Fix the build.

spec/mailers/invite_mailer_spec.rb

@@ -78,7 +78,11 @@ describe InviteMailer do
       let(:topic) { Fabricate(:topic, excerpt: "Topic invite support is now available in Discourse!", user: trust_level_2) }
 
       context "default invite message" do
-        let(:invite) { topic.invite(topic.user, 'name@example.com') }
+        let(:invite) do
+          topic.invite(topic.user, 'name@example.com')
+          Invite.find_by(invited_by_id: topic.user.id)
+        end
+
         let(:invite_mail) { InviteMailer.send_invite(invite) }
 
         it 'renders the invitee email' do
@@ -123,7 +127,16 @@ describe InviteMailer do
       end
 
       context "custom invite message" do
-        let(:invite) { topic.invite(topic.user, 'name@example.com', nil, "Hey, I thought you might enjoy this topic!") }
+        let(:invite) do
+          topic.invite(
+            topic.user,
+            'name@example.com',
+            nil,
+            "Hey, I thought you might enjoy this topic!"
+          )
+
+          Invite.find_by(invited_by_id: topic.user.id)
+        end
         let(:custom_invite_mail) { InviteMailer.send_invite(invite) }
 
         it 'renders custom_message' do

spec/models/invite_spec.rb

@@ -329,9 +329,11 @@ describe Invite do
     context 'invited to topics' do
       let(:tl2_user) { Fabricate(:user, trust_level: 2) }
       let!(:topic) { Fabricate(:private_message_topic, user: tl2_user) }
-      let!(:invite) {
+
+      let!(:invite) do
         topic.invite(topic.user, 'jake@adventuretime.ooo')
-      }
+        Invite.find_by(invited_by_id: topic.user)
+      end
 
       context 'redeem topic invite' do
         it 'adds the user to the topic_users' do