1 files changed, 18 insertions, 0 deletions
diff --git a/testing/web-platform/tests/workers/WorkerGlobalScope_ErrorEvent_colno.htm b/testing/web-platform/tests/workers/WorkerGlobalScope_ErrorEvent_colno.htm
new file mode 100644
index 0000000000..793d6c1807
--- /dev/null
+++ b/testing/web-platform/tests/workers/WorkerGlobalScope_ErrorEvent_colno.htm
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title> WorkerGlobalScope onerror event handler argument: col </title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+// The worker events races with the window's load event; if the worker events
+// arrive first, the harness will detect the error event and fail the test.
+setup({ allow_uncaught_exception: true });
+
+async_test(function(t) {
+  var worker = new Worker('./support/ErrorEvent.js');
+  worker.onmessage = t.step_func_done(function(e) {
+    assert_equals(typeof e.data.colno, "number");
+  });
+  worker.postMessage("Error Message");
+});
+</script>