1 files changed, 27 insertions, 0 deletions
diff --git a/testing/web-platform/tests/xhr/setrequestheader-allow-whitespace-in-value.htm b/testing/web-platform/tests/xhr/setrequestheader-allow-whitespace-in-value.htm
new file mode 100644
index 0000000000..f2e0a370e6
--- /dev/null
+++ b/testing/web-platform/tests/xhr/setrequestheader-allow-whitespace-in-value.htm
@@ -0,0 +1,27 @@
+<!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>