1 files changed, 33 insertions, 0 deletions
diff --git a/testing/web-platform/tests/xhr/open-after-setrequestheader.htm b/testing/web-platform/tests/xhr/open-after-setrequestheader.htm
new file mode 100644
index 0000000000..ca1ae25946
--- /dev/null
+++ b/testing/web-platform/tests/xhr/open-after-setrequestheader.htm
@@ -0,0 +1,33 @@
+<!doctype html>
+<html>
+  <head>
+    <title>XMLHttpRequest: open() after setRequestHeader()</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">
+
+  </head>
+  <body>
+    <div id="log"></div>
+    <script>
+      var test = async_test()
+      test.step(function() {
+        var client = new XMLHttpRequest()
+        client.onreadystatechange = function() {
+          test.step(function() {
+            if(client.readyState === 4){
+              assert_equals(client.responseText, '')
+              test.done()
+            }
+          })
+        }
+        client.open("GET", "resources/inspect-headers.py?filter_name=X-foo")
+        assert_equals(client.readyState, 1)
+        client.setRequestHeader('X-foo', 'bar')
+        client.open("GET", "resources/inspect-headers.py?filter_name=X-foo")
+        assert_equals(client.readyState, 1)
+        client.send()
+      })
+    </script>
+  </body>
+</html>