1 files changed, 39 insertions, 0 deletions
diff --git a/testing/web-platform/tests/xhr/send-response-upload-event-loadstart.htm b/testing/web-platform/tests/xhr/send-response-upload-event-loadstart.htm
new file mode 100644
index 0000000000..7a9be9f8ca
--- /dev/null
+++ b/testing/web-platform/tests/xhr/send-response-upload-event-loadstart.htm
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <link rel="help" href="https://xhr.spec.whatwg.org/#handler-xhr-onloadstart" data-tested-assertations="../.." />
+    <link rel="help" href="https://xhr.spec.whatwg.org/#event-xhr-loadstart" data-tested-assertations="../.." />
+    <link rel="help" href="https://xhr.spec.whatwg.org/#the-send()-method" data-tested-assertations="following::ol[1]/li[8] following-sibling::ol/li[9]/ol/li[3]" />
+
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <title>XMLHttpRequest: The send() method: Fire a progress event named loadstart on the XMLHttpRequestUpload (synchronous flag is unset)</title>
+</head>
+
+<body>
+    <div id="log"></div>
+
+    <script type="text/javascript">
+        var test = async_test();
+
+        test.step(function()
+        {
+            var xhr = new XMLHttpRequest();
+
+            xhr.upload.onloadstart = function(e)
+            {
+                test.step(function()
+                {
+                    assert_true(e instanceof ProgressEvent);
+                    assert_equals(e.type, "loadstart");
+                    assert_equals(e.target, xhr.upload);
+                    test.done();
+                });
+            };
+
+            xhr.open("POST", "./resources/content.py", true);
+            xhr.send("Test Message");
+        });
+    </script>
+</body>
+</html>