1 files changed, 69 insertions, 0 deletions
diff --git a/spec/lib/gitlab/email/failure_handler_spec.rb b/spec/lib/gitlab/email/failure_handler_spec.rb
new file mode 100644
index 00000000000..a912996e8f2
--- /dev/null
+++ b/spec/lib/gitlab/email/failure_handler_spec.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Email::FailureHandler do
+  let(:raw_message) { fixture_file('emails/valid_reply.eml') }
+  let(:receiver) { Gitlab::Email::Receiver.new(raw_message) }
+
+  context 'email processing errors' do
+    where(:error, :message, :can_retry) do
+      [
+        [Gitlab::Email::UnknownIncomingEmail, "We couldn't figure out what the email is for", false],
+        [Gitlab::Email::SentNotificationNotFoundError, "We couldn't figure out what the email is in reply to", false],
+        [Gitlab::Email::ProjectNotFound, "We couldn't find the project", false],
+        [Gitlab::Email::EmptyEmailError, "It appears that the email is blank", true],
+        [Gitlab::Email::UserNotFoundError, "We couldn't figure out what user corresponds to the email", false],
+        [Gitlab::Email::UserBlockedError, "Your account has been blocked", false],
+        [Gitlab::Email::UserNotAuthorizedError, "You are not allowed to perform this action", false],
+        [Gitlab::Email::NoteableNotFoundError, "The thread you are replying to no longer exists", false],
+        [Gitlab::Email::InvalidAttachment, "Could not deal with that", false],
+        [Gitlab::Email::InvalidRecordError, "The note could not be created for the following reasons", true],
+        [Gitlab::Email::EmailTooLarge, "it is too large", false]
+      ]
+    end
+
+    with_them do
+      it "sends out a rejection email for #{params[:error]}" do
+        perform_enqueued_jobs do
+          described_class.handle(receiver, error.new(message))
+        end
+
+        email = ActionMailer::Base.deliveries.last
+        expect(email).not_to be_nil
+        expect(email.to).to match_array(["jake@adventuretime.ooo"])
+        expect(email.subject).to include("Rejected")
+        expect(email.body.parts.last.to_s).to include(message)
+      end
+
+      it 'strips out the body before passing to EmailRejectionMailer' do
+        mail = Mail.new(raw_message)
+        mail.body = nil
+
+        expect(EmailRejectionMailer).to receive(:rejection).with(match(message), mail.encoded, can_retry).and_call_original
+
+        described_class.handle(receiver, error.new(message))
+      end
+    end
+  end
+
+  context 'non-processing errors' do
+    where(:error) do
+      [
+        [Gitlab::Email::AutoGeneratedEmailError.new("")],
+        [ActiveRecord::StatementTimeout.new("StatementTimeout")],
+        [RateLimitedService::RateLimitedError.new(key: :issues_create, rate_limiter: nil)]
+      ]
+    end
+
+    with_them do
+      it "does not send a rejection email for #{params[:error]}" do
+        perform_enqueued_jobs do
+          described_class.handle(receiver, error)
+        end
+
+        expect(ActionMailer::Base.deliveries).to be_empty
+      end
+    end
+  end
+end