1 files changed, 47 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events-onerror.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events-onerror.html
new file mode 100644
index 0000000000..b6c02d27c9
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events-onerror.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="help" href="https://html.spec.whatwg.org/#runtime-script-errors">
+<link rel="help" href="https://html.spec.whatwg.org/#unhandled-promise-rejections">
+<script>
+'use strict';
+setup({
+  allow_uncaught_exception: true
+});
+async_test(function(t) {
+  var e = new Error('e');
+  var e2 = new Error('e2');
+
+  window.onerror = function (msg, url, line, col, error) {
+    t.step(function() {
+      assert_true(msg.includes('e2'));
+      assert_equals(error, e2);
+    });
+    t.done();
+  };
+
+  window.onrejectionhandled = function() {
+    // This should cause onerror
+    throw e2;
+  };
+
+  var p = Promise.reject(e);
+  queueTask(function() {
+    queueTask(t.step_func(function() {
+      // This will cause onrejectionhandled
+      p.catch(function() {});
+    }));
+  });
+}, 'Throwing inside an unhandledrejection handler invokes the error handler.');
+
+// This function queues a task in "DOM manipulation task source"
+function queueTask(f) {
+  var d = document.createElement("details");
+  d.ontoggle = function() {
+    f();
+  };
+
+  d.setAttribute("open", "");
+}
+</script>