1 files changed, 24 insertions, 0 deletions
diff --git a/testing/web-platform/tests/navigation-api/navigation-history-entry/key-id-back-same-document.html b/testing/web-platform/tests/navigation-api/navigation-history-entry/key-id-back-same-document.html
new file mode 100644
index 0000000000..858b5fd2c8
--- /dev/null
+++ b/testing/web-platform/tests/navigation-api/navigation-history-entry/key-id-back-same-document.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+async_test(t => {
+  let key = navigation.currentEntry.key;
+  let id = navigation.currentEntry.id;
+  assert_equals(navigation.entries().length, 1);
+
+  history.pushState("hash", "", "#hash");
+  assert_not_equals(key, navigation.currentEntry.key);
+  assert_not_equals(id, navigation.currentEntry.id);
+  assert_equals(navigation.entries().length, 2);
+  assert_equals(navigation.currentEntry.index, 1);
+
+  window.onpopstate = t.step_func_done(() => {
+    assert_equals(key, navigation.currentEntry.key);
+    assert_equals(id, navigation.currentEntry.id);
+    assert_equals(navigation.entries().length, 2);
+    assert_equals(navigation.currentEntry.index, 0);
+  });
+  history.back();
+}, "NavigationHistoryEntry's key and id on same-document back navigation");
+</script>