diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 4408052..a7b33a4 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2018-08-27 14:16:34 +0200 using RuboCop version 0.58.2.
+# on 2019-03-25 10:27:43 -0400 using RuboCop version 0.58.2.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 49ca88f..d4b373f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,9 @@
 ### 0.12.1 (Next)
 
-* Your contribution here.
+* [#209](https://github.com/slack-ruby/slack-ruby-bot/pull/209): Allow `respond_to_slack_message` and `respond_to_slack_messages` without arguments - [@dblock](https://github.com/dblock).
+* [#216](https://github.com/slack-ruby/slack-ruby-bot/pull/216): Added `start_typing` RSpec matcher - [@dblock](https://github.com/dblock).
 * [#214](https://github.com/slack-ruby/slack-ruby-bot/pull/214): Add passenger deployment documentation - [@cybercrediators](https://github.com/cybercrediators).
+* Your contribution here.
 
 ### 0.12.0 (2019/2/25)
 
diff --git a/README.md b/README.md
index 4ccaee5..313d2dd 100644
--- a/README.md
+++ b/README.md
@@ -382,7 +382,7 @@ Get help.
 
 Hooks are event handlers and respond to Slack RTM API [events](https://api.slack.com/events), such as [hello](lib/slack-ruby-bot/hooks/hello.rb) or [message](lib/slack-ruby-bot/hooks/message.rb). You can implement your own in a couple of ways:
 
-#### Implement and register a Hook Handler
+#### Implementing and registering a Hook Handler
 
 A Hook Handler is any object that respond to a `call` message, like a proc, instance of an object, class with a `call` class method, etc.
 
@@ -653,14 +653,17 @@ Again, the View will have access to the most up to date `client`, `data`, and `m
 
 View methods are not matched to routes, so there is no restriction on how to name methods as there is in Controllers.
 
-### RSpec Shared Behaviors
+### Testing
 
-Slack-ruby-bot ships with a number of shared RSpec behaviors that can be used in your RSpec tests.
+#### RSpec Shared Behaviors
+
+Slack-ruby-bot comes with a number of shared RSpec behaviors that can be used in your RSpec tests.
 
 * [behaves like a slack bot](lib/slack-ruby-bot/rspec/support/slack-ruby-bot/it_behaves_like_a_slack_bot.rb): A bot quacks like a Slack Ruby bot.
 * [respond with slack message](lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_message.rb): The bot responds with a message.
 * [respond with slack messages](lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_messages.rb): The bot responds with a multiple messages.
 * [respond with error](lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_error.rb): An exception is raised inside a bot command.
+* [start typing](lib/slack-ruby-bot/rspec/support/slack-ruby-bot/start_typing.rb): The bot calls `client.start_typing`.
 
 Require `slack-ruby-bot/rspec` in your `spec_helper.rb` along with the following dependencies in Gemfile.
 
