1 files changed, 177 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_suspend_channel_on_modified.js b/netwerk/test/unit/test_suspend_channel_on_modified.js
new file mode 100644
index 0000000000..1a5090176c
--- /dev/null
+++ b/netwerk/test/unit/test_suspend_channel_on_modified.js
@@ -0,0 +1,177 @@
+// This file tests async handling of a channel suspended in http-on-modify-request.
+"use strict";
+
+const { HttpServer } = ChromeUtils.import("resource://testing-common/httpd.js");
+
+var obs = Services.obs;
+
+var ios = Services.io;
+
+// baseUrl is always the initial connection attempt and is handled by
+// failResponseHandler since every test expects that request will either be
+// redirected or cancelled.
+var baseUrl;
+
+function failResponseHandler(metadata, response) {
+  var text = "failure response";
+  response.setHeader("Content-Type", "text/plain", false);
+  response.bodyOutputStream.write(text, text.length);
+  Assert.ok(false, "Received request when we shouldn't.");
+}
+
+function successResponseHandler(metadata, response) {
+  var text = "success response";
+  response.setHeader("Content-Type", "text/plain", false);
+  response.bodyOutputStream.write(text, text.length);
+  Assert.ok(true, "Received expected request.");
+}
+
+function onModifyListener(callback) {
+  obs.addObserver(
+    {
+      observe(subject, topic, data) {
+        var obs = Cc["@mozilla.org/observer-service;1"].getService();
+        obs = obs.QueryInterface(Ci.nsIObserverService);
+        obs.removeObserver(this, "http-on-modify-request");
+        callback(subject.QueryInterface(Ci.nsIHttpChannel));
+      },
+    },
+    "http-on-modify-request"
+  );
+}
+
+function startChannelRequest(baseUrl, flags, expectedResponse = null) {
+  var chan = NetUtil.newChannel({
+    uri: baseUrl,
+    loadUsingSystemPrincipal: true,
+  });
+  chan.asyncOpen(
+    new ChannelListener(
+      (request, data, context) => {
+        if (expectedResponse) {
+          Assert.equal(data, expectedResponse);
+        } else {
+          Assert.ok(!data, "no response");
+        }
+        executeSoon(run_next_test);
+      },
+      null,
+      flags
+    )
+  );
+}
+
+add_test(function testSimpleRedirect() {
+  onModifyListener(chan => {
+    chan.redirectTo(ios.newURI(`${baseUrl}/success`));
+  });
+  startChannelRequest(baseUrl, undefined, "success response");
+});
+
+add_test(function testSimpleCancel() {
+  onModifyListener(chan => {
+    chan.cancel(Cr.NS_BINDING_ABORTED);
+  });
+  startChannelRequest(baseUrl, CL_EXPECT_FAILURE);
+});
+
+add_test(function testSimpleCancelRedirect() {
+  onModifyListener(chan => {
+    chan.redirectTo(ios.newURI(`${baseUrl}/fail`));
+    chan.cancel(Cr.NS_BINDING_ABORTED);
+  });
+  startChannelRequest(baseUrl, CL_EXPECT_FAILURE);
+});
+
+// Test a request that will get redirected asynchronously.  baseUrl should
+// not be requested, we should receive the request for the redirectedUrl.
+add_test(function testAsyncRedirect() {
+  onModifyListener(chan => {
+    // Suspend the channel then yield to make this async.
+    chan.suspend();
+    Promise.resolve().then(() => {
+      chan.redirectTo(ios.newURI(`${baseUrl}/success`));
+      chan.resume();
+    });
+  });
+  startChannelRequest(baseUrl, undefined, "success response");
+});
+
+add_test(function testSyncRedirect() {
+  onModifyListener(chan => {
+    chan.suspend();
+    chan.redirectTo(ios.newURI(`${baseUrl}/success`));
+    Promise.resolve().then(() => {
+      chan.resume();
+    });
+  });
+  startChannelRequest(baseUrl, undefined, "success response");
+});
+
+add_test(function testAsyncCancel() {
+  onModifyListener(chan => {
+    // Suspend the channel then yield to make this async.
+    chan.suspend();
+    Promise.resolve().then(() => {
+      chan.cancel(Cr.NS_BINDING_ABORTED);
+      chan.resume();
+    });
+  });
+  startChannelRequest(baseUrl, CL_EXPECT_FAILURE);
+});
+
+add_test(function testSyncCancel() {
+  onModifyListener(chan => {
+    chan.suspend();
+    chan.cancel(Cr.NS_BINDING_ABORTED);
+    Promise.resolve().then(() => {
+      chan.resume();
+    });
+  });
+  startChannelRequest(baseUrl, CL_EXPECT_FAILURE);
+});
+
+// Test request that will get redirected and cancelled asynchronously,
+// ensure no connection is made.
+add_test(function testAsyncCancelRedirect() {
+  onModifyListener(chan => {
+    // Suspend the channel then yield to make this async.
+    chan.suspend();
+    Promise.resolve().then(() => {
+      chan.cancel(Cr.NS_BINDING_ABORTED);
+      chan.redirectTo(ios.newURI(`${baseUrl}/fail`));
+      chan.resume();
+    });
+  });
+  startChannelRequest(baseUrl, CL_EXPECT_FAILURE);
+});
+
+// Test a request that will get cancelled synchronously, ensure async redirect
+// is not made.
+add_test(function testSyncCancelRedirect() {
+  onModifyListener(chan => {
+    chan.suspend();
+    chan.cancel(Cr.NS_BINDING_ABORTED);
+    Promise.resolve().then(() => {
+      chan.redirectTo(ios.newURI(`${baseUrl}/fail`));
+      chan.resume();
+    });
+  });
+  startChannelRequest(baseUrl, CL_EXPECT_FAILURE);
+});
+
+function run_test() {
+  var httpServer = new HttpServer();
+  httpServer.registerPathHandler("/", failResponseHandler);
+  httpServer.registerPathHandler("/fail", failResponseHandler);
+  httpServer.registerPathHandler("/success", successResponseHandler);
+  httpServer.start(-1);
+
+  baseUrl = `http://localhost:${httpServer.identity.primaryPort}`;
+
+  run_next_test();
+
+  registerCleanupFunction(function () {
+    httpServer.stop(() => {});
+  });
+}