Display DNS probe results.

chrome/browser/net/dns_probe_browsertest.cc

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/bind.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
+#include "base/path_service.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/google/google_util.h"
+#include "chrome/browser/io_thread.h"
+#include "chrome/browser/net/dns_probe_test_util.h"
+#include "chrome/browser/net/net_error_tab_helper.h"
+#include "chrome/browser/net/url_request_mock_util.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/common/chrome_paths.h"
+#include "chrome/common/net/net_error_info.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/test/browser_test_utils.h"
+#include "content/test/net/url_request_failed_job.h"
+#include "content/test/net/url_request_mock_http_job.h"
+#include "net/base/net_errors.h"
+#include "net/dns/dns_test_util.h"
+#include "net/url_request/url_request_filter.h"
+#include "net/url_request/url_request_job.h"
+#include "net/url_request/url_request_job_factory.h"
+
+using base::Bind;
+using base::Callback;
+using base::Closure;
+using base::ConstRef;
+using base::FilePath;
+using base::Unretained;
+using chrome_common_net::DnsProbeStatus;
+using content::BrowserThread;
+using content::URLRequestFailedJob;
+using content::URLRequestMockHTTPJob;
+using content::WebContents;
+using google_util::LinkDoctorBaseURL;
+using net::MockDnsClientRule;
+using net::NetworkDelegate;
+using net::URLRequest;
+using net::URLRequestFilter;
+using net::URLRequestJob;
+using net::URLRequestJobFactory;
+using ui_test_utils::NavigateToURL;
+using ui_test_utils::NavigateToURLBlockUntilNavigationsComplete;
+
+namespace chrome_browser_net {
+
+namespace {
+
+class BrokenLinkDoctorProtocolHandlerDelegate {
+ public:
+  virtual int link_doctor_net_error() const = 0;
+};
+
+class BrokenLinkDoctorProtocolHandler
+    : public URLRequestJobFactory::ProtocolHandler {
+ public:
+  explicit BrokenLinkDoctorProtocolHandler(
+      BrokenLinkDoctorProtocolHandlerDelegate* delegate)
+      : delegate_(delegate) {}
+
+  virtual URLRequestJob* MaybeCreateJob(
+      URLRequest* request, NetworkDelegate* network_delegate) const OVERRIDE {
+    int net_error = delegate_->link_doctor_net_error();
+    if (net_error != net::OK) {
+      return new URLRequestFailedJob(request, network_delegate, net_error);
+    } else {
+      FilePath file_path = GetMockLinkDoctorFilePath();
+      return new URLRequestMockHTTPJob(request, network_delegate, file_path);
+    }
+  }
+
+ private:
+  FilePath GetMockLinkDoctorFilePath() const {
+    FilePath root_http;
+    PathService::Get(chrome::DIR_TEST_DATA, &root_http);
+    return root_http.AppendASCII("mock-link-doctor.html");
+  }
+
+  const BrokenLinkDoctorProtocolHandlerDelegate* delegate_;
+};
+
+class DnsProbeBrowserTestIOThreadHelper
+    : public BrokenLinkDoctorProtocolHandlerDelegate {
+ public:
+  DnsProbeBrowserTestIOThreadHelper()
+      : io_thread_(NULL),
+        link_doctor_net_error_(net::OK) {
+  }
+
+  virtual ~DnsProbeBrowserTestIOThreadHelper() {}
+
+  void SetUpOnIOThread(IOThread* io_thread);
+  void CleanUpOnIOThreadAndDeleteHelper();
+
+  void SetRules(MockDnsClientRule::Result system_good_result,
+                MockDnsClientRule::Result public_good_result);
+
+  virtual int link_doctor_net_error() const OVERRIDE {
+    return link_doctor_net_error_;
+  }
+  void set_link_doctor_net_error(int link_doctor_net_error) {
+    link_doctor_net_error_ = link_doctor_net_error;
+  }
+
+ private:
+  IOThread* io_thread_;
+  int link_doctor_net_error_;
+};
+
+void DnsProbeBrowserTestIOThreadHelper::SetUpOnIOThread(
+    IOThread* io_thread) {
+  DCHECK(io_thread);
+  DCHECK(!io_thread_);
+
+  io_thread_ = io_thread;
+
+  // SetUrlRequestMocksEnabled clears the filter list and then adds filters
+  // for several things, including the mock link doctor.  So, we call it
+  // first, then remove the handler it's added for the mock link doctor and
+  // add our own.