@@ -673,6 +676,72 @@ group :development, :test do
 end
 ```
 
+Use the `respond_with_slack_message` matcher.
+
+```ruby
+describe SlackRubyBot::Commands do
+  it 'responds with any message' do
+    expect(message: "#{SlackRubyBot.config.user} hi").to respond_with_slack_message
+  end
+  it 'says hi' do
+    expect(message: "#{SlackRubyBot.config.user} hi").to respond_with_slack_message('hi')
+  end
+end
+```
+
+Use the `respond_with_slack_messages` matcher for multiple messages.
+
+```ruby
+describe SlackRubyBot::Commands do
+  it 'responds with more than one message' do
+    expect(message: "#{SlackRubyBot.config.user} count").to respond_with_slack_messages
+  end
+  it 'says one and two' do
+    expect(message: "#{SlackRubyBot.config.user} count").to respond_with_slack_messages(['one', 'two'])
+  end
+end
+```
+
+Message matchers support regular expressions.
+
+```ruby
+describe SlackRubyBot::Commands do
+  it 'says hi' do
+    expect(message: "#{SlackRubyBot.config.user} hi").to respond_with_slack_message(/hi/)
+  end
+end
+```
+
+Check that the bot called `client.start_typing(channel: 'channel')`.
+
+```ruby
+describe SlackRubyBot::Commands do
+ it 'starts typing on channel' do
+    expect(message: "#{SlackRubyBot.config.user} hi").to start_typing(channel: 'channel')
+  end
+end
+```
+
+#### Testing Lower Level Messages
+
+You can test client behavior at a lower level by fetching the message hook. The following example expects a bot command to call `client.typing(channel: data.channel)`.
+
+```ruby
+describe SlackRubyBot::Commands do
+  let(:app) { Server.new }
+  let(:client) { app.send(:client) }
+  let(:message_hook) { SlackRubyBot::Hooks::Message.new }
+  it 'receives a typing event' do
+      expect(client).to receive(:typing)
+      message_hook.call(
+        client,
+        Hashie::Mash.new(text: "#{SlackRubyBot.config.user} type something", channel: 'channel')
+      )
+    end
+  end
+end
+```
+
 ### Useful Libraries
 
 * [newrelic-slack-ruby-bot](https://github.com/dblock/newrelic-slack-ruby-bot): NewRelic instrumentation for slack-ruby-bot.
diff --git a/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/not_respond.rb b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/not_respond.rb
index f5cf7a0..c0a04eb 100644
--- a/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/not_respond.rb
+++ b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/not_respond.rb
@@ -2,11 +2,7 @@
 
 RSpec::Matchers.define :not_respond do
   match do |actual|
-    client = if respond_to?(:client)
-               send(:client)
-             else
-               SlackRubyBot::Client.new
-             end
+    client = respond_to?(:client) ? send(:client) : SlackRubyBot::Client.new
 
     message_command = SlackRubyBot::Hooks::Message.new
     channel, user, message, attachments = parse(actual)
diff --git a/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_error.rb b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_error.rb
index e1eb235..962376b 100644
--- a/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_error.rb
+++ b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_error.rb
@@ -2,11 +2,7 @@
 
 RSpec::Matchers.define :respond_with_error do |error, error_message|
   match do |actual|
-    client = if respond_to?(:client)
-               send(:client)
-             else
-               SlackRubyBot::Client.new
-             end
+    client = respond_to?(:client) ? send(:client) : SlackRubyBot::Client.new
 
     message_command = SlackRubyBot::Hooks::Message.new
     channel, user, message, attachments = parse(actual)
diff --git a/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_message.rb b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_message.rb
index 4fb0769..2d9d4f8 100644
--- a/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_message.rb
+++ b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_message.rb
@@ -1,33 +1,34 @@
 require 'rspec/expectations'
+
 RSpec::Matchers.define :respond_with_slack_message do |expected|
   include SlackRubyBot::SpecHelpers
+
   match do |actual|
     client = respond_to?(:client) ? send(:client) : SlackRubyBot::Client.new
-    def client.test_messages
-      @test_received_messages
-    end
-
-    def client.say(options = {})
-      super
-      @test_received_messages = @test_received_messages.nil? ? [] : @test_received_messages
-      @test_received_messages.push options
-    end
 
     message_command = SlackRubyBot::Hooks::Message.new
     channel, user, message, attachments = parse(actual)
 
     allow(Giphy).to receive(:random) if defined?(Giphy)
 
-    allow(client).to receive(:message)
+    allow(client).to receive(:message) do |options|
+      @messages ||= []
+      @messages.push options
+    end
+
     message_command.call(client, Hashie::Mash.new(text: message, channel: channel, user: user, attachments: attachments))
-    @messages = client.test_messages
-    expect(client).to have_received(:message).with(hash_including(channel: channel, text: expected)).once
+
+    matcher = have_received(:message).once
+    matcher = matcher.with(hash_including(channel: channel, text: expected)) if channel && expected
+
+    expect(client).to matcher
