Run the help command when no argument is given

lib/campfire/cli.rb

@@ -6,12 +6,14 @@ class Cli
 
     def initialize(argv)
       @argv    = argv
-      @options = { :command => :rooms }
+      @options = {}
       parse_options
-      validate_options
+      validate_options if options?
     end
 
     def run
+      return options_parser.inspect unless options?
+
       obj = manager.send(*Array(@options[:command]))
       obj = obj.send(*@options[:subcommand]) if @options[:subcommand]
       obj
@@ -34,6 +36,8 @@ def options_parser
           @options[:token] = value
         end
 
+        opt.separator ""
+
         opt.on "--rooms", "List all rooms" do
           @options[:command] = :rooms
         end
@@ -56,6 +60,10 @@ def options_parser
       end
     end
 
+    def options?
+      !@options.empty?
+    end
+
     def validate_options
       [:subdomain, :token].each do |required_option|
         next if options[required_option]

test/campfire/cli_test.rb

@@ -21,23 +21,12 @@ def test_invalid_option_raises_error
     end
   end
 
-  def test_blank_option_raises_error
-    assert_raises OptionParser::MissingArgument do
-      Campfire::Cli.new([])
-    end
-  end
-
   def test_missing_required_option
     assert_raises OptionParser::MissingArgument do
       Campfire::Cli.new(%w(-s foo))
     end
   end
 
-  def test_default_command_options
-    cli = Campfire::Cli.new(%w[-s foo -t 123])
-    assert_equal :rooms, cli.options[:command]
-  end
-
   def test_rooms_command_options
     cli = Campfire::Cli.new(%w[-s foo -t 123 --rooms])
     assert_equal :rooms, cli.options[:command]
@@ -82,4 +71,14 @@ def test_run_executes_the_given_command_with_subcommand
     message = cli.run
     assert_equal "hello world!", message.body
   end
+
+  def test_help
+    cli = Campfire::Cli.new([])
+
+    help_message = cli.run
+    assert_match /Campfire Command Line Tool/, help_message
+    assert_match /--rooms/, help_message
+    assert_match /--search.*Search the given term/, help_message
+    assert_match /--speak/, help_message
+  end
 end