may need a bit more practice and help

train.rb

@@ -12,4 +12,14 @@ def see_danger_coming!
 end
 
 class Engineer
+end
+
+class MessageBoard
+
+  def slow_down!(engineer)
+  end
+
+  def confirm_slow_down!(conductor)
+  end
+
 end

train_spec.rb

@@ -1,5 +1,6 @@
 require 'rspec'
 require './train'
+
 describe Conductor do
 
 	let(:engineer) { Engineer.new }
@@ -10,4 +11,30 @@
 		conductor.see_danger_coming!
 	end
 
-end
+end
+
+describe MessageBoard do
+
+  let(:message_board) { MessageBoard.new }
+
+  it "should receive slow down from conductor" do
+    message_board.should_receive(:slow_down!)
+  end
+
+  it "should receive a slow down confirmation from the engineer" do
+    message_board.should_receive(:confirm_slow_down!)
+  end
+end
+
+# Your Assignment
+# ---------------
+
+# In most circumstances like this, there's a sort of MessageBoard. Let's create
+# the idea of a MessageBoard class that both the engineer and the conductor know
+# about.
+
+# 1. When the conductor sees trouble, the conductor tells the `message_board` to slow down
+# 2. When the engineer slows down, the engineer tells the `message_board` `confirm_slow_down`
+
+# Use whichever mocking tool you liked the best or are interested in. If you
+# don't know what to choose, go with RSpec.