+
     true
   end
 
   failure_message do |_actual|
     message = "expected to receive message with text: #{expected} once,\n received:"
-    message += @messages.count.zero? ? 'No response messages received' : @messages.inspect
+    message += @messages && @messages.any? ? @messages.inspect : 'none'
     message
   end
 end
diff --git a/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_messages.rb b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_messages.rb
index 010f64a..1298a38 100644
--- a/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_messages.rb
+++ b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/respond_with_slack_messages.rb
@@ -1,38 +1,45 @@
 require 'rspec/expectations'
+
 RSpec::Matchers.define :respond_with_slack_messages do |expected|
   include SlackRubyBot::SpecHelpers
+
   match do |actual|
-    raise ArgumentError, 'respond_with_slack_messages expects an array of ordered responses' unless expected.respond_to? :each
-    client = respond_to?(:client) ? send(:client) : SlackRubyBot::Client.new
-    def client.test_messages
-      @test_received_messages
-    end
+    raise ArgumentError, 'respond_with_slack_messages expects an array of ordered responses' if expected && !expected.respond_to?(:each)
 
-    def client.say(options = {})
-      super
-      @test_received_messages = @test_received_messages.nil? ? [] : @test_received_messages
-      @test_received_messages.push options
-    end
+    client = respond_to?(:client) ? send(:client) : SlackRubyBot::Client.new
 
     message_command = SlackRubyBot::Hooks::Message.new
     channel, user, message, attachments = parse(actual)
 
     allow(Giphy).to receive(:random) if defined?(Giphy)
 
-    allow(client).to receive(:message)
+    @messages ||= []
+    allow(client).to receive(:message) do |options|
+      @messages.push options
+    end
+
     message_command.call(client, Hashie::Mash.new(text: message, channel: channel, user: user, attachments: attachments))
-    @messages = client.test_messages
+
     @responses = []
-    expected.each do |exp|
-      @responses.push(expect(client).to(have_received(:message).with(hash_including(channel: channel, text: exp)).once))
+
+    if expected && expected.any?
+      expected.each do |exp|
+        @responses.push(expect(client).to(have_received(:message).with(hash_including(channel: channel, text: exp)).once))
+      end
+    else
+      expect(@messages.size).to be > 1
     end
+
     true
   end
+
   failure_message do |_actual|
-    message = ''
-    expected.each do |exp|
-      message += "Expected text: #{exp}, got #{@messages[expected.index(exp)] || 'No Response'}\n" unless @responses[expected.index(exp)]
+    if expected && expected.any?
+      expected.map do |exp|
+        "Expected text: #{exp}, got #{@messages[expected.index(exp)] || 'none'}" unless @responses[expected.index(exp)]
+      end.compact.join("\n")
+    else
+      "Expected to receive multiple messages, got #{@messages.any? ? @messages.size : 'none'}"
     end
-    message
   end
 end
diff --git a/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/start_typing.rb b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/start_typing.rb
new file mode 100644
index 0000000..1296842
--- /dev/null
+++ b/lib/slack-ruby-bot/rspec/support/slack-ruby-bot/start_typing.rb
@@ -0,0 +1,30 @@
+require 'rspec/expectations'
+
+RSpec::Matchers.define :start_typing do |expected|
+  include SlackRubyBot::SpecHelpers
+
+  match do |actual|
+    client = respond_to?(:client) ? send(:client) : SlackRubyBot::Client.new
+
+    message_command = SlackRubyBot::Hooks::Message.new
+
+    allow(client).to receive(:typing) do |options|
+      @test_options = options
+    end
+
+    channel, user, message, attachments = parse(actual)
+    message_command.call(client, Hashie::Mash.new(text: message, channel: channel, user: user, attachments: attachments))
+
+    matcher = have_received(:typing).once
+    matcher = matcher.with(expected) if expected && expected.any?
+    expect(client).to matcher
+
+    true
+  end
+
+  failure_message do |_actual|
+    message = "expected to receive typing with: #{expected} once,\n received:"
+    message += @test_options && @test_options.any? ? @test_options.inspect : ' none'
+    message
+  end
+end
diff --git a/spec/slack-ruby-bot/rspec/respond_with_slack_message_spec.rb b/spec/slack-ruby-bot/rspec/respond_with_slack_message_spec.rb
index b8a9d1a..881e1bc 100644
--- a/spec/slack-ruby-bot/rspec/respond_with_slack_message_spec.rb
+++ b/spec/slack-ruby-bot/rspec/respond_with_slack_message_spec.rb
@@ -1,6 +1,8 @@
 describe RSpec do
   let! :command do
     Class.new(SlackRubyBot::Commands::Base) do
+      command 'no message' do |client, data, _match|
+      end
       command 'single message with as_user' do |client, data, _match|
         client.say(text: 'single response', channel: data.channel, as_user: true)
       end
@@ -25,6 +27,22 @@ def app
     expect(message: "#{SlackRubyBot.config.user} single message")
       .to respond_with_slack_message(/single response/i)
   end
+  it 'respond with any message' do
+    expect(message: "#{SlackRubyBot.config.user} single message")
