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// Copyright 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/base_switches.h"
#include "base/command_line.h"
#include "base/prefs/pref_service.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/net/prediction_options.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/common/pref_names.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "chrome/test/base/ui_test_utils.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/browser_test_utils.h"
#include "net/base/network_change_notifier.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
using chrome_browser_net::NetworkPredictionOptions;
using net::NetworkChangeNotifier;
namespace {
const char kPrefetchPage[] = "/prerender/simple_prefetch.html";
class MockNetworkChangeNotifierWIFI : public NetworkChangeNotifier {
public:
ConnectionType GetCurrentConnectionType() const override {
return NetworkChangeNotifier::CONNECTION_WIFI;
}
};
class MockNetworkChangeNotifier4G : public NetworkChangeNotifier {
public:
ConnectionType GetCurrentConnectionType() const override {
return NetworkChangeNotifier::CONNECTION_4G;
}
};
class PrefetchBrowserTestBase : public InProcessBrowserTest {
public:
explicit PrefetchBrowserTestBase(bool disabled_via_field_trial)
: disabled_via_field_trial_(disabled_via_field_trial) {}
void SetUpCommandLine(base::CommandLine* command_line) override {
if (disabled_via_field_trial_) {
command_line->AppendSwitchASCII(switches::kForceFieldTrials,
"Prefetch/ExperimentDisabled/");
}
}
void SetUpOnMainThread() override {
ASSERT_TRUE(embedded_test_server()->Start());
InProcessBrowserTest::SetUpOnMainThread();
}
void SetPreference(NetworkPredictionOptions value) {
browser()->profile()->GetPrefs()->SetInteger(
prefs::kNetworkPredictionOptions, value);
}
bool RunPrefetchExperiment(bool expect_success, Browser* browser) {
GURL url = embedded_test_server()->GetURL(kPrefetchPage);
const base::string16 expected_title =
expect_success ? base::ASCIIToUTF16("link onload")
: base::ASCIIToUTF16("link onerror");
content::TitleWatcher title_watcher(
browser->tab_strip_model()->GetActiveWebContents(), expected_title);
ui_test_utils::NavigateToURL(browser, url);
return expected_title == title_watcher.WaitAndGetTitle();
}
private:
bool disabled_via_field_trial_;
};
class PrefetchBrowserTestPrediction : public PrefetchBrowserTestBase {
public:
PrefetchBrowserTestPrediction() : PrefetchBrowserTestBase(false) {}
};
class PrefetchBrowserTestPredictionDisabled : public PrefetchBrowserTestBase {
public:
PrefetchBrowserTestPredictionDisabled() : PrefetchBrowserTestBase(true) {}
};
// Prefetch is disabled via field experiment. Prefetch should be dropped.
IN_PROC_BROWSER_TEST_F(PrefetchBrowserTestPredictionDisabled,
ExperimentDisabled) {
EXPECT_TRUE(RunPrefetchExperiment(false, browser()));
// Should not prefetch even if preference is ALWAYS.
SetPreference(NetworkPredictionOptions::NETWORK_PREDICTION_ALWAYS);
EXPECT_TRUE(RunPrefetchExperiment(false, browser()));
}
// Prefetch should be allowed depending on preference and network type.
IN_PROC_BROWSER_TEST_F(PrefetchBrowserTestPrediction, PreferenceWorks) {
// Set real NetworkChangeNotifier singleton aside.
scoped_ptr<NetworkChangeNotifier::DisableForTest> disable_for_test(
new NetworkChangeNotifier::DisableForTest);
// Preference defaults to WIFI_ONLY: prefetch when not on cellular.
{
scoped_ptr<NetworkChangeNotifier> mock(new MockNetworkChangeNotifierWIFI);
EXPECT_TRUE(RunPrefetchExperiment(true, browser()));
}
{
scoped_ptr<NetworkChangeNotifier> mock(new MockNetworkChangeNotifier4G);
EXPECT_TRUE(RunPrefetchExperiment(false, browser()));
}
// Set preference to ALWAYS: always prefetch.
SetPreference(NetworkPredictionOptions::NETWORK_PREDICTION_ALWAYS);
{
scoped_ptr<NetworkChangeNotifier> mock(new MockNetworkChangeNotifierWIFI);
EXPECT_TRUE(RunPrefetchExperiment(true, browser()));
}
{
scoped_ptr<NetworkChangeNotifier> mock(new MockNetworkChangeNotifier4G);
EXPECT_TRUE(RunPrefetchExperiment(true, browser()));
}
// Set preference to NEVER: never prefetch.
SetPreference(NetworkPredictionOptions::NETWORK_PREDICTION_NEVER);
{
scoped_ptr<NetworkChangeNotifier> mock(new MockNetworkChangeNotifierWIFI);
EXPECT_TRUE(RunPrefetchExperiment(false, browser()));
}
{
scoped_ptr<NetworkChangeNotifier> mock(new MockNetworkChangeNotifier4G);
EXPECT_TRUE(RunPrefetchExperiment(false, browser()));
}
}
// Bug 339909: When in incognito mode the browser crashed due to an
// uninitialized preference member. Verify that it no longer does.
IN_PROC_BROWSER_TEST_F(PrefetchBrowserTestPrediction, IncognitoTest) {
Profile* incognito_profile = browser()->profile()->GetOffTheRecordProfile();
Browser* incognito_browser = new Browser(
Browser::CreateParams(incognito_profile, browser()->host_desktop_type()));
// Navigate just to have a tab in this window, otherwise there is no
// WebContents for the incognito browser.
OpenURLOffTheRecord(browser()->profile(), GURL("about:blank"));
EXPECT_TRUE(RunPrefetchExperiment(true, incognito_browser));
}
} // namespace
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