wasm/jsapi/functions/entry-different-function-realm.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Entry settings object for host functions when the function realm is different from the test realm</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/wasm/jsapi/wasm-module-builder.js"></script>
<script src="/wasm/jsapi/functions/helper.js"></script>

<!-- This is what would normally be considered the entry page. However, we use functions from the
     resources/function/function.html realm. So window.open() should resolve relative to that realm
     inside host functions. -->

<iframe src="resources/entry-incumbent.html"></iframe>
<iframe src="resources/function/function.html" id="function-frame"></iframe>

<script>
setup({ explicit_done: true });

const relativeURL = "resources/window-to-open.html";
const expectedURL = (new URL(relativeURL, document.querySelector("#function-frame").src)).href;

const incumbentWindow = frames[0];
const functionWindow = frames[1];
const FunctionFromAnotherWindow = functionWindow.Function;

window.onload = () => {
  async_test(t => {
    t.add_cleanup(() => { delete functionWindow.args; });
    functionWindow.args = [incumbentWindow, relativeURL, t, assert_equals, expectedURL];

    const func = FunctionFromAnotherWindow(`
      const [incumbentWindow, relativeURL, t, assert_equals, expectedURL] = window.args;

      const w = incumbentWindow.runWindowOpenVeryIndirectly(relativeURL);
      w.onload = t.step_func_done(() => {
        t.add_cleanup(() => w.close());
        assert_equals(w.location.href, expectedURL);
      });
    `);
    call_later(func);
  }, "Start function");

  done();
};
</script>