| <!doctype html> |
| <meta charset="utf-8"> |
| <title>Do only fully active documents count for session history?</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <body> |
| <iframe id="child"></iframe> |
| </body> |
| <script> |
| async_test(function(t) { |
| var old_history_len = window.history.length; |
| var child = document.getElementById("child"); |
| var timer = window.setInterval(t.step_func(poll), 100); |
| function poll() { |
| if (child.getAttribute("data-child-loaded")) { |
| // Check to see how many entries have been added to the session history. |
| // The spec https://html.spec.whatwg.org/multipage/#joint-session-history |
| // says that only fully active documents are included in the joint session history. |
| // If only fully active documents count, then the only fully active document |
| // is the child, with session length 1, so the joint session length change will be 1. |
| // If all documents count, then the grandchild is reachable via the session history, |
| // and it has session length 1, so the joint session length change will be 2. |
| assert_equals(2, window.history.length - old_history_len); |
| window.clearInterval(timer); |
| t.done(); |
| } |
| } |
| child.src = "joint-session-history-child1.html"; |
| }); |
| </script> |
