disambigaute-traverseTo-back-multiple.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /navigation-api/navigation-methods/disambigaute-traverseTo-back-multiple.html - WPT Dashboard Interop Dashboard

<!doctype html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<iframe id="i" src="/common/blank.html"></iframe>

<script>

async_test(t => {

  let start_length = navigation.entries().length;

  let start_index = navigation.currentEntry.index;

  // Wait for after the load event so that the navigation doesn't get converted

  // into a replace navigation.

  window.onload = () => t.step_timeout(() => {

    assert_equals(navigation.entries().length, start_length);

    assert_equals(i.contentWindow.navigation.entries().length, 1);

    navigation.navigate("#top");

    assert_equals(navigation.entries().length, start_length+1);

    assert_equals(i.contentWindow.navigation.entries().length, 1);

    let iframe_initial_key = i.contentWindow.navigation.currentEntry.key;

    i.contentWindow.navigation.navigate("#1");

    i.contentWindow.navigation.navigate("#2");

    assert_equals(navigation.entries().length, start_length+1);

    assert_equals(i.contentWindow.navigation.entries().length, 3);

    assert_equals(navigation.currentEntry.index, start_index+1);

    assert_equals(i.contentWindow.navigation.currentEntry.index, 2);

    assert_true(navigation.canGoBack);

    assert_true(i.contentWindow.navigation.canGoBack);

    // There are 2 joint session history entries containing the iframe's

    // initial key.  Navigate to the nearest one (which navigates the iframe

    // but not the top window).

    i.contentWindow.navigation.traverseTo(iframe_initial_key).committed.then(t.step_func_done(() => {

      assert_equals(navigation.currentEntry.index, start_index+1);

      assert_equals(i.contentWindow.navigation.currentEntry.index, 0);

    }));

  }, 0);

}, "navigation.traverseTo() goes to the nearest entry when going back");

</script>