1 files changed, 65 insertions, 0 deletions
diff --git a/test/wpt/tests/service-workers/service-worker/resources/fetch-request-css-cross-origin-worker.js b/test/wpt/tests/service-workers/service-worker/resources/fetch-request-css-cross-origin-worker.js
new file mode 100644
index 0000000..a71e912
--- /dev/null
+++ b/test/wpt/tests/service-workers/service-worker/resources/fetch-request-css-cross-origin-worker.js
@@ -0,0 +1,65 @@
+importScripts('/common/get-host-info.sub.js');
+importScripts('test-helpers.sub.js');
+
+const HOST_INFO = get_host_info();
+const REMOTE_ORIGIN = HOST_INFO.HTTPS_REMOTE_ORIGIN;
+const BASE_PATH = base_path();
+const CSS_FILE = 'fetch-request-css-cross-origin-mime-check-cross.css';
+const HTML_FILE = 'fetch-request-css-cross-origin-mime-check-cross.html';
+
+function add_pipe_header(url_str, header) {
+  if (url_str.indexOf('?pipe=') == -1) {
+    url_str += '?pipe=';
+  } else {
+    url_str += '|';
+  }
+  url_str += `header${header}`;
+  return url_str;
+}
+
+self.addEventListener('fetch', function(event) {
+    const url = new URL(event.request.url);
+
+    const use_mime =
+        (url.searchParams.get('mime') != 'no');
+    const mime_header = '(Content-Type, text/css)';
+
+    const use_cors =
+        (url.searchParams.has('cors'));
+    const cors_header = '(Access-Control-Allow-Origin, *)';
+
+    const file = url.pathname.substring(url.pathname.lastIndexOf('/') + 1);
+
+    // Respond with a cross-origin CSS resource, using CORS if desired.
+    if (file == 'cross-origin-css.css') {
+      let fetch_url =  REMOTE_ORIGIN + BASE_PATH + CSS_FILE;
+      if (use_mime)
+        fetch_url = add_pipe_header(fetch_url, mime_header);
+      if (use_cors)
+        fetch_url = add_pipe_header(fetch_url, cors_header);
+      const mode = use_cors ? 'cors' : 'no-cors';
+      event.respondWith(fetch(fetch_url, {'mode': mode}));
+      return;
+    }
+
+    // Respond with a cross-origin CSS resource with an HTML name. This is only
+    // used in the MIME sniffing test, so MIME is never added.
+    if (file == 'cross-origin-html.css') {
+      const fetch_url = REMOTE_ORIGIN + BASE_PATH + HTML_FILE;
+      event.respondWith(fetch(fetch_url, {mode: 'no-cors'}));
+      return;
+    }
+
+    // Respond with synthetic CSS.
+    if (file == 'synthetic.css') {
+      let headers = {};
+      if (use_mime) {
+        headers['Content-Type'] = 'text/css';
+      }
+
+      event.respondWith(new Response("#synthetic { color: blue; }", {headers}));
+      return;
+    }
+
+    // Otherwise, fallback to network.
+  });