1 files changed, 19 insertions, 0 deletions
diff --git a/dom/xhr/tests/worker_bug1697539.js b/dom/xhr/tests/worker_bug1697539.js
new file mode 100644
index 0000000000..faef1f1614
--- /dev/null
+++ b/dom/xhr/tests/worker_bug1697539.js
@@ -0,0 +1,19 @@
+onmessage = function (e) {
+  let xhr = new XMLHttpRequest();
+  let already_sent = false;
+  xhr.addEventListener("readystatechange", event => {
+    try {
+      event.originalTarget.send("test");
+    } catch (error) {
+      if (error.name == "InvalidStateError") {
+        if (!already_sent) {
+          postMessage(error.name);
+          already_sent = true;
+        }
+      }
+    }
+  });
+
+  xhr.open("POST", e.data, false);
+  xhr.send();
+};