| <!DOCTYPE html> | 
 | <html> | 
 |  <head> | 
 |  <title>XMLHttpRequest: setRequestHeader() - header value with whitespace</title> | 
 |  <script src="/resources/testharness.js"></script> | 
 |  <script src="/resources/testharnessreport.js"></script> | 
 |  <link rel="help" href="https://xhr.spec.whatwg.org/#the-setrequestheader()-method"> | 
 |  </head> | 
 |  <body> | 
 |  <div id="log"></div> | 
 |  <script> | 
 |  function request(value) { | 
 |  test(function() { | 
 |  var client = new XMLHttpRequest() | 
 |  client.open("POST", "resources/inspect-headers.py?filter_name=X-Empty", false) | 
 |  client.setRequestHeader('X-Empty', value) | 
 |  client.send(null) | 
 |  assert_equals(client.responseText, 'X-Empty: ' + value.trim() + '\n' ) | 
 |  }, document.title + " (" + value + ")") | 
 |  } | 
 |  request(" ") | 
 |  request(" t") | 
 |  request("t ") | 
 |  request(" t ") | 
 |  </script> | 
 |  </body> | 
 | </html> |