -8,5 +8,19 @@ RSpec.describe UsersController do
     end
   end
   describe 'get create' do
+    before(:all) do # TODO change it to cleanup after each test
+      User.destroy_all
+    end
+    subject {
+      get :create, params: {user: {username: 'karol.selak@gmail.com', password: 'abcde'}}
+    }
+    it 'creates a user' do
+      subject
+      expect(User.where(username: 'karol.selak@gmail.com').size).to eql(1)
+    end
+    it 'redirects to /welcome' do
+      subject
+      expect(subject).to redirect_to('/welcome')
+    end
   end
 end