joint-session-history-iframe-state.html

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/history/joint-session-history/joint-session-history-iframe-state.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>Joint session history should not override parent's state.</title>

<meta name="timeout" content="long">

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

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

<body>

<iframe id="frame" src="about:blank"></iframe>

<script>

async_test(function(t) {

    // Setup.

    var initialState = {foo: 'bar'};

    var newStateFromChild = {foo: 'baz'};

    var child = document.getElementById("frame");

    // Child's initial state should be a default empty state.

    assert_equals(child.contentWindow.history.state, null);

    // Perform navigation in the top-level container to set the state.

    window.history.pushState(initialState, 'title');

    // Validate initial state was properly set.

    assert_object_equals(window.history.state, initialState);

    child.onload = t.step_func_done(() => {

        // Child's initial state should be `null`.

        assert_equals(child.contentWindow.history.state, null);

        // Navigate in the child.

        child.contentWindow.history.pushState(newStateFromChild, 'title');

        // Child's state should now equal the new state.

        assert_object_equals(child.contentWindow.history.state, newStateFromChild);

        // Parent's state should still be preserved, having exactly the same state as it

        // had before parent navigated.

        assert_object_equals(window.history.state, initialState);

})

    child.src = "joint-session-history-filler.html";

});

</script>

</body>