1 files changed, 31 insertions, 0 deletions
diff --git a/testing/web-platform/tests/navigation-api/navigation-methods/return-value/reload-beforeunload.html b/testing/web-platform/tests/navigation-api/navigation-methods/return-value/reload-beforeunload.html
new file mode 100644
index 0000000000..05338acc5e
--- /dev/null
+++ b/testing/web-platform/tests/navigation-api/navigation-methods/return-value/reload-beforeunload.html
@@ -0,0 +1,31 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/helpers.js"></script>
+
+<iframe id="i" src="/common/blank.html"></iframe>
+
+<script>
+promise_test(async t => {
+  await new Promise(resolve => window.onload = resolve);
+
+  let navigateEventCount = 0;
+  i.contentWindow.navigation.onnavigate = () => navigateEventCount++;
+  i.contentWindow.navigation.onnavigatesuccess = t.unreached_func("onnavigatesuccess should not be called");
+  i.contentWindow.navigation.onnavigateerror = t.unreached_func("onnavigateerror should not be called");
+
+  let assertionPromise;
+  // The iframe does not have sticky activation, so per
+  // https://html.spec.whatwg.org/#prompt-to-unload-a-document, no prompt is
+  // shown and the navigation will proceed.
+  i.contentWindow.onbeforeunload = t.step_func(() => {
+    assertionPromise = assertBothRejectDOM(t, i.contentWindow.navigation.reload(), "InvalidStateError", i.contentWindow);
+  });
+  i.contentWindow.navigation.navigate("?1");
+
+  assert_not_equals(assertionPromise, undefined);
+  await assertionPromise;
+
+  assert_equals(navigateEventCount, 1);
+}, "reload() inside onbeforeunload");
+</script>