provide a way to ensure a clean state between tests

lib/faketwitter.rb

@@ -16,6 +16,11 @@ def register_search(query, search_options = {})
       )
     end
 
+    def reset
+      FakeWeb.clean_registry
+      TweetFactory.reset
+    end
+
     def new_tweet(attributes)
       TweetFactory.create(attributes)
     end

spec/faketwitter_spec.rb

@@ -152,7 +152,28 @@
       tweets = FakeTwitter.tweets_from('ben')
       tweets.map { |t| t['text'] }.should == ['goodbye', 'hello']
     end
+  end
 
+  describe '::reset' do
+    it "tells FakeWeb to clean it's registry" do
+      FakeWeb.should_receive(:clean_registry)
+      FakeTwitter.reset
+    end
+    it "resets the user id counter for tweets" do
+      FakeTwitter.new_tweet('from_user' => 'foo')['from_user_id'].should == 1
+      FakeTwitter.reset
+      FakeTwitter.new_tweet('from_user' => 'bar')['from_user_id'].should == 1
+    end
+    it "resets the tweet id counter" do
+      FakeTwitter.new_tweet('from_user' => 'foo')['id'].should == 1
+      FakeTwitter.reset
+      FakeTwitter.new_tweet('from_user' => 'foo')['id'].should == 1
+    end
+    it "clears the sent tweets" do
+      FakeTwitter.new_tweet('from_user' => 'foo')
+      FakeTwitter.reset
+      FakeTwitter.tweets_from('foo').should be_empty
+    end
   end
 
 end