1 files changed, 54 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/metadata/tools/templates/worker-dedicated-importscripts.sub.html b/testing/web-platform/tests/fetch/metadata/tools/templates/worker-dedicated-importscripts.sub.html
new file mode 100644
index 0000000000..93e6374d54
--- /dev/null
+++ b/testing/web-platform/tests/fetch/metadata/tools/templates/worker-dedicated-importscripts.sub.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<!--
+[%provenance%]
+-->
+<html lang="en">
+  <meta charset="utf-8">
+  <title>HTTP headers on request for dedicated worker via the "importScripts" API</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="/fetch/metadata/resources/helper.sub.js"></script>
+  <script type="module">
+  'use strict';
+  function induceRequest(url, options) {
+    const src = `
+      importScripts('${url}');
+      postMessage('done');
+    `;
+    const workerUrl = URL.createObjectURL(
+      new Blob([src], { type: 'application/javascript' })
+    );
+    return new Promise((resolve, reject) => {
+      const worker = new Worker(workerUrl, options);
+      worker.onmessage = resolve;
+      worker.onerror = reject;
+    });
+  }
+
+  {%- for subtest in subtests %}
+
+  promise_test(() => {
+    const key = '{{uuid()}}';
+    const url = makeRequestURL(
+      key, [% subtest.origins %], { mime: 'application/javascript' }
+    );
+
+    return induceRequest(url
+      {%- if subtest.options -%}
+        , [% subtest.options | tojson %]
+      {%- endif -%}
+      )
+      .then(() => retrieve(key))
+      .then((headers) => {
+        {%- if subtest.expected == none %}
+          assert_not_own_property(headers, '[%subtest.headerName%]');
+        {%- else %}
+          assert_own_property(headers, '[%subtest.headerName%]');
+          assert_array_equals(headers['[%subtest.headerName%]'], ['[%subtest.expected%]']);
+        {%- endif %}
+        });
+  }, '[%subtest.headerName%][%subtest.description | pad("start", " - ")%]');
+
+  {%- endfor %}
+  </script>
+</html>