+  SetUrlRequestMocksEnabled(true);
+
+  URLRequestFilter* filter = URLRequestFilter::GetInstance();
+  const GURL link_doctor_base_url = LinkDoctorBaseURL();
+  const std::string host = link_doctor_base_url.host();
+  scoped_ptr<URLRequestJobFactory::ProtocolHandler> handler(
+      new BrokenLinkDoctorProtocolHandler(this));
+  filter->RemoveHostnameHandler("http", host);
+  filter->AddHostnameProtocolHandler("http", host, handler.Pass());
+}
+
+void DnsProbeBrowserTestIOThreadHelper::CleanUpOnIOThreadAndDeleteHelper() {
+  DCHECK(io_thread_);
+
+  SetUrlRequestMocksEnabled(false);
+  io_thread_ = NULL;
+
+  delete this;
+}
+
+void DnsProbeBrowserTestIOThreadHelper::SetRules(
+    MockDnsClientRule::Result system_good_result,
+    MockDnsClientRule::Result public_good_result) {
+  DnsProbeService* service = io_thread_->globals()->dns_probe_service.get();
+  service->SetSystemClientForTesting(
+      CreateMockDnsClientForProbes(system_good_result));
+  service->SetPublicClientForTesting(
+      CreateMockDnsClientForProbes(public_good_result));
+}
+
+class DnsProbeBrowserTest : public InProcessBrowserTest {
+ public:
+  DnsProbeBrowserTest();
+
+  virtual void SetUpOnMainThread() OVERRIDE;
+  virtual void CleanUpOnMainThread() OVERRIDE;
+
+ protected:
+  void SetLinkDoctorBroken(bool broken);
+  void SetRules(MockDnsClientRule::Result system_good_result,
+                MockDnsClientRule::Result public_good_result);
+  void NavigateToDnsError();
+  void NavigateToOtherError();
+
+  bool TitleContains(const std::string& expected);
+  bool PageContains(const std::string& expected);
+
+ private:
+  void SetLinkDoctorNetError(int net_error);
+  void OnProbeStarted();
+
+  DnsProbeBrowserTestIOThreadHelper* helper_;
+};
+
+DnsProbeBrowserTest::DnsProbeBrowserTest()
+    : helper_(new DnsProbeBrowserTestIOThreadHelper()) {}
+
+void DnsProbeBrowserTest::SetUpOnMainThread() {
+  NetErrorTabHelper::set_state_for_testing(
+      NetErrorTabHelper::TESTING_FORCE_ENABLED);
+
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      Bind(&DnsProbeBrowserTestIOThreadHelper::SetUpOnIOThread,
+           Unretained(helper_),
+           g_browser_process->io_thread()));
+}
+
+void DnsProbeBrowserTest::CleanUpOnMainThread() {
+  NetErrorTabHelper::set_state_for_testing(
+      NetErrorTabHelper::TESTING_DEFAULT);
+
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      Bind(&DnsProbeBrowserTestIOThreadHelper::CleanUpOnIOThreadAndDeleteHelper,
+           Unretained(helper_)));
+}
+
+void DnsProbeBrowserTest::SetLinkDoctorBroken(bool broken) {
+  SetLinkDoctorNetError(broken ? net::ERR_NAME_NOT_RESOLVED : net::OK);
+}
+
+// These two functions wait for two navigations because Link Doctor loads two
+// pages: a blank page, so the user stops seeing the previous page, and then
+// either the Link Doctor page or a regular error page.  We want to wait for
+// the error page, so we wait for both loads to finish.
