Make sure that PUTS and DELETES are handled correctly in merb

lib/boot_merb.rb

@@ -35,8 +35,13 @@ def save_and_open_page
   #which is where we get our status and response from. 
   #
   #We have to preserve cookies like this, or the session is lost.
+  #
+  #While (in a web application) a PUT is modelled as a POST with a parameter _method, 
+  #this close to the metal we need to make sure that we actually hit the underlying 'put' method,
+  #so we rewrite 'method'.
   def request_via_redirect(method,path,parameters={},headers={})
-    mycookies = @controller.cookies rescue nil #will be nil if no requests yet
+    method = parameters["_method"] if !parameters["_method"].blank?
+    mycookies = defined?(@controller) ? @controller.cookies : nil #will be nil if no requests yet
     @controller=self.send(method, path, parameters, headers) do |new_controller|
       new_controller.cookies = mycookies
     end

test/clicks_button_test.rb

@@ -9,6 +9,8 @@ def setup
     @session.stubs(:current_page).returns(@page)
     @response = mock
     @session.stubs(:response).returns(@response)
+    @controller = mock
+    @controller.stubs(:status).returns(200)
   end
 
   def test_should_fail_if_no_buttons
@@ -349,4 +351,29 @@ def test_should_send_default_empty_text_field_values
     @session.expects(:get_via_redirect).with("/login", "user" => {"email" => ""})
     @session.clicks_button
   end
+
+  def test_should_use_put_method_when_needed
+    @response.stubs(:body).returns(<<-EOS)
+      <form method="put" action="/login">
+        <input id="user_email" name="user[email]" value="test@example.com" type="hidden" />
+        <input type="submit" />
+      </form>
+    EOS
+    @session.stubs(:redirect?).returns(false)
+    @session.expects(:put).returns(@controller)
+    @session.clicks_button
+  end
+
+  def test_should_use_delete_method_when_needed
+    @response.stubs(:body).returns(<<-EOS)
+      <form method="delete" action="/login">
+        <input id="user_email" name="user[email]" value="test@example.com" type="hidden" />
+        <input type="submit" />
+      </form>
+    EOS
+    @session.stubs(:redirect?).returns(false)
+    @session.expects(:delete).returns(@controller)
+    @session.clicks_button
+  end
+
 end