dlib C++ Library - array2d.cpp

// Copyright (C) 2006 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#include <sstream>
#include <string>
#include <cstdlib>
#include <ctime>
#include <dlib/interfaces/enumerable.h>
#include <dlib/array2d.h>
#include "tester.h"
#include <dlib/pixel.h>
#include <dlib/image_transforms.h>
namespace 
{
 using namespace test;
 using namespace dlib;
 using namespace std;
 logger dlog("test.array2d");
 template <
 typename array2d
 >
 void array2d_kernel_test (
 )
 /*!
 requires
 - array2d is an implementation of array2d/array2d_kernel_abstract.h 
 is instantiated with unsigned long 
 ensures
 - runs tests on array2d for compliance with the specs
 !*/
 { 
 srand(static_cast<unsigned int>(time(0)));
 array2d test,test2;
 long nc, nr;
 DLIB_TEST(get_rect(test).is_empty());
 enumerable<unsigned long>& e = test;
 DLIB_TEST(e.at_start() == true);
 DLIB_TEST(e.size() == 0);
 DLIB_TEST(e.at_start() == true);
 DLIB_TEST(e.current_element_valid() == false);
 DLIB_TEST (e.move_next() == false);
 DLIB_TEST (e.move_next() == false);
 DLIB_TEST (e.move_next() == false);
 DLIB_TEST (e.move_next() == false);
 DLIB_TEST (e.move_next() == false);
 DLIB_TEST (e.move_next() == false);
 DLIB_TEST(e.size() == 0);
 DLIB_TEST(e.at_start() == false);
 DLIB_TEST(e.current_element_valid() == false);
 e.reset();
 DLIB_TEST(e.size() == 0);
 DLIB_TEST(e.at_start() == true);
 DLIB_TEST(e.current_element_valid() == false);
 DLIB_TEST(get_rect(test).is_empty());
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.size() == 0);
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.current_element_valid() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST(test.size() == 0);
 DLIB_TEST(test.at_start() == false);
 DLIB_TEST(test.current_element_valid() == false);
 test.reset();
 DLIB_TEST(test.size() == 0);
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.current_element_valid() == false);
 test.clear();
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.size() == 0);
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.current_element_valid() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 test.set_size(0,0);
 DLIB_TEST(get_rect(test).is_empty());
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.size() == 0);
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.current_element_valid() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 DLIB_TEST (test.move_next() == false);
 swap(test,test2);
 DLIB_TEST (test2.at_start() == false);
 DLIB_TEST (test2.current_element_valid() == false);
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.current_element_valid() == false);
 swap(test,test2);
 DLIB_TEST(test2.at_start() == true);
 DLIB_TEST(test2.current_element_valid() == false);
 DLIB_TEST(test.size() == 0);
 DLIB_TEST(test.at_start() == false);
 DLIB_TEST(test.current_element_valid() == false);
 test.reset();
 DLIB_TEST(test.size() == 0);
