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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/data_sharing/internal/logger_impl.h"
#include "base/command_line.h"
#include "base/time/time.h"
#include "components/data_sharing/public/logger_common.mojom.h"
#include "components/data_sharing/public/switches.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::_;
namespace data_sharing {
namespace {
class MockObserver : public Logger::Observer {
public:
MockObserver() = default;
~MockObserver() override = default;
MOCK_METHOD(void, OnNewLog, (const Logger::Entry& entry), (override));
};
class DataSharingLoggerImplTest : public testing::Test {
public:
DataSharingLoggerImplTest() = default;
~DataSharingLoggerImplTest() override = default;
void TearDown() override {
base::CommandLine::ForCurrentProcess()->RemoveSwitch(
data_sharing::kDataSharingDebugLoggingEnabled);
}
};
TEST_F(DataSharingLoggerImplTest, DisabledWithoutObserver) {
LoggerImpl logger;
MockObserver observer;
Logger::Entry entry1(base::Time::Now(),
logger_common::mojom::LogSource::Unknown, "fake_file.cc",
123, "fake message");
Logger::Entry entry2(base::Time::Now(),
logger_common::mojom::LogSource::Unknown,
"fake_file2.cc", 124, "fake message2");
Logger::Entry entry3(base::Time::Now(),
logger_common::mojom::LogSource::Unknown,
"fake_file3.cc", 125, "fake message3");
EXPECT_FALSE(logger.ShouldEnableDebugLogs());
EXPECT_CALL(observer, OnNewLog(_)).Times(0);
logger.Log(entry1.event_time, entry1.log_source, entry1.source_file,
entry1.source_line, entry1.message);
logger.AddObserver(&observer);
EXPECT_TRUE(logger.ShouldEnableDebugLogs());
EXPECT_CALL(observer, OnNewLog(entry2)).Times(1);
logger.Log(entry2.event_time, entry2.log_source, entry2.source_file,
entry2.source_line, entry2.message);
logger.RemoveObserver(&observer);
EXPECT_FALSE(logger.ShouldEnableDebugLogs());
EXPECT_CALL(observer, OnNewLog(_)).Times(0);
logger.Log(entry3.event_time, entry3.log_source, entry3.source_file,
entry3.source_line, entry3.message);
logger.AddObserver(&observer);
}
TEST_F(DataSharingLoggerImplTest, CommandLineAlwaysLogs) {
MockObserver observer1;
MockObserver observer2;
MockObserver observer3;
base::CommandLine::ForCurrentProcess()->AppendSwitch(
data_sharing::kDataSharingDebugLoggingEnabled);
std::unique_ptr<Logger> logger = std::make_unique<LoggerImpl>();
EXPECT_TRUE(logger->ShouldEnableDebugLogs());
Logger::Entry entry1(base::Time::Now(),
logger_common::mojom::LogSource::Unknown, "fake_file.cc",
123, "fake message");
Logger::Entry entry2(base::Time::Now(),
logger_common::mojom::LogSource::Unknown,
"fake_file2.cc", 124, "fake message2");
Logger::Entry entry3(base::Time::Now(),
logger_common::mojom::LogSource::Unknown,
"fake_file3.cc", 125, "fake message3");
EXPECT_CALL(observer1, OnNewLog(_)).Times(0);
EXPECT_CALL(observer2, OnNewLog(_)).Times(0);
EXPECT_CALL(observer3, OnNewLog(_)).Times(0);
logger->Log(entry1.event_time, entry1.log_source, entry1.source_file,
entry1.source_line, entry1.message);
logger->Log(entry2.event_time, entry2.log_source, entry2.source_file,
entry2.source_line, entry2.message);
EXPECT_CALL(observer1, OnNewLog(entry1)).Times(1);
EXPECT_CALL(observer1, OnNewLog(entry2)).Times(1);
EXPECT_CALL(observer1, OnNewLog(entry3)).Times(0);
EXPECT_CALL(observer2, OnNewLog(_)).Times(0);
EXPECT_CALL(observer3, OnNewLog(_)).Times(0);
logger->AddObserver(&observer1);
EXPECT_CALL(observer1, OnNewLog(entry3)).Times(1);
EXPECT_CALL(observer2, OnNewLog(_)).Times(0);
logger->Log(entry3.event_time, entry3.log_source, entry3.source_file,
entry3.source_line, entry3.message);
EXPECT_CALL(observer1, OnNewLog(_)).Times(0);
EXPECT_CALL(observer2, OnNewLog(entry1)).Times(1);
EXPECT_CALL(observer2, OnNewLog(entry2)).Times(1);
EXPECT_CALL(observer2, OnNewLog(entry3)).Times(1);
EXPECT_CALL(observer3, OnNewLog(_)).Times(0);
logger->AddObserver(&observer2);
EXPECT_CALL(observer1, OnNewLog(_)).Times(0);
EXPECT_CALL(observer2, OnNewLog(_)).Times(0);
EXPECT_CALL(observer3, OnNewLog(entry1)).Times(1);
EXPECT_CALL(observer3, OnNewLog(entry2)).Times(1);
EXPECT_CALL(observer3, OnNewLog(entry3)).Times(1);
logger->RemoveObserver(&observer1);
logger->AddObserver(&observer3);
}
} // namespace
} // namespace data_sharing
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