참고소스 수정본

참고/playwright-main/tests/assets/serviceworkers/fetchdummy/sw.html

@@ -0,0 +1,12 @@
+<script>
+  window.registrationPromise = navigator.serviceWorker.register('sw.js');
+  window.activationPromise = new Promise(resolve => navigator.serviceWorker.oncontrollerchange = resolve);
+
+  async function fetchDummy(name) {
+    const response = await fetch(name);
+    if (!response.ok)
+      return 'FAILURE: ' + response.statusText;
+    const text = await response.text();
+    return text;
+  }
+</script>

참고/playwright-main/tests/assets/serviceworkers/fetchdummy/sw.js

@@ -0,0 +1,19 @@
+self.addEventListener('fetch', event => {
+  if (event.request.url.endsWith('.html') || event.request.url.includes('passthrough')) {
+    event.respondWith(fetch(event.request));
+    return;
+  }
+  if (event.request.url.includes('error')) {
+    event.respondWith(Promise.reject(new Error('uh oh')));
+    return;
+  }
+  const slash = event.request.url.lastIndexOf('/');
+  const name = event.request.url.substring(slash + 1);
+  const blob = new Blob(["responseFromServiceWorker:" + name], {type : 'text/css'});
+  const response = new Response(blob, { "status" : 200 , "statusText" : "OK" });
+  event.respondWith(response);
+});
+
+self.addEventListener('activate', event => {
+  event.waitUntil(clients.claim());
+});