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.current_element_valid() == false);
 for (int j = 0; j < 30; ++j)
 {
 test2.clear();
 switch (j)
 {
 case 0:
 nc = 10;
 nr = 11;
 break;
 case 1:
 nc = 1;
 nr = 1;
 break;
 case 2:
 nc = 100;
 nr = 1;
 break;
 case 3:
 nc = 1;
 nr = 100;
 break;
 default:
 nc = ::rand()%100 + 1;
 nr = ::rand()%100 + 1;
 break;
 }
 test.set_size(nr,nc);
 DLIB_TEST(get_rect(test).left() == 0);
 DLIB_TEST(get_rect(test).top() == 0);
 DLIB_TEST(get_rect(test).right() == nc-1);
 DLIB_TEST(get_rect(test).bottom() == nr-1);
 DLIB_TEST(test.size() == static_cast<unsigned long>(nc*nr));
 DLIB_TEST(test.nr() == nr);
 DLIB_TEST(test.nc() == nc);
 DLIB_TEST(test.at_start() == true);
 DLIB_TEST(test.current_element_valid() == false);
 unsigned long i = 0;
 while (test.move_next())
 {
 DLIB_TEST(test.current_element_valid() == true);
 DLIB_TEST(test.at_start() == false);
 test.element() = i;
 DLIB_TEST(const_cast<const array2d&>(test).element() == i);
 ++i;
 }
 DLIB_TEST(i == test.size());
 DLIB_TEST(test.current_element_valid() == false);
 DLIB_TEST(test.nr() == nr);
 DLIB_TEST(test.nc() == nc);
 DLIB_TEST(test.at_start() == false);
 DLIB_TEST(test.size() == static_cast<unsigned long>(nc*nr));
 i = 0;
 for (long row = 0; row < test.nr(); ++row)
 {
 for (long col = 0; col < test.nc(); ++col)
 {
 DLIB_TEST_MSG(test[row][col] == i,
 "\n\trow: " << row <<
 "\n\tcol: " << col <<
 "\n\ti: " << i <<
 "\n\ttest[row][col]: " << test[row][col]);
 DLIB_TEST(test[row].nc() == test.nc());
 DLIB_TEST(test.current_element_valid() == false);
 DLIB_TEST(test.nr() == nr);
 DLIB_TEST(test.nc() == nc);
 DLIB_TEST(test.at_start() == false);
 DLIB_TEST(test.size() == static_cast<unsigned long>(nc*nr));
 ++i;
 }
 }
 test.reset();
 i = 0;
 while (test.move_next())
 {
 DLIB_TEST(test.element() == i);
 ++i;
 DLIB_TEST(test.current_element_valid() == true);
 DLIB_TEST(test.at_start() == false);
 }
 DLIB_TEST(i == test.size());
 test.reset();
 swap(test,test2);
 DLIB_TEST(test2.size() == static_cast<unsigned long>(nc*nr));
 DLIB_TEST(test2.nr() == nr);
 DLIB_TEST(test2.nc() == nc);
 DLIB_TEST(test2.at_start() == true);
 DLIB_TEST(test2.current_element_valid() == false);
 i = 0;
 while (test2.move_next())
 {
 DLIB_TEST(test2.current_element_valid() == true);
 DLIB_TEST(test2.at_start() == false);
 test2.element() = i;
 ++i;
 }
 DLIB_TEST(i == test2.size());
 DLIB_TEST(test2.current_element_valid() == false);
 DLIB_TEST(test2.nr() == nr);
 DLIB_TEST(test2.nr() == test2.nr());
 DLIB_TEST(test2.nc() == nc);
 DLIB_TEST(test2.nc() == test2.nc());
 DLIB_TEST(test2.at_start() == false);
 DLIB_TEST(test2.size() == static_cast<unsigned long>(nc*nr));
 i = 0;
 for (long row = 0; row < test2.nr(); ++row)
 {
 for (long col = 0; col < test2.nc(); ++col)
 {
 DLIB_TEST(test2[row][col] == i);
 DLIB_TEST(const_cast<const array2d&>(test2)[row][col] == i);
 DLIB_TEST(test2[row].nc() == test2.nc());
