dynamic-import.html

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This WPT test may be referenced by the following Test IDs:
- /import-maps/acquiring/dynamic-import.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

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

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

<script>

const t = async_test(

  'After dynamic imports, import maps should fire error events');

const log = [];

// To ensure we are testing that the flag is cleared at the beginning of module

// script loading unconditionally, not at the end of loading or not at the

// first attempt to resolve a module specifier, trickle(d1) is used to ensure

// the following import map is added after module loading is triggered but

// before the first module script is parsed.

promise_test(() => import('../resources/empty.js?pipe=trickle(d1)'),

             "A dynamic import succeeds");

</script>

<script type="importmap" onload="t.assert_unreached('onload')" onerror="t.done()">

  "imports": {

    "../resources/log.js?pipe=sub&name=A": "../resources/log.js?pipe=sub&name=B"

</script>

<script>

promise_test(() => {

  return import("../resources/log.js?pipe=sub&name=A")

    .then(() => assert_array_equals(log, ["log:A"]))

},

  'After a dynamic import(), import maps are not effective');

</script>