/**
* \file
* \brief Tests of Raster class.
*
* \copyright
* Copyright (c) 2012-2021, OpenGeoSys Community (http://www.opengeosys.org)
* Distributed under a Modified BSD License.
* See accompanying file LICENSE.txt or
* http://www.opengeosys.org/project/license
*
*/
#include <gtest/gtest.h>
#include "GeoLib/Raster.h"
TEST(GeoLibRaster, EmptyRaster)
{
GeoLib::RasterHeader const header{0, 0, 0, MathLib::Point3d{{0, 0, 0}},
0, -9999};
std::vector<double> const data;
GeoLib::Raster const empty_raster{header, data.begin(), data.end()};
// accessing any pixel in the raster should throw an exception
EXPECT_THROW(empty_raster(0, 0), std::runtime_error);
}
TEST(GeoLibRaster, OnePixelRasterEmptyData)
{
GeoLib::RasterHeader const header{1, 1, 0, MathLib::Point3d{{0, 0, 0}},
0, -9999};
std::vector<double> const empty_data;
EXPECT_THROW(GeoLib::Raster(header, empty_data.begin(), empty_data.end()),
std::out_of_range);
}
TEST(GeoLibRaster, OnePixelRaster)
{
GeoLib::RasterHeader const header{1, 1, 0, MathLib::Point3d{{0, 0, 0}},
0, -9999};
std::vector<double> const data{1};
GeoLib::Raster const one_pixel_raster{header, data.begin(), data.end()};
EXPECT_EQ(1.0, one_pixel_raster(0, 0));
// accessing any other pixel in the raster should throw an exception
EXPECT_THROW(one_pixel_raster(1, 0), std::runtime_error);
EXPECT_THROW(one_pixel_raster(0, 1), std::runtime_error);
EXPECT_THROW(one_pixel_raster(1, 1), std::runtime_error);
EXPECT_THROW(one_pixel_raster(-1, 0), std::runtime_error);
}
TEST(GeoLibRaster, OneRowByTwoColumnsRaster)
{
GeoLib::RasterHeader const header{2, 1, 0, MathLib::Point3d{{0, 0, 0}},
0, -9999};
std::vector<double> const data{1, 2};
GeoLib::Raster const one_pixel_raster{header, data.begin(), data.end()};
EXPECT_EQ(1.0, one_pixel_raster(0, 0));
EXPECT_EQ(2.0, one_pixel_raster(0, 1));
// accessing any other pixel in the raster should throw an exception
EXPECT_THROW(one_pixel_raster(1, 0), std::runtime_error);
EXPECT_THROW(one_pixel_raster(1, 1), std::runtime_error);
}
TEST(GeoLibRaster, TwoRowsByFourColumnsRaster)
{
GeoLib::RasterHeader const header{4, 2, 0, MathLib::Point3d{{0, 0, 0}},
0, -9999};
std::vector<double> const data{1, 2, 3, 4, 5, 6, 7, 8};
GeoLib::Raster const raster{header, data.begin(), data.end()};
// compare first row
for (std::size_t c = 0; c < header.n_cols; ++c)
{
EXPECT_EQ(double(c + 1 + header.n_cols), raster(0, c));
}
// compare second row
for (std::size_t c = 0; c < header.n_cols; ++c)
{
EXPECT_EQ(double(c + 1), raster(1, c));
}
}