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// Copyright 2017 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/ntp_snippets/logger.h"
#include "base/location.h"
#include "base/strings/string_number_conversions.h"
#include "components/ntp_snippets/features.h"
#include "components/variations/variations_params_manager.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ntp_snippets {
namespace {
const int kMaxItemsCount = 1000;
} // namespace
class LoggerTest : public ::testing::Test {
public:
LoggerTest() = default;
~LoggerTest() override = default;
void EnableFeature() {
params_manager_.SetVariationParamsWithFeatureAssociations(
kContentSuggestionsDebugLog.name,
{{"max_items_count", base::IntToString(kMaxItemsCount)}},
{kContentSuggestionsDebugLog.name});
}
private:
variations::testing::VariationParamsManager params_manager_;
};
TEST_F(LoggerTest, ShouldNotLogWhenNotEnabled) {
Logger logger;
logger.Log(FROM_HERE, /*message=*/"test");
EXPECT_EQ("", logger.GetHumanReadableLog());
}
TEST_F(LoggerTest, ShouldLogInRightOrder) {
EnableFeature();
Logger logger;
logger.Log(FROM_HERE, /*message=*/"first");
logger.Log(FROM_HERE, /*message=*/"second");
const std::string log = logger.GetHumanReadableLog();
ASSERT_NE(std::string::npos, log.find("first"));
ASSERT_NE(std::string::npos, log.find("second"));
EXPECT_LT(log.find("first"), log.find("second"));
}
TEST_F(LoggerTest, ShouldNotResetLogWhenDumping) {
EnableFeature();
Logger logger;
logger.Log(FROM_HERE, /*message=*/"first");
logger.Log(FROM_HERE, /*message=*/"second");
const std::string first_call = logger.GetHumanReadableLog();
const std::string second_call = logger.GetHumanReadableLog();
EXPECT_EQ(first_call, second_call);
}
TEST_F(LoggerTest, ShouldLimitLogItems) {
EnableFeature();
Logger logger;
logger.Log(FROM_HERE, /*message=*/"first_event");
for (int i = 0; i < kMaxItemsCount - 1; ++i) {
logger.Log(FROM_HERE, /*message=*/"other_event");
}
// The first event still should be in the log.
ASSERT_NE(std::string::npos,
logger.GetHumanReadableLog().find("first_event"));
logger.Log(FROM_HERE, /*message=*/"other_event");
// The first event should not be in the log anymore.
EXPECT_EQ(std::string::npos,
logger.GetHumanReadableLog().find("first_event"));
}
} // namespace ntp_snippets
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