Add #join and #part.

lib/lita/adapters/irc.rb

@@ -24,6 +24,14 @@ def run
         cinch.start
       end
 
+      def join(room_id)
+        cinch.join(room_id)
+      end
+
+      def part(room_id)
+        cinch.part(room_id)
+      end
+
       def send_messages(target, strings)
         if target.private_message?
           user = Cinch::User.new(target.user.name, cinch)

spec/lita/adapters/irc_spec.rb

@@ -48,6 +48,20 @@
     expect(subject.cinch.loggers).not_to be_empty
   end
 
+  describe "#join" do
+    it "joins a channel" do
+      expect(subject.cinch).to receive(:join).with("#lita.io")
+      subject.join("#lita.io")
+    end
+  end
+
+  describe "#part" do
+    it "parts from a channel" do
+      expect(subject.cinch).to receive(:part).with("#lita.io")
+      subject.part("#lita.io")
+    end
+  end
+
   describe "#run" do
     it "connects to IRC" do
       expect(subject.cinch).to receive(:start)