 DLIB_TEST(test2.current_element_valid() == false);
 DLIB_TEST(test2.nr() == nr);
 DLIB_TEST(test2.nr() == test2.nr());
 DLIB_TEST(test2.nc() == nc);
 DLIB_TEST(test2.nc() == test2.nc());
 DLIB_TEST(test2.at_start() == false);
 DLIB_TEST(test2.size() == static_cast<unsigned long>(nc*nr));
 ++i;
 }
 }
 test2.reset();
 i = 0;
 while (test2.move_next())
 {
 DLIB_TEST(test2.element() == i);
 DLIB_TEST(const_cast<const array2d&>(test2).element() == i);
 ++i;
 DLIB_TEST(test2.current_element_valid() == true);
 DLIB_TEST(test2.at_start() == false);
 }
 DLIB_TEST(i == test2.size());
 test2.clear();
 DLIB_TEST(test2.size() == 0);
 DLIB_TEST(test2.nr() == 0);
 DLIB_TEST(test2.nc() == 0);
 DLIB_TEST(test2.current_element_valid() == false);
 DLIB_TEST(test2.at_start() == true);
 DLIB_TEST(test.size() == 0);
 DLIB_TEST(test.nc() == 0);
 DLIB_TEST(test.nr() == 0);
 test.set_size(nr,nc);
 DLIB_TEST(test.size() == static_cast<unsigned long>(nc*nr));
 DLIB_TEST(test.nc() == nc);
 DLIB_TEST(test.nr() == nr);
 }
 // test the serialization
 istringstream sin;
 ostringstream sout;
 test.clear();
 test2.clear();
 DLIB_TEST(test.size() == 0);
 DLIB_TEST(test.nc() == 0);
 DLIB_TEST(test.nr() == 0);
 DLIB_TEST(test2.size() == 0);
 DLIB_TEST(test2.nc() == 0);
 DLIB_TEST(test2.nr() == 0);
 test.set_size(10,10);
 for (long row = 0; row < test.nr(); ++row)
 {
 for (long col = 0; col < test.nc(); ++col)
 {
 test[row][col] = row*col;
 }
 }
 serialize(test,sout);
 sin.str(sout.str());
 deserialize(test2,sin);
 DLIB_TEST(test2.size() == test.size());
 DLIB_TEST(test2.nc() == test.nc());
 DLIB_TEST(test2.nr() == test.nr());
 DLIB_TEST(test2.size() == 100);
 DLIB_TEST(test2.nc() == 10);
 DLIB_TEST(test2.nr() == 10);
 for (long row = 0; row < test.nr(); ++row)
 {
 for (long col = 0; col < test.nc(); ++col)
 {
 DLIB_TEST(test[row][col] == static_cast<unsigned long>(row*col));
 DLIB_TEST(test2[row][col] == static_cast<unsigned long>(row*col));
 }
 }
 test.set_size(10,11);
 DLIB_TEST(test.nr() == 10);
 DLIB_TEST(test.nc() == 11);
 test.set_size(0,0);
 DLIB_TEST(test.nr() == 0);
 DLIB_TEST(test.nc() == 0);
 }
 void test_serialization()
 {
 // Do these tests because there are overloads of the serialize routines
 // specifically for these types of pixel (except for unsigned short, 
 // we do that because you can never have too many tests).
 {
 array2d<rgb_alpha_pixel> img, img2;
 img.set_size(3,2);
 assign_all_pixels(img, 5);
 img[1][1].red = 9;
 img[1][1].green = 8;
 img[1][1].blue = 7;
 img[1][1].alpha = 3;
 ostringstream sout;
 serialize(img, sout);
 istringstream sin(sout.str());
 deserialize(img2, sin);
 DLIB_TEST(img2.nr() == 3);
 DLIB_TEST(img2.nc() == 2);
 for (long r = 0; r < img.nr(); ++r)
 {
 for (long c = 0; c < img.nc(); ++c)
 {
 DLIB_TEST(img[r][c].red == img2[r][c].red);
 DLIB_TEST(img[r][c].green == img2[r][c].green);
 DLIB_TEST(img[r][c].blue == img2[r][c].blue);
 DLIB_TEST(img[r][c].alpha == img2[r][c].alpha);
 }
 }
 }
 {
