Disallow showing offline previews on a reload.

components/previews/core/previews_io_data_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 "components/previews/core/previews_io_data.h"
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/field_trial.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/test/histogram_tester.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "components/previews/core/previews_black_list.h"
 #include "components/previews/core/previews_black_list_item.h"
 #include "components/previews/core/previews_opt_out_store.h"
 #include "components/previews/core/previews_ui_service.h"
 #include "components/variations/variations_associated_data.h"
+#include "net/base/load_flags.h"
 #include "net/nqe/effective_connection_type.h"
 #include "net/nqe/network_quality_estimator_test_util.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace previews {
 
 namespace {
@@ skipping 167 matching lines @@
       net::EFFECTIVE_CONNECTION_TYPE_2G);
   EXPECT_FALSE(io_data()->ShouldAllowPreview(*request, PreviewsType::OFFLINE));
   histogram_tester.ExpectBucketCount(
       "Previews.EligibilityReason.Offline",
       static_cast<int>(PreviewsEligibilityReason::NETWORK_NOT_SLOW), 1);
 
   // Set NQE type to slow.
   network_quality_estimator.set_effective_connection_type(
       net::EFFECTIVE_CONNECTION_TYPE_SLOW_2G);
 
+  request->SetLoadFlags(net::LOAD_BYPASS_CACHE);
+  EXPECT_FALSE(io_data()->ShouldAllowPreview(*request, PreviewsType::OFFLINE));
+  histogram_tester.ExpectBucketCount(
+      "Previews.EligibilityReason.Offline",
+      static_cast<int>(
+          PreviewsEligibilityReason::RELOAD_DISALLOWED_FOR_OFFLINE),
+      1);
+
+  request->SetLoadFlags(0);
   EXPECT_TRUE(io_data()->ShouldAllowPreview(*request, PreviewsType::OFFLINE));
   histogram_tester.ExpectBucketCount(
       "Previews.EligibilityReason.Offline",
       static_cast<int>(PreviewsEligibilityReason::ALLOWED), 1);
 
-  histogram_tester.ExpectTotalCount("Previews.EligibilityReason.Offline", 6);
+  histogram_tester.ExpectTotalCount("Previews.EligibilityReason.Offline", 7);
 
   variations::testing::ClearAllVariationParams();
 }
 
 }  // namespace previews