get '/javascripts/:file' => sub {
    my ($file) = splat;
    send_file( '/javascripts/' . params->{file},
        streaming    => 1,
        content_type => 'text/javascript',
    );
};

##</code><code>##

response_status_is  [ GET => '/javascripts/test.js' ], 200,
    'response status is 200 for /js/test.js';
response_content_is [ GET => '/javascripts/test.js' ], 'var test = 1;', 'Fetched JS';
response_headers_include [ GET => '/javascripts/test.js' ],
    [ 'Content-Type' => 'text/javascript' ], "MIME type set for JS";

##</code><code>##

not ok 4 - Fetched JS
#   Failed test 'Fetched JS'
#   at t/002_index_route.t line 14.
#          got: 'GLOB(0x31fa178)'
#     expected: 'var test = 1;'
not ok 5 - MIME type set for JS
#   Failed test 'MIME type set for JS'
#   at t/002_index_route.t line 15.
# Looks like you failed 2 tests of 5.

##</code><code>##

0  Dancer::Response=HASH(0x23dca98)
   'content' => GLOB(0x23eb3e8)
      -> *Dancer::FileUtils::$fh
            FileHandle({*Dancer::FileUtils::$fh}) => fileno(7)
   'encoded' => 0
   'forward' => ''
   'halted' => 0
   'headers' => HTTP::Headers=HASH(0x23e0060)
      'content-type' => MIME::Type=HASH(0x1706478)
         'MT_encoding' => '8bit'
         'MT_extensions' => ARRAY(0x1706580)
            0  'js'
         'MT_simplified' => 'application/javascript'
         'MT_type' => 'application/javascript'
      'last-modified' => 'Fri, 01 Mar 2013 15:31:21 GMT'
   'pass' => 0
   'status' => 200