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test_received_message_period.cpp
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test_received_message_period.cpp
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// Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <gtest/gtest.h>
#include <chrono>
#include <string>
#include <thread>
#include "moving_average_statistics/types.hpp"
#include "topic_statistics_collector/constants.hpp"
#include "topic_statistics_collector/received_message_period.hpp"
#include "rcl/time.h"
namespace
{
constexpr const std::chrono::seconds kDefaultDurationSeconds{1};
constexpr const int kDefaultMessage{42};
constexpr const double kExpectedAverageMilliseconds{1000.0};
constexpr const double kExpectedMinMilliseconds{1000.0};
constexpr const double kExpectedMaxMilliseconds{1000.0};
constexpr const double kExpectedStandardDeviation{0.0};
} // namespace
TEST(ReceivedMessagePeriodTest, TestPeriodMeasurement) {
topic_statistics_collector::ReceivedMessagePeriodCollector<int> test{};
EXPECT_FALSE(test.IsStarted()) << "Expected to be not started after constructed";
EXPECT_TRUE(test.Start()) << "Expected Start() to be successful";
EXPECT_TRUE(test.IsStarted()) << "Expected to be started";
rcl_time_point_value_t fake_now_nanos_{1};
test.OnMessageReceived(kDefaultMessage, fake_now_nanos_);
auto stats = test.GetStatisticsResults();
EXPECT_EQ(0, stats.sample_count) << "Expected 0 samples to be collected";
fake_now_nanos_ +=
std::chrono::duration_cast<std::chrono::nanoseconds>(kDefaultDurationSeconds).count();
test.OnMessageReceived(kDefaultMessage, fake_now_nanos_);
stats = test.GetStatisticsResults();
EXPECT_EQ(1, stats.sample_count) << "Expected 1 sample to be collected";
fake_now_nanos_ +=
std::chrono::duration_cast<std::chrono::nanoseconds>(kDefaultDurationSeconds).count();
test.OnMessageReceived(kDefaultMessage, fake_now_nanos_);
stats = test.GetStatisticsResults();
EXPECT_EQ(2, stats.sample_count) << "Expected 2 samples to be collected";
fake_now_nanos_ +=
std::chrono::duration_cast<std::chrono::nanoseconds>(kDefaultDurationSeconds).count();
test.OnMessageReceived(kDefaultMessage, fake_now_nanos_);
stats = test.GetStatisticsResults();
EXPECT_EQ(3, stats.sample_count);
EXPECT_EQ(kExpectedAverageMilliseconds, stats.average);
EXPECT_EQ(kExpectedMinMilliseconds, stats.min);
EXPECT_EQ(kExpectedMaxMilliseconds, stats.max);
EXPECT_EQ(kExpectedStandardDeviation, stats.standard_deviation);
}
TEST(ReceivedMessagePeriodTest, TestGetStatNameAndUnit) {
topic_statistics_collector::ReceivedMessagePeriodCollector<int> test{};
EXPECT_FALSE(test.GetMetricName().empty());
EXPECT_FALSE(test.GetMetricUnit().empty());
}