+
+void DnsProbeBrowserTest::NavigateToDnsError() {
+  NavigateToURLBlockUntilNavigationsComplete(
+      browser(),
+      URLRequestFailedJob::GetMockHttpUrl(net::ERR_NAME_NOT_RESOLVED),
+      2);
+}
+
+void DnsProbeBrowserTest::NavigateToOtherError() {
+  NavigateToURLBlockUntilNavigationsComplete(
+      browser(),
+      URLRequestFailedJob::GetMockHttpUrl(net::ERR_CONNECTION_REFUSED),
+      2);
+}
+
+void DnsProbeBrowserTest::SetRules(
+    MockDnsClientRule::Result system_good_result,
+    MockDnsClientRule::Result public_good_result) {
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      Bind(&DnsProbeBrowserTestIOThreadHelper::SetRules,
+           Unretained(helper_),
+           system_good_result,
+           public_good_result));
+}
+
+bool DnsProbeBrowserTest::TitleContains(const std::string& expected) {
+  std::string title;
+
+  WebContents* contents =
+      browser()->tab_strip_model()->GetActiveWebContents();
+
+  bool rv = content::ExecuteScriptAndExtractString(
+      contents,
+      "domAutomationController.send(document.title);",
+      &title);
+  if (!rv)
+    return false;
+
+  return title.find(expected) != std::string::npos;
+}
+
+bool DnsProbeBrowserTest::PageContains(const std::string& expected) {
+  std::string text_content;
+
+  bool rv = content::ExecuteScriptAndExtractString(
+      browser()->tab_strip_model()->GetActiveWebContents(),
+      "domAutomationController.send(document.body.textContent);",
+      &text_content);
+  if (!rv)
+    return false;
+
+  return text_content.find(expected) != std::string::npos;
+}
+
+void DnsProbeBrowserTest::SetLinkDoctorNetError(int net_error) {
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      Bind(&DnsProbeBrowserTestIOThreadHelper::set_link_doctor_net_error,
+           Unretained(helper_),
+           net_error));
+}
+
+IN_PROC_BROWSER_TEST_F(DnsProbeBrowserTest, OtherErrorWithLinkDoctor) {
+  SetLinkDoctorBroken(false);
+
+  NavigateToOtherError();
+  EXPECT_TRUE(TitleContains("Mock Link Doctor"));
+}
+
+IN_PROC_BROWSER_TEST_F(DnsProbeBrowserTest, OtherErrorWithoutLinkDoctor) {
+  SetLinkDoctorBroken(true);
+
+  NavigateToOtherError();
+  EXPECT_TRUE(PageContains("CONNECTION_REFUSED"));
+}
+
+IN_PROC_BROWSER_TEST_F(DnsProbeBrowserTest, NxdomainWithLinkDoctor) {
+  SetLinkDoctorBroken(false);
+  SetRules(MockDnsClientRule::OK, MockDnsClientRule::OK);
+
+  NavigateToDnsError();
+  EXPECT_TRUE(TitleContains("Mock Link Doctor"));
+}
+
+IN_PROC_BROWSER_TEST_F(DnsProbeBrowserTest, NoInternetWithoutLinkDoctor) {
+  SetLinkDoctorBroken(true);
+  SetRules(MockDnsClientRule::TIMEOUT, MockDnsClientRule::TIMEOUT);
+
+  NavigateToDnsError();
+  // EXPECT_TRUE(PageContains("DNS_PROBE_STARTED"));
+  EXPECT_TRUE(PageContains("DNS_PROBE_FINISHED_NO_INTERNET"));
+}
+
+/* static const FilePath::CharType kIframeDnsErrorHtmlName[] =
+    FILE_PATH_LITERAL("iframe_dns_error.html");
+
+IN_PROC_BROWSER_TEST_F(DnsProbeBrowserTest, NoProbeInSubframe) {
+  SetLinkDoctorBroken(false);
+
+  NavigateToURL(
+      browser(),
+      URLRequestMockHTTPJob::GetMockUrl(FilePath(kIframeDnsErrorHtmlName)));
+  EXPECT_EQ(0, probe_count());
+} */
+
+}  // namespace
+
+}  // namespace chrome_browser_net