Avoid a deprecation warning by poly-filling #deliver_now and #deliver_now

spec/components/email/sender_spec.rb

@@ -5,25 +5,25 @@ describe Email::Sender do
 
   it "doesn't deliver mail when mails are disabled" do
     SiteSetting.expects(:disable_emails).returns(true)
-    Mail::Message.any_instance.expects(:deliver).never
+    Mail::Message.any_instance.expects(:deliver_now).never
     message = Mail::Message.new(to: "hello@world.com" , body: "hello")
     Email::Sender.new(message, :hello).send
   end
 
   it "doesn't deliver mail when the message is nil" do
-    Mail::Message.any_instance.expects(:deliver).never
+    Mail::Message.any_instance.expects(:deliver_now).never
     Email::Sender.new(nil, :hello).send
   end
 
   it "doesn't deliver when the to address is nil" do
     message = Mail::Message.new(body: 'hello')
-    message.expects(:deliver).never
+    message.expects(:deliver_now).never
     Email::Sender.new(message, :hello).send
   end
 
   it "doesn't deliver when the body is nil" do
     message = Mail::Message.new(to: 'eviltrout@test.domain')
-    message.expects(:deliver).never
+    message.expects(:deliver_now).never
     Email::Sender.new(message, :hello).send
   end
 
@@ -53,14 +53,14 @@ describe Email::Sender do
     let(:message) do
       message = Mail::Message.new to: 'eviltrout@test.domain',
                                   body: '**hello**'
-      message.stubs(:deliver)
+      message.stubs(:deliver_now)
       message
     end
 
     let(:email_sender) { Email::Sender.new(message, :valid_type) }
 
     it 'calls deliver' do
-      message.expects(:deliver).once
+      message.expects(:deliver_now).once
       email_sender.send
     end
 
@@ -131,7 +131,7 @@ describe Email::Sender do
   context 'with a user' do
     let(:message) do
       message = Mail::Message.new to: 'eviltrout@test.domain', body: 'test body'
-      message.stubs(:deliver)
+      message.stubs(:deliver_now)
       message
     end