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<title>Network Observer missing service worker test page</title>
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<p>Network Observer test page</p>
<script type="text/javascript">
/* exported registerServiceWorker */
"use strict";
function registerServiceWorker() {
const sw = navigator.serviceWorker;
// NOTE: This service worker file does not exist which enables testing
// that a 404 requests is received.
return sw.register("serviceworker-missing.js")
.then(() => {
throw new Error("The Service Worker file should not exist");
}).catch(() => {
console.log("Registration failed as expected");
});
}
</script>
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