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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright 2021, Blender Foundation.
*/
#include "testing/testing.h"
#include "COM_BufferRange.h"
namespace blender::compositor::tests {
TEST(BufferRange, Constructor)
{
const int size = 5;
BufferRange<float> range(nullptr, 1, size, 4);
EXPECT_EQ(range.size(), size);
}
static void fill_buffer_with_indexes(float *buf, int buf_len)
{
for (int i = 0; i < buf_len; i++) {
buf[i] = i;
}
}
TEST(BufferRange, Subscript)
{
const int start = 2;
const int size = 4;
const int num_channels = 3;
const int buf_len = (start + size) * num_channels;
float buf[buf_len];
BufferRange<float> range(buf, start, size, num_channels);
fill_buffer_with_indexes(buf, buf_len);
int buf_index = start * num_channels;
for (int i = 0; i < size; i++) {
const float *elem = range[i];
for (int ch = 0; ch < num_channels; ch++) {
EXPECT_NEAR(elem[ch], buf_index, FLT_EPSILON);
buf_index++;
}
}
EXPECT_EQ(buf_index, buf_len);
}
TEST(BufferRange, SingleElemBufferIteration)
{
const int start = 1;
const int size = 3;
const int num_channels = 4;
float buf[num_channels];
const int stride = 0;
BufferRange<float> range(buf, start, size, stride);
int elems_count = 0;
for (float *elem : range) {
EXPECT_EQ(elem, buf);
elems_count++;
}
EXPECT_EQ(elems_count, 1);
}
TEST(BufferRange, FullBufferIteration)
{
const int start = 2;
const int size = 5;
const int num_channels = 4;
const int buf_len = (start + size) * num_channels;
float buf[buf_len];
BufferRange<float> range(buf, start, size, num_channels);
fill_buffer_with_indexes(buf, buf_len);
int buf_index = start * num_channels;
for (float *elem : range) {
for (int ch = 0; ch < num_channels; ch++) {
EXPECT_NEAR(elem[ch], buf_index, FLT_EPSILON);
buf_index++;
}
}
EXPECT_EQ(buf_index, buf_len);
}
} // namespace blender::compositor::tests
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