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/*
* (C) Copyright 2025- ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
*
* In applying this licence, ECMWF does not waive the privileges and immunities
* granted to it by virtue of its status as an intergovernmental organisation nor
* does it submit to any jurisdiction.
*/
#include <vector>
#include "eckit/geo/Exceptions.h"
#include "eckit/spec/Custom.h"
#include "eckit/testing/Test.h"
#include "eckit/types/FloatCompare.h"
#include "eccodes/eccodes.h"
#include "eccodes/geo/GribFromSpec.h"
#define CHECK(a) CODES_CHECK(a, nullptr)
bool get_string(const grib_handle* h, const char* key, std::string& value)
{
char buffer[10240];
size_t size = sizeof(buffer);
ASSERT(h);
int err = codes_get_string(h, key, buffer, &size);
if (err == CODES_NOT_FOUND) {
return false;
}
ASSERT(err == 0);
value = buffer;
return true;
}
void set_string(grib_handle* h, const char* key, const std::string& value)
{
size_t length = value.length();
CHECK(codes_set_string(h, key, value.c_str(), &length));
}
CASE("grid: O2")
{
const ::eckit::spec::Custom spec{ { "grid", "o2" } };
for (const auto* name : {
"GRIB1",
"GRIB2",
}) {
auto* sample = codes_grib_handle_new_from_samples(nullptr, name);
EXPECT(sample != nullptr);
auto* h = eccodes::geo::GribFromSpec::set(sample, spec);
EXPECT(h != nullptr);
long valid = 0;
set_string(h, "messageValidityChecks", "grid");
CHECK(codes_get_long(h, "isMessageValid", &valid));
EXPECT(valid == 1);
std::string type;
get_string(h, "gridType", type);
EXPECT(type == "reduced_gg");
std::string gridName;
get_string(h, "gridName", gridName);
EXPECT(gridName == "O2");
long N = 0;
CHECK(codes_get_long(h, "N", &N));
EXPECT(N == 2);
long numberOfDataPoints = 0;
CHECK(codes_get_long(h, "numberOfDataPoints", &numberOfDataPoints));
EXPECT(numberOfDataPoints == 88);
size_t pl_size = 0;
CHECK(codes_get_size(h, "pl", &pl_size));
std::vector<long> pl(pl_size, 0);
auto size = pl_size;
CHECK(codes_get_long_array(h, "pl", pl.data(), &size));
ASSERT(pl_size == size);
std::vector<long> pl_expected{ 20L, 24, 24, 20 };
EXPECT(pl == pl_expected);
std::vector<double> area(4);
CHECK(codes_get_double(h, "latitudeOfFirstGridPointInDegrees", &area[0]));
CHECK(codes_get_double(h, "longitudeOfFirstGridPointInDegrees", &area[1]));
CHECK(codes_get_double(h, "latitudeOfLastGridPointInDegrees", &area[2]));
CHECK(codes_get_double(h, "longitudeOfLastGridPointInDegrees", &area[3]));
EXPECT(eckit::types::is_strictly_greater(90., area[0]));
EXPECT(eckit::types::is_approximately_equal(area[1], 0.));
EXPECT(eckit::types::is_strictly_greater(area[2], -90.));
EXPECT(eckit::types::is_strictly_greater(360., area[3]));
codes_handle_delete(h);
}
}
CASE("grid: 1/1")
{
const ::eckit::spec::Custom spec{ { "grid", "1/1" } };
for (const auto* name : {
"GRIB1",
"GRIB2",
}) {
auto* sample = codes_grib_handle_new_from_samples(nullptr, name);
EXPECT(sample != nullptr);
auto* h = eccodes::geo::GribFromSpec::set(sample, spec);
EXPECT(h != nullptr);
long valid = 0;
set_string(h, "messageValidityChecks", "grid");
CHECK(codes_get_long(h, "isMessageValid", &valid));
EXPECT(valid == 1);
std::string type;
get_string(h, "gridType", type);
EXPECT(type == "regular_ll");
long Ni = 0;
long Nj = 0;
long numberOfDataPoints = 0;
CHECK(codes_get_long(h, "Ni", &Ni));
CHECK(codes_get_long(h, "Nj", &Nj));
CHECK(codes_get_long(h, "numberOfDataPoints", &numberOfDataPoints));
EXPECT(Ni * Nj == numberOfDataPoints);
std::vector<double> area(4);
CHECK(codes_get_double(h, "latitudeOfFirstGridPointInDegrees", &area[0]));
CHECK(codes_get_double(h, "longitudeOfFirstGridPointInDegrees", &area[1]));
CHECK(codes_get_double(h, "latitudeOfLastGridPointInDegrees", &area[2]));
CHECK(codes_get_double(h, "longitudeOfLastGridPointInDegrees", &area[3]));
EXPECT(eckit::types::is_approximately_equal(area[0], 90.));
EXPECT(eckit::types::is_approximately_equal(area[1], 0.));
EXPECT(eckit::types::is_approximately_equal(area[2], -90.));
EXPECT(eckit::types::is_approximately_equal(area[3], 360. - 1., 0.5 * 1e-6));
codes_handle_delete(h);
}
}
CASE("grid: reduced_ll")
{
const ::eckit::spec::Custom spec{ { "type", "reduced_ll" }, { "pl", std::vector<long>{ 0, 10, 0 } }, { "area", std::vector<double>{ 90., 0., -90., 360. } } };
for (const auto* name : {
"GRIB1",
"GRIB2",
}) {
auto* sample = codes_grib_handle_new_from_samples(nullptr, name);
EXPECT(sample != nullptr);
auto* h = eccodes::geo::GribFromSpec::set(sample, spec);
EXPECT(h != nullptr);
long valid = 0;
set_string(h, "messageValidityChecks", "grid");
CHECK(codes_get_long(h, "isMessageValid", &valid));
EXPECT(valid == 1);
std::string type;
get_string(h, "gridType", type);
EXPECT(type == "reduced_ll");
long Nj = 3;
long numberOfDataPoints = 10;
CHECK(codes_get_long(h, "Nj", &Nj));
CHECK(codes_get_long(h, "numberOfDataPoints", &numberOfDataPoints));
std::vector<double> area(4);
CHECK(codes_get_double(h, "latitudeOfFirstGridPointInDegrees", &area[0]));
CHECK(codes_get_double(h, "longitudeOfFirstGridPointInDegrees", &area[1]));
CHECK(codes_get_double(h, "latitudeOfLastGridPointInDegrees", &area[2]));
CHECK(codes_get_double(h, "longitudeOfLastGridPointInDegrees", &area[3]));
EXPECT(eckit::types::is_approximately_equal(area[0], 90.));
EXPECT(eckit::types::is_approximately_equal(area[1], 0.));
EXPECT(eckit::types::is_approximately_equal(area[2], -90.));
EXPECT(eckit::types::is_approximately_equal(area[3], 324.));
codes_handle_delete(h);
}
}
int main(int argc, char* argv[])
{
const char* ev_name = "ECCODES_ECKIT_GEO";
const char* ev_val = getenv(ev_name);
if (ev_val && atol(ev_val) != 0) {
return eckit::testing::run_tests(argc, argv);
}
printf("%s: This test is disabled (env. variable %s is not set)", argv[0], ev_name);
return 0;
}
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