positional-template-child.html

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This test has a WPT meta file that expects 12 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /domparsing/tentative/positional-template-child.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8" />

<title>

  HTML partial updates - template child

</title>

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

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

<body>

  <script>

    for (const safe of [true, false]) {

      for (const method of [

        "afterHTML",

        "beforeHTML",

        "replaceWithHTML",

        "streamAfterHTML",

        "streamBeforeHTML",

        "streamReplaceWithHTML",

      ]) {

        const method_name = `${method}${safe ? "" : "Unsafe"}`;

        test(() => {

          const template = document.createElement("template");

          const child = document.createElement("div");

          template.appendChild(child);

          assert_throws_dom("HierarchyRequestError", () => {

            if (method.startsWith("stream")) {

              child[method_name]();

            } else {

              child[method_name]('<span></span>');

});

        }, `${method_name} on a direct child of a template element throws HierarchyRequestError`);

  </script>

</body>