|  | <!DOCTYPE html> | 
|  | <!-- | 
|  | Test from https://bugzilla.mozilla.org/show_bug.cgi?id=819051 | 
|  | --> | 
|  | <head> | 
|  | <title>XMLHttpRequest: setRequestHeader() and open()</title> | 
|  | <script src="/resources/testharness.js"></script> | 
|  | <script src="/resources/testharnessreport.js"></script> | 
|  | <link rel="help" href="https://xhr.spec.whatwg.org/#the-open()-method" data-tested-assertations="following::OL[1]/LI[14]/ul[1]/li[4]" /> | 
|  | <link rel="help" href="https://xhr.spec.whatwg.org/#the-setrequestheader()-method" data-tested-assertations="following::OL[1]/LI[6] following::ol[1]/li[7]" /> | 
|  | </head> | 
|  | <body> | 
|  | <p id="log"></p> | 
|  | <script type="text/javascript"> | 
|  | var test = async_test(); | 
|  |  | 
|  | var url = "resources/inspect-headers.py"; | 
|  |  | 
|  | var xhr = new XMLHttpRequest(); | 
|  | xhr.open("GET", url + "?filter_name=x-appended-to-this"); | 
|  | xhr.setRequestHeader("X-appended-to-this", "False"); | 
|  | xhr.open("GET", url + "?filter_name=x-appended-to-this"); | 
|  | xhr.setRequestHeader("X-appended-to-this", "True"); | 
|  |  | 
|  | xhr.onreadystatechange = function() { | 
|  | if (this.readyState == 4) { | 
|  | test.step(function (){ | 
|  | assert_equals(xhr.responseText, "x-appended-to-this: True\n", "Set headers record should have been cleared by open."); | 
|  | test_standard_header(); | 
|  | }); | 
|  | } | 
|  | } | 
|  |  | 
|  | xhr.send(); | 
|  |  | 
|  | function test_standard_header () { | 
|  | var header_tested = "Accept"; | 
|  | var xhr = new XMLHttpRequest(); | 
|  | xhr.open("GET", url + "?filter_name=accept"); | 
|  | xhr.setRequestHeader("Accept", "foo/bar"); | 
|  | xhr.open("GET", url + "?filter_name=accept"); | 
|  | xhr.setRequestHeader("Accept", "bar/foo"); | 
|  |  | 
|  | xhr.onreadystatechange = function() { | 
|  | if (this.readyState == 4) { | 
|  | test.step(function (){ | 
|  | assert_equals(xhr.responseText, "accept: bar/foo\n", "Set headers record should have been cleared by open."); | 
|  | test.done(); | 
|  | }); | 
|  | } | 
|  | } | 
|  |  | 
|  | xhr.send(); | 
|  | } | 
|  |  | 
|  |  | 
|  | </script> | 
|  | </pre> | 
|  | </body> | 
|  | </html> |