1 files changed, 97 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_channel_priority.js b/netwerk/test/unit/test_channel_priority.js
new file mode 100644
index 0000000000..2a757de90a
--- /dev/null
+++ b/netwerk/test/unit/test_channel_priority.js
@@ -0,0 +1,97 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* globals NetUtil*/
+/* globals HttpServer */
+const { HttpServer } = ChromeUtils.import("resource://testing-common/httpd.js");
+
+let httpserver;
+let port;
+
+function startHttpServer() {
+  httpserver = new HttpServer();
+
+  httpserver.registerPathHandler("/resource", (metadata, response) => {
+    response.setStatusLine(metadata.httpVersion, 200, "OK");
+    response.setHeader("Content-Type", "text/plain", false);
+    response.setHeader("Cache-Control", "no-cache", false);
+    response.bodyOutputStream.write("data", 4);
+  });
+
+  httpserver.registerPathHandler("/redirect", (metadata, response) => {
+    response.setStatusLine(metadata.httpVersion, 302, "Redirect");
+    response.setHeader("Location", "/resource", false);
+    response.setHeader("Cache-Control", "no-cache", false);
+  });
+
+  httpserver.start(-1);
+  port = httpserver.identity.primaryPort;
+}
+
+function stopHttpServer() {
+  httpserver.stop(() => {});
+}
+
+function makeRequest(uri) {
+  let requestChannel = NetUtil.newChannel({
+    uri,
+    loadUsingSystemPrincipal: true,
+  });
+  requestChannel.QueryInterface(Ci.nsISupportsPriority);
+  requestChannel.priority = Ci.nsISupportsPriority.PRIORITY_HIGHEST;
+  requestChannel.asyncOpen(new ChannelListener(checkResponse, requestChannel));
+}
+
+function checkResponse(request, buffer, requestChannel) {
+  requestChannel.QueryInterface(Ci.nsISupportsPriority);
+  Assert.equal(
+    requestChannel.priority,
+    Ci.nsISupportsPriority.PRIORITY_HIGHEST
+  );
+
+  // the response channel can be different (if it was redirected)
+  let responseChannel = request.QueryInterface(Ci.nsISupportsPriority);
+  Assert.equal(
+    responseChannel.priority,
+    Ci.nsISupportsPriority.PRIORITY_HIGHEST
+  );
+
+  run_next_test();
+}
+
+add_test(function test_regular_request() {
+  makeRequest(`http://localhost:${port}/resource`);
+});
+
+add_test(function test_redirect() {
+  makeRequest(`http://localhost:${port}/redirect`);
+});
+
+function run_test() {
+  // jshint ignore:line
+  if (!runningInParent) {
+    // add a task to report test finished to parent process at the end of test queue,
+    // since do_register_cleanup is not available in child xpcshell test script.
+    add_test(function() {
+      do_send_remote_message("finished");
+      run_next_test();
+    });
+
+    // waiting for parent process to assign server port via configPort()
+    return;
+  }
+
+  startHttpServer();
+  registerCleanupFunction(stopHttpServer);
+  run_next_test();
+}
+
+// This is used by unit_ipc/test_channel_priority_wrap.js for e10s XPCShell test
+function configPort(serverPort) {
+  // jshint ignore:line
+  port = serverPort;
+  run_next_test();
+}