service worker: XSLT: Use response URL for the base URL.

This aligns with the standard. See whatwg/fetch#146 Chrome Status: https://www.chromestatus.com/feature/4857368017895424 No intent to ship because it's a trivial change. Bug: 914135 Change-Id: I229aec6f8473bb6b7cdc88429afa830bc6eb80ed
web-platform-tests · Dec 12, 2018 · 7a4c2c0 · 7a4c2c0
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diff --git a/service-workers/service-worker/resources/import-relative.xsl b/service-workers/service-worker/resources/import-relative.xsl
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+    <xsl:import href="xslt-pass.xsl"/>
+</xsl:stylesheet>
diff --git a/service-workers/service-worker/resources/xsl-base-url-iframe.xml b/service-workers/service-worker/resources/xsl-base-url-iframe.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/xsl" href="resources/request-url-path/import-relative.xsl"?>
+<stylesheet-test>
+This tests a stylesheet which has a xsl:import with a relative URL.
+</stylesheet-test>
diff --git a/service-workers/service-worker/resources/xsl-base-url-worker.js b/service-workers/service-worker/resources/xsl-base-url-worker.js
@@ -0,0 +1,12 @@
+self.addEventListener('fetch', event => {
+  const url = new URL(event.request.url);
+
+  // For the import-relative.xsl file, respond in a way that changes the
+  // response URL. This is expected to change the base URL and allow the import
+  // from the file to succeed.
+  const path = 'request-url-path/import-relative.xsl';
+  if (url.pathname.indexOf(path) != -1) {
+    // Respond with a different URL, deleting "request-url-path/".
+    event.respondWith(fetch('import-relative.xsl'));
+  }
+});
diff --git a/service-workers/service-worker/resources/xslt-pass.xsl b/service-workers/service-worker/resources/xslt-pass.xsl
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+  <xsl:template match="/">
+    <html>
+      <body>
+           <p>PASS</p>
+      </body>
+    </html>
+  </xsl:template>
+</xsl:stylesheet>
diff --git a/service-workers/service-worker/xsl-base-url.https.html b/service-workers/service-worker/xsl-base-url.https.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Service Worker: XSL's base URL must be the response URL</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/test-helpers.sub.js?pipe=sub"></script>
+<script>
+// This test loads an XML document which is controlled a service worker. The
+// document loads a stylesheet and a service worker responds with another URL.
+// The stylesheet imports a relative URL to test that the base URL is the
+// response URL from the service worker.
+promise_test(async (t) => {
+  const SCOPE = 'resources/xsl-base-url-iframe.xml';
+  const SCRIPT = 'resources/xsl-base-url-worker.js';
+  let worker;
+  let frame;
+
+  t.add_cleanup(() => {
+    if (frame)
+      frame.remove();
+    service_worker_unregister(t, SCOPE);
+  });
+
+  const registration = await service_worker_unregister_and_register(
+      t, SCRIPT, SCOPE);
+  worker = registration.installing;
+  await wait_for_state(t, worker, 'activated');
+
+  frame = await with_iframe(SCOPE);
+  assert_equals(frame.contentDocument.body.textContent, 'PASS');
+}, 'base URL when service worker does respondWith(fetch(responseUrl))');
+</script>