1 files changed, 20 insertions, 0 deletions
diff --git a/actionmailer/test/abstract_unit.rb b/actionmailer/test/abstract_unit.rb
index 75690b49ad..8a30e39a2b 100644
--- a/actionmailer/test/abstract_unit.rb
+++ b/actionmailer/test/abstract_unit.rb
@@ -8,3 +8,23 @@ ActiveSupport::Deprecation.debug = true
 
 $:.unshift "#{File.dirname(__FILE__)}/fixtures/helpers"
 ActionMailer::Base.template_root = "#{File.dirname(__FILE__)}/fixtures"
+
+class MockSMTP
+  def self.deliveries
+    @@deliveries
+  end
+
+  def initialize
+    @@deliveries = []
+  end
+
+  def sendmail(mail, from, to)
+    @@deliveries << [mail, from, to]
+  end
+end
+
+class Net::SMTP
+  def self.start(*args)
+    yield MockSMTP.new
+  end
+end