Commit 0686757

@@ -1,3 +1,11 @@
 class West
-
+  def turn_right
+    North.new
+  end
+  def turn_left
+    South.new
+  end
+  def forward(current_location)
+    current_location[:x] = current_location[:x]-1
+  end
 end

@@ -17,4 +17,9 @@ describe East do
       sut.turn_right.should be_an_instance_of(South)
     end
   end
+  context "when turning left" do
+    it "should face North" do
+      sut.turn_left.should be_an_instance_of(North)
+    end
+  end
 end

@@ -0,0 +1,25 @@
+require 'spec_helper'
+
+describe West do
+  let(:sut){ West.new }
+
+  context "when moving forward" do
+    it "should move to the next position" do
+      @location[:x].should == 0
+    end
+    before do
+      @location = {:x => 1, :y => 0}
+      sut.forward(@location)
+    end
+  end
+  context "when turning right" do
+    it "should face North" do
+      sut.turn_right.should be_an_instance_of(North)
+    end
+  end
+  context "when turning left" do
+    it "should face South" do
+      sut.turn_left.should be_an_instance_of(South)
+    end
+  end
+end