Traps INT signal (#105)

lib/listen/listener.rb

@@ -30,6 +30,7 @@ def initialize(*args, &block)
     # for changes. The current thread is not blocked after starting.
     #
     def start
+      _signals_trap
       _init_actors
       unpause
       adapter.async.start
@@ -81,6 +82,12 @@ def _init_actors
       Celluloid::Actor[:listen_record]      = Record.new(self)
     end
 
+    def _signals_trap
+      if Signal.list.keys.include?('INT')
+        Signal.trap('INT') { exit }
+      end
+    end
+
     def _build_record_if_needed
       record && record.build
     end

spec/lib/listen/listener_spec.rb

@@ -50,6 +50,11 @@
       adapter.stub_chain(:async, :start)
     }
 
+    it "traps INT signal" do
+      expect(Signal).to receive(:trap).with('INT')
+      listener.start
+    end
+
     it "registers change_pool" do
       Listen::Change.should_receive(:pool).with(args: listener) { change_pool }
       Celluloid::Actor.should_receive(:[]=).with(:listen_change_pool, change_pool)