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#include "usage_stats/usage_stats_uploader.h"

#include <algorithm>
#include <cstdint>
#include <map>
#include <string>
#include <utility>
#include <vector>

#include "base/port.h"
#include "base/system_util.h"
#include "base/version.h"
#include "storage/registry.h"
#include "testing/base/public/googletest.h"
#include "testing/base/public/gunit.h"
#include "usage_stats/usage_stats.h"
#include "absl/flags/flag.h"

namespace mozc {
namespace usage_stats {
namespace {

void SetUpMetaDataWithMozcVersion(uint32_t last_upload_time,
                                  const std::string &mozc_version) {
  EXPECT_TRUE(
      storage::Registry::Insert("usage_stats.last_upload", last_upload_time));
  EXPECT_TRUE(
      storage::Registry::Insert("usage_stats.mozc_version", mozc_version));
}

void SetUpMetaData(uint32_t last_upload_time) {
  SetUpMetaDataWithMozcVersion(last_upload_time, Version::GetMozcVersion());
}

class UsageStatsUploaderTest : public ::testing::Test {
 protected:
  void SetUp() override {
    SystemUtil::SetUserProfileDirectory(absl::GetFlag(FLAGS_test_tmpdir));
    EXPECT_TRUE(storage::Registry::Clear());
  }

  void TearDown() override { EXPECT_TRUE(storage::Registry::Clear()); }
};

TEST_F(UsageStatsUploaderTest, SendTest) {
  SetUpMetaData(100000);

  EXPECT_TRUE(UsageStatsUploader::Send(nullptr));

  // Metadata should be deleted
  uint32_t recorded_sec;
  std::string recorded_version;
  EXPECT_FALSE(
      storage::Registry::Lookup("usage_stats.last_upload", &recorded_sec));
  EXPECT_FALSE(
      storage::Registry::Lookup("usage_stats.mozc_version", &recorded_version));
}

TEST_F(UsageStatsUploaderTest, SendTest_DeleteExistingClientId) {
  const std::string store_value = "some_value";
  storage::Registry::Insert("usage_stats.client_id", store_value);
  std::string client_id;
  EXPECT_TRUE(storage::Registry::Lookup("usage_stats.client_id", &client_id));
  EXPECT_EQ("some_value", client_id);

  EXPECT_TRUE(UsageStatsUploader::Send(nullptr));

  // Metadata should be deleted
  EXPECT_FALSE(storage::Registry::Lookup("usage_stats.client_id", &client_id));
}

}  // namespace
}  // namespace usage_stats
}  // namespace mozc
