Offline pages using NQE 2G Slow

chrome/browser/android/offline_pages/offline_page_tab_helper_unittest.cc

 // Copyright 2016 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 "chrome/browser/android/offline_pages/offline_page_tab_helper.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/feature_list.h"
 #include "base/files/file_path.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
+#include "base/metrics/field_trial.h"
 #include "base/run_loop.h"
 #include "base/test/histogram_tester.h"
+#include "base/test/simple_test_clock.h"
+#include "base/time/clock.h"
+#include "base/time/time.h"
 #include "chrome/browser/android/offline_pages/offline_page_model_factory.h"
 #include "chrome/browser/android/offline_pages/offline_page_utils.h"
 #include "chrome/browser/android/offline_pages/test_offline_page_model_builder.h"
+#include "chrome/browser/net/nqe/ui_network_quality_estimator_service.h"
+#include "chrome/browser/net/nqe/ui_network_quality_estimator_service_factory.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
+#include "chrome/test/base/testing_profile.h"
 #include "components/offline_pages/client_namespace_constants.h"
 #include "components/offline_pages/offline_page_feature.h"
 #include "components/offline_pages/offline_page_item.h"
 #include "components/offline_pages/offline_page_model.h"
 #include "components/offline_pages/offline_page_test_archiver.h"
 #include "components/offline_pages/offline_page_types.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/web_contents.h"
 #include "net/base/net_errors.h"
 #include "net/base/network_change_notifier.h"
+#include "net/nqe/network_quality_estimator.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace offline_pages {
 
 namespace {
 
 const GURL kTestPageUrl("http://test.org/page1");
 const ClientId kTestClientId = ClientId(kBookmarkNamespace, "1234");
 const int64_t kTestFileSize = 876543LL;
 const char kRedirectResultHistogram[] = "OfflinePages.RedirectResult";
@@ skipping 304 matching lines @@
   RunUntilIdle();
 
   const OfflinePageItem* item =
       OfflinePageUtils::GetOfflinePageFromWebContents(web_contents());
   EXPECT_EQ(expected_offline_id, item->offline_id);
   EXPECT_EQ(expected_offline_url, item->GetOfflineURL());
   EXPECT_EQ(kLastNNamespace, item->client_id.name_space);
   EXPECT_EQ(kTabId, item->client_id.id);
 }
 
+TEST_F(OfflinePageTabHelperTest, PageFor2GSlow) {
+  SimulateHasNetworkConnectivity(true);
+  TestingProfile* test_profile = profile();
+  UINetworkQualityEstimatorService* nqe_service =
+      UINetworkQualityEstimatorServiceFactory::GetForProfile(test_profile);
+  nqe_service->SetEffectiveConnectionTypeForTest(
+      net::NetworkQualityEstimator::EFFECTIVE_CONNECTION_TYPE_SLOW_2G);
+
+  base::SimpleTestClock* clock = new base::SimpleTestClock();
+  clock->SetNow(base::Time::Now());
+  offline_page_tab_helper()->SetClockForTesting(base::WrapUnique(clock));
+
+  StartLoad(kTestPageUrl);
+  // Gives a chance to run delayed task to do redirection.
+  RunUntilIdle();
+
+  // This is not included in the field trial, so it should not cause a redirect.
+  const OfflinePageItem* item =
+      OfflinePageUtils::GetOfflinePageFromWebContents(web_contents());
+  EXPECT_EQ(nullptr, item);
+
+  // Enable the field trial for using 2G slow.
+  base::FieldTrialList field_trial_list(nullptr);
+  ASSERT_TRUE(base::FieldTrialList::CreateFieldTrial(
+      "DataReductionProxyClientSideExperimentsFieldTrial",
+      "EnabledOfflinePages"));
+
+  StartLoad(kTestPageUrl);
+  // Gives a chance to run delayed task to do redirection.
+  RunUntilIdle();
+
+  // This page should be fresh enough to cause a redirect.
+  item = OfflinePageUtils::GetOfflinePageFromWebContents(web_contents());
+  EXPECT_EQ(offline_url(), item->GetOfflineURL());
+  EXPECT_EQ(online_url(), item->url);
+
+  clock->Advance(base::TimeDelta::FromDays(2));
+  StartLoad(kTestPageUrl);
+  // Gives a chance to run delayed task to do redirection.
+  RunUntilIdle();
+
+  // This page should not be fresh enough to cause a redirect.
+  item = OfflinePageUtils::GetOfflinePageFromWebContents(web_contents());
+  EXPECT_EQ(nullptr, item);
+}
+
 // This test saves another copy of page from Async Loading namespace
 // and verifies it is redirected to it (as it is more recent).
 TEST_F(OfflinePageTabHelperTest, SwitchToOfflineAsyncLoadedPageOnNoNetwork) {
   // Saves an offline page.
   OfflinePageModel* model =
       OfflinePageModelFactory::GetForBrowserContext(browser_context());
   std::unique_ptr<OfflinePageTestArchiver> archiver(BuildArchiver(
       kTestPageUrl,
       base::FilePath(FILE_PATH_LITERAL("AsyncLoadedPage.mhtml"))));
 
@@ skipping 12 matching lines @@
   RunUntilIdle();
 
   const OfflinePageItem* item =
       OfflinePageUtils::GetOfflinePageFromWebContents(web_contents());
   EXPECT_EQ(expected_offline_id, item->offline_id);
   EXPECT_EQ(expected_offline_url, item->GetOfflineURL());
   EXPECT_EQ(kAsyncNamespace, item->client_id.name_space);
 }
 
 }  // namespace offline_pages