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#include "testing/testing.hpp"
#include "coding/traffic.hpp"
#include "geometry/mercator.hpp"
#include "geometry/point2d.hpp"
#include "base/logging.hpp"
#include "base/math.hpp"
namespace coding
{
double CalculateLength(vector<TrafficGPSEncoder::DataPoint> const & path)
{
double res = 0;
for (size_t i = 1; i < path.size(); ++i)
{
auto p1 = MercatorBounds::FromLatLon(path[i - 1].m_latLon.lat, path[i - 1].m_latLon.lon);
auto p2 = MercatorBounds::FromLatLon(path[i].m_latLon.lat, path[i].m_latLon.lon);
res += MercatorBounds::DistanceOnEarth(p1, p2);
}
return res;
}
void Test(vector<TrafficGPSEncoder::DataPoint> & points)
{
double const kEps = 1e-5;
for (uint32_t version = 0; version <= TrafficGPSEncoder::kLatestVersion; ++version)
{
vector<uint8_t> buf;
MemWriter<decltype(buf)> memWriter(buf);
UNUSED_VALUE(TrafficGPSEncoder::SerializeDataPoints(version, memWriter, points));
vector<TrafficGPSEncoder::DataPoint> result;
MemReader memReader(buf.data(), buf.size());
ReaderSource<MemReader> src(memReader);
TrafficGPSEncoder::DeserializeDataPoints(version, src, result);
TEST_EQUAL(points.size(), result.size(), ());
for (size_t i = 0; i < points.size(); ++i)
{
TEST_EQUAL(points[i].m_timestamp, result[i].m_timestamp,
(points[i].m_timestamp, result[i].m_timestamp));
TEST(my::AlmostEqualAbsOrRel(points[i].m_latLon.lat, result[i].m_latLon.lat, kEps),
(points[i].m_latLon.lat, result[i].m_latLon.lat));
TEST(my::AlmostEqualAbsOrRel(points[i].m_latLon.lon, result[i].m_latLon.lon, kEps),
(points[i].m_latLon.lon, result[i].m_latLon.lon));
}
if (version == TrafficGPSEncoder::kLatestVersion)
{
LOG(LINFO, ("path length =", CalculateLength(points), "num points =", points.size(),
"compressed size =", buf.size()));
}
}
}
UNIT_TEST(Traffic_Serialization_Smoke)
{
vector<TrafficGPSEncoder::DataPoint> data = {
{0, ms::LatLon(0.0, 1.0), 1}, {0, ms::LatLon(0.0, 2.0), 2},
};
Test(data);
}
UNIT_TEST(Traffic_Serialization_EmptyPath)
{
vector<TrafficGPSEncoder::DataPoint> data;
Test(data);
}
UNIT_TEST(Traffic_Serialization_StraightLine100m)
{
vector<TrafficGPSEncoder::DataPoint> path = {
{0, ms::LatLon(0.0, 0.0), 1}, {0, ms::LatLon(0.0, 1e-3), 2},
};
Test(path);
}
UNIT_TEST(Traffic_Serialization_StraightLine50Km)
{
vector<TrafficGPSEncoder::DataPoint> path = {
{0, ms::LatLon(0.0, 0.0), 1}, {0, ms::LatLon(0.0, 0.5), 2},
};
Test(path);
}
UNIT_TEST(Traffic_Serialization_Zigzag500m)
{
vector<TrafficGPSEncoder::DataPoint> path;
for (size_t i = 0; i < 5; ++i)
{
double const x = i * 1e-3;
double const y = i % 2 == 0 ? 0 : 1e-3;
path.emplace_back(TrafficGPSEncoder::DataPoint(0, ms::LatLon(y, x), 3));
}
Test(path);
}
UNIT_TEST(Traffic_Serialization_Zigzag10Km)
{
vector<TrafficGPSEncoder::DataPoint> path;
for (size_t i = 0; i < 10; ++i)
{
double const x = i * 1e-2;
double const y = i % 2 == 0 ? 0 : 1e-2;
path.emplace_back(TrafficGPSEncoder::DataPoint(0, ms::LatLon(y, x), 0));
}
Test(path);
}
UNIT_TEST(Traffic_Serialization_Zigzag100Km)
{
vector<TrafficGPSEncoder::DataPoint> path;
for (size_t i = 0; i < 1000; ++i)
{
double const x = i * 1e-1;
double const y = i % 2 == 0 ? 0 : 1e-1;
path.emplace_back(TrafficGPSEncoder::DataPoint(0, ms::LatLon(y, x), 0));
}
Test(path);
}
UNIT_TEST(Traffic_Serialization_Circle20KmRadius)
{
vector<TrafficGPSEncoder::DataPoint> path;
size_t const n = 100;
for (size_t i = 0; i < n; ++i)
{
double const alpha = 2 * math::pi * i / n;
double const radius = 0.25;
double const x = radius * cos(alpha);
double const y = radius * sin(alpha);
path.emplace_back(TrafficGPSEncoder::DataPoint(0, ms::LatLon(y, x), 0));
}
Test(path);
}
UNIT_TEST(Traffic_Serialization_ExtremeLatLon)
{
vector<TrafficGPSEncoder::DataPoint> path = {
{0, ms::LatLon(-90, -180), 0}, {0, ms::LatLon(90, 180), 0},
};
Test(path);
}
} // namespace coding
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