+      .to respond_with_slack_message
+  end
+  it 'correctly reports error' do
+    expect do
+      expect(message: "#{SlackRubyBot.config.user} single message")
+        .to respond_with_slack_message('another response')
+    end.to raise_error RSpec::Expectations::ExpectationNotMetError, "expected to receive message with text: another response once,\n received:[{:text=>\"single response\", :channel=>\"channel\"}]"
+  end
+  it 'correctly reports error without message' do
+    expect do
+      expect(message: "#{SlackRubyBot.config.user} no message")
+        .to respond_with_slack_message('another response')
+    end.to raise_error RSpec::Expectations::ExpectationNotMetError, "expected to receive message with text: another response once,\n received:none"
+  end
   it 'respond_with_single_message_using_partial_regex_match' do
     expect(message: "#{SlackRubyBot.config.user} single message")
       .to respond_with_slack_message(/si[n|N]gle/)
diff --git a/spec/slack-ruby-bot/rspec/respond_with_slack_messages_spec.rb b/spec/slack-ruby-bot/rspec/respond_with_slack_messages_spec.rb
index bf85a5c..a13d569 100644
--- a/spec/slack-ruby-bot/rspec/respond_with_slack_messages_spec.rb
+++ b/spec/slack-ruby-bot/rspec/respond_with_slack_messages_spec.rb
@@ -1,6 +1,11 @@
 describe RSpec do
   let! :command do
     Class.new(SlackRubyBot::Commands::Base) do
+      command 'do not respond' do |client, data, _match|
+      end
+      command 'respond once' do |client, data, _match|
+        client.say(text: 'response', channel: data.channel, as_user: true)
+      end
       command 'respond with as_user' do |client, data, _match|
         5.times do |i|
           client.say(text: "response #{i}", channel: data.channel, as_user: true)
@@ -29,6 +34,26 @@ def app
     expect(message: "#{SlackRubyBot.config.user} respond 5 times")
       .to respond_with_slack_messages(expected_responses)
   end
+  it 'respond with multiple messages' do
+    expect(message: "#{SlackRubyBot.config.user} respond 5 times")
+      .to respond_with_slack_messages
+  end
+  it 'respond once' do
+    expect do
+      expect(message: "#{SlackRubyBot.config.user} respond once")
+        .to respond_with_slack_messages
+    end.to raise_error RSpec::Expectations::ExpectationNotMetError, 'Expected to receive multiple messages, got 1'
+  end
+  it 'do not respond' do
+    expect(message: "#{SlackRubyBot.config.user} do not respond")
+      .to_not respond_with_slack_messages
+  end
+  it 'correctly reports error on do not respond' do
+    expect do
+      expect(message: "#{SlackRubyBot.config.user} do not respond")
+        .to respond_with_slack_messages
+    end.to raise_error RSpec::Expectations::ExpectationNotMetError, 'Expected to receive multiple messages, got none'
+  end
   it 'respond_with_multiple_messages_using_string_matches' do
     expected_responses = []
     5.times { |i| expected_responses.push("response #{i}") }
@@ -41,6 +66,15 @@ def app
     expect(message: "#{SlackRubyBot.config.user} respond 5 times")
       .not_to respond_with_slack_messages(expected_responses)
   end
+  it 'correctly reports error' do
+    expect do
+      expected_responses = []
+      6.times { |i| expected_responses.push("response #{i}") }
+      expect(message: "#{SlackRubyBot.config.user} respond 5 times")
+        .to respond_with_slack_messages(expected_responses)
+    end.to raise_error RSpec::Expectations::ExpectationNotMetError, 'Expected text: response 5, got none'
+  end
+
   it 'respond_with_multiple_messages_using_string_matches_with_extra_arg' do
     expected_responses = []
     5.times { |i| expected_responses.push("response #{i}") }
diff --git a/spec/slack-ruby-bot/rspec/start_typing_spec.rb b/spec/slack-ruby-bot/rspec/start_typing_spec.rb
new file mode 100644
index 0000000..9a16f7d
--- /dev/null
+++ b/spec/slack-ruby-bot/rspec/start_typing_spec.rb
@@ -0,0 +1,34 @@
+describe RSpec do
+  let! :command do
+    Class.new(SlackRubyBot::Commands::Base) do
+      command 'types on the correct channel' do |client, data, _match|
+        client.typing(channel: data.channel)
+      end
+      command 'types on another channel' do |client, _data, _match|
+        client.typing(channel: 'another')
+      end
+    end
+  end
+
+  def app
+    SlackRubyBot::App.new
+  end
+  it 'types on any channel' do
+    expect(message: "#{SlackRubyBot.config.user} types on the correct channel", channel: 'channel')
+      .to start_typing
+  end
+  it 'types on another channel' do
+    expect(message: "#{SlackRubyBot.config.user} types on another channel", channel: 'channel')
+      .to start_typing(channel: 'another')
+  end
+  it 'types an invalid channel' do
+    expect(message: "#{SlackRubyBot.config.user} types on another channel", channel: 'channel')
+      .to_not start_typing(channel: 'invalid')
+  end
+  it 'correctly reports error' do
+    expect do
+      expect(message: "#{SlackRubyBot.config.user} types on another channel", channel: 'channel')
+        .to start_typing(channel: 'invalid')
+    end.to raise_error RSpec::Expectations::ExpectationNotMetError, "expected to receive typing with: {:channel=>\"invalid\"} once,\n received:{:channel=>\"another\"}"
+  end
+end