diff --git a/lib/lenna/router/response.rb b/lib/lenna/router/response.rb
index b167c08..3a996d9 100644
--- a/lib/lenna/router/response.rb
+++ b/lib/lenna/router/response.rb
@@ -99,6 +99,13 @@ def put_headers(headers)
         headers.each { |key, value| put_header(key, value) }
       end
 
+      # This method will get the content type.
+      #
+      # @return [String] the content type
+      #
+      # @api public
+      def content_type = header('Content-Type')
+
       # This method will delete the header.
       # @param header [String] the header name
       #
diff --git a/test/test_lennarb.rb b/test/test_lennarb.rb
deleted file mode 100644
index c63ed31..0000000
--- a/test/test_lennarb.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-# frozen_string_literal: true
-
-require 'test_helper'
-
-class TestLennarb < Minitest::Test
-  def test_that_it_has_a_version_number
-    refute_nil ::Lennarb::VERSION
-  end
-
-  def test_it_does_something_useful
-    assert true
-  end
-end