Merge branch 'unsubscribe-from-thread-from-email-footer' into 'master'

Unsubscribe from thread through link in email footer

Closes #3437 

![Screenshot_from_2015-12-11_15-35-06](/uploads/cfb3d8737d4757f527995411f103d0ce/Screenshot_from_2015-12-11_15-35-06.png)

![Screenshot_from_2015-12-11_15-35-56](/uploads/9b7121be7ce4b05e5995ca6d38c5bea4/Screenshot_from_2015-12-11_15-35-56.png)

See merge request !2068

1 files changed, 26 insertions, 0 deletions

diff --git a/spec/controllers/sent_notification_controller_spec.rb b/spec/controllers/sent_notification_controller_spec.rb
new file mode 100644
index 00000000000..9ced397bd4a
--- /dev/null
+++ b/spec/controllers/sent_notification_controller_spec.rb
@@ -0,0 +1,26 @@
+require 'rails_helper'
+
+describe SentNotificationsController, type: :controller do
+  let(:user)              { create(:user) }
+  let(:issue)             { create(:issue, author: user) }
+  let(:sent_notification) { create(:sent_notification, noteable: issue) }
+
+  describe 'GET #unsubscribe' do
+    it 'returns a 404 when calling without existing id' do
+      get(:unsubscribe, id: '0' * 32)
+
+      expect(response.status).to be 404
+    end
+
+    context 'calling with id' do
+      it 'shows a flash message to the user' do
+        get(:unsubscribe, id: sent_notification.reply_key)
+
+        expect(response.status).to be 302
+
+        expect(response).to redirect_to new_user_session_path
+        expect(controller).to set_flash[:notice].to(/unsubscribed/).now
+      end
+    end
+  end
+end