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// Copyright (c) 2012 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 <ctype.h>
#include <string>
#include "base/command_line.h"
#include "base/message_loop/message_loop.h"
#include "chrome/browser/metrics/metrics_service.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "chrome/test/base/scoped_testing_local_state.h"
#include "chrome/test/base/testing_browser_process.h"
#include "content/public/common/process_type.h"
#include "content/public/test/test_browser_thread.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
class MetricsServiceTest : public testing::Test {
public:
MetricsServiceTest()
: ui_thread_(content::BrowserThread::UI, &message_loop_),
testing_local_state_(TestingBrowserProcess::GetGlobal()) {
}
PrefService* GetLocalState() {
return testing_local_state_.Get();
}
private:
base::MessageLoopForUI message_loop_;
content::TestBrowserThread ui_thread_;
ScopedTestingLocalState testing_local_state_;
DISALLOW_COPY_AND_ASSIGN(MetricsServiceTest);
};
} // namespace
// Ensure the ClientId is formatted as expected.
TEST_F(MetricsServiceTest, ClientIdCorrectlyFormatted) {
std::string clientid = MetricsService::GenerateClientID();
EXPECT_EQ(36U, clientid.length());
for (size_t i = 0; i < clientid.length(); ++i) {
char current = clientid[i];
if (i == 8 || i == 13 || i == 18 || i == 23)
EXPECT_EQ('-', current);
else
EXPECT_TRUE(isxdigit(current));
}
}
TEST_F(MetricsServiceTest, IsPluginProcess) {
EXPECT_TRUE(
MetricsService::IsPluginProcess(content::PROCESS_TYPE_PLUGIN));
EXPECT_TRUE(
MetricsService::IsPluginProcess(content::PROCESS_TYPE_PPAPI_PLUGIN));
EXPECT_FALSE(
MetricsService::IsPluginProcess(content::PROCESS_TYPE_GPU));
}
TEST_F(MetricsServiceTest, LowEntropySource0NotReset) {
MetricsService service;
// Get the low entropy source once, to initialize it.
service.GetLowEntropySource();
// Now, set it to 0 and ensure it doesn't get reset.
service.low_entropy_source_ = 0;
EXPECT_EQ(0, service.GetLowEntropySource());
// Call it another time, just to make sure.
EXPECT_EQ(0, service.GetLowEntropySource());
}
TEST_F(MetricsServiceTest, PermutedEntropyCacheClearedWhenLowEntropyReset) {
const PrefService::Preference* low_entropy_pref =
GetLocalState()->FindPreference(prefs::kMetricsLowEntropySource);
const char* kCachePrefName = prefs::kMetricsPermutedEntropyCache;
int low_entropy_value = -1;
// First, generate an initial low entropy source value.
{
EXPECT_TRUE(low_entropy_pref->IsDefaultValue());
MetricsService service;
service.GetLowEntropySource();
EXPECT_FALSE(low_entropy_pref->IsDefaultValue());
EXPECT_TRUE(low_entropy_pref->GetValue()->GetAsInteger(&low_entropy_value));
}
// Now, set a dummy value in the permuted entropy cache pref and verify that
// another call to GetLowEntropySource() doesn't clobber it when
// --reset-variation-state wasn't specified.
{
GetLocalState()->SetString(kCachePrefName, "test");
MetricsService service;
service.GetLowEntropySource();
EXPECT_EQ("test", GetLocalState()->GetString(kCachePrefName));
EXPECT_EQ(low_entropy_value,
GetLocalState()->GetInteger(prefs::kMetricsLowEntropySource));
}
// Verify that the cache does get reset if --reset-variations-state is passed.
{
CommandLine::ForCurrentProcess()->AppendSwitch(
switches::kResetVariationState);
MetricsService service;
service.GetLowEntropySource();
EXPECT_TRUE(GetLocalState()->GetString(kCachePrefName).empty());
}
}
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