 array2d<hsi_pixel> img, img2;
 img.set_size(3,2);
 assign_all_pixels(img, 5);
 img[1][1].h = 9;
 img[1][1].s = 2;
 img[1][1].i = 3;
 ostringstream sout;
 serialize(img, sout);
 istringstream sin(sout.str());
 deserialize(img2, sin);
 DLIB_TEST(img2.nr() == 3);
 DLIB_TEST(img2.nc() == 2);
 for (long r = 0; r < img.nr(); ++r)
 {
 for (long c = 0; c < img.nc(); ++c)
 {
 DLIB_TEST(img[r][c].h == img2[r][c].h);
 DLIB_TEST(img[r][c].s == img2[r][c].s);
 DLIB_TEST(img[r][c].i == img2[r][c].i);
 }
 }
 }
 {
 array2d<bgr_pixel> img, img2;
 img.set_size(3,2);
 assign_all_pixels(img, 5);
 img[1][1].red = 1;
 img[1][1].green = 2;
 img[1][1].blue = 3;
 ostringstream sout;
 serialize(img, sout);
 istringstream sin(sout.str());
 deserialize(img2, sin);
 DLIB_TEST(img2.nr() == 3);
 DLIB_TEST(img2.nc() == 2);
 for (long r = 0; r < img.nr(); ++r)
 {
 for (long c = 0; c < img.nc(); ++c)
 {
 DLIB_TEST(img[r][c].red == img2[r][c].red);
 DLIB_TEST(img[r][c].green == img2[r][c].green);
 DLIB_TEST(img[r][c].blue == img2[r][c].blue);
 }
 }
 }
 {
 array2d<rgb_pixel> img, img2;
 img.set_size(3,2);
 assign_all_pixels(img, 5);
 img[1][1].red = 1;
 img[1][1].green = 2;
 img[1][1].blue = 3;
 ostringstream sout;
 serialize(img, sout);
 istringstream sin(sout.str());
 deserialize(img2, sin);
 DLIB_TEST(img2.nr() == 3);
 DLIB_TEST(img2.nc() == 2);
 for (long r = 0; r < img.nr(); ++r)
 {
 for (long c = 0; c < img.nc(); ++c)
 {
 DLIB_TEST(img[r][c].red == img2[r][c].red);
 DLIB_TEST(img[r][c].green == img2[r][c].green);
 DLIB_TEST(img[r][c].blue == img2[r][c].blue);
 }
 }
 }
 {
 array2d<unsigned short> img, img2;
 img.set_size(3,2);
 assign_all_pixels(img, 5);
 img[1][1] = 9;
 ostringstream sout;
 serialize(img, sout);
 istringstream sin(sout.str());
 deserialize(img2, sin);
 DLIB_TEST(img2.nr() == 3);
 DLIB_TEST(img2.nc() == 2);
 for (long r = 0; r < img.nr(); ++r)
 {
 for (long c = 0; c < img.nc(); ++c)
 {
 DLIB_TEST(img[r][c] == img2[r][c]);
 }
 }
 }
 {
 array2d<unsigned char> img, img2;
 img.set_size(3,2);
 assign_all_pixels(img, 5);
 img[1][1] = 9;
 ostringstream sout;
 serialize(img, sout);
 istringstream sin(sout.str());
 deserialize(img2, sin);
 DLIB_TEST(img2.nr() == 3);
 DLIB_TEST(img2.nc() == 2);
 for (long r = 0; r < img.nr(); ++r)
 {
 for (long c = 0; c < img.nc(); ++c)
 {
 DLIB_TEST(img[r][c] == img2[r][c]);
 }
 }
 DLIB_TEST((char*)&img[0][0] + img.width_step() == (char*)&img[1][0]);
 }
 COMPILE_TIME_ASSERT(is_array2d<array2d<unsigned char> >::value == true);
 COMPILE_TIME_ASSERT(is_array2d<array2d<float> >::value == true);
 COMPILE_TIME_ASSERT(is_array2d<float>::value == false);
 }
 class array2d_tester : public tester
 {
 public:
 array2d_tester (
 ) :
 tester ("test_array2d",
 "Runs tests on the array2d component.")
 {}
 void perform_test (
 )
 {
 dlog << LINFO << "testing kernel_1a";
 array2d_kernel_test<array2d<unsigned long> >();
 print_spinner();
 test_serialization();
 print_spinner();
 }
 } a;
}