reentrancy-on-serialize.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/updateCurrentEntry-method/reentrancy-on-serialize.html - WPT Dashboard Interop Dashboard

<!doctype html>

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

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

<title> </title>

<body>

  <script>

    const phase = new URLSearchParams(location.search).get("phase") || "test";

    switch (phase) {

      case "test":

        promise_test(async (t) => {

          const popup = window.open("?phase=start");

          t.add_cleanup(() => popup.close());

          window.step1 = Promise.withResolvers();

          window.step2 = Promise.withResolvers();

          const step1_result = await window.step1.promise;

          assert_equals(step1_result.nav, "nav");

          assert_equals(step1_result.result, "ok");

          const step2_result = await window.step2.promise;

          assert_equals(step2_result.nav, "nav");

          assert_equals(step2_result.result, "ok");

});

        break;

      case "start":

        (async (t) => {

          await new Promise((resolve) =>

            window.addEventListener("load", resolve),

);

          navigation.updateCurrentEntry({ state: "before" });

          const { key } = navigation.currentEntry;

          const navigated = Promise.withResolvers();

          navigation.updateCurrentEntry({

            state: {

              get nav() {

                navigation

                  .navigate("#elsewhere", { history: "push" })

                  .finished.then(() => navigated.resolve());

                return "nav";

},

              result: "ok",

},

});

          await navigated.promise;

          await navigation.traverseTo(key).finished;

          window.addEventListener("pageswap", (e) => {

            opener.step2.resolve(e.activation.from.getState());

});

          window.opener.step1.resolve(navigation.currentEntry.getState());

          navigation.navigate("?phase=end", { history: "push" });

        })();

        break;

      case "end":

        break;

      default:

        throw new Error("Invalid phase");

  </script>

</body>