libs/gil/io/test/pnm_read_test.cpp

   1 //
   2 // Copyright 2013 Christian Henning
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 //#define BOOST_TEST_MODULE pnm_read_test_module
   9
  10 #include <boost/gil/extension/io/pnm.hpp>
  11
  12 #include <boost/test/unit_test.hpp>
  13
  14 #include "paths.hpp"
  15 #include "scanline_read_test.hpp"
  16
  17 using namespace std;
  18 using namespace boost::gil;
  19
  20 using tag_t = pnm_tag;
  21
  22 BOOST_AUTO_TEST_SUITE( gil_io_pnm_tests )
  23
  24 #ifdef BOOST_GIL_IO_USE_PNM_TEST_SUITE_IMAGES
  25
  26 template< typename Image >
  27 void write( Image&        img
  28           , const string& file_name
  29           )
  30 {
  31 #ifdef BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
  32     write_view( pnm_out + file_name
  33               , view( img )
  34               , tag_t()
  35               );
  36 #endif // BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
  37 }
  38
  39 template< typename Image >
  40 void test_pnm_scanline_reader( string filename )
  41 {
  42     test_scanline_reader<Image, pnm_tag>( string( pnm_in + filename ).c_str() );
  43 }
  44
  45 BOOST_AUTO_TEST_CASE( read_header_test )
  46 {
  47     {
  48         using backend_t = get_reader_backend<std::string const, tag_t>::type;
  49
  50         backend_t backend = read_image_info( pnm_filename
  51                                            , tag_t()
  52                                            );
  53
  54         BOOST_CHECK_EQUAL( backend._info._type     , pnm_image_type::color_asc_t::value );
  55         BOOST_CHECK_EQUAL( backend._info._width    , 256u                               );
  56         BOOST_CHECK_EQUAL( backend._info._height   , 256u                               );
  57         BOOST_CHECK_EQUAL( backend._info._max_value, 255u                               );
  58     }
  59 }
  60
  61 BOOST_AUTO_TEST_CASE( read_reference_images_test )
  62 {
  63     // p1.pnm
  64     {
  65         gray8_image_t img;
  66
  67         read_image( pnm_in + "p1.pnm", img, tag_t() );
  68         BOOST_CHECK_EQUAL( view( img ).width() , 200u );
  69         BOOST_CHECK_EQUAL( view( img ).height(), 200u );
  70
  71         write( img, "p1.pnm" );
  72
  73         test_pnm_scanline_reader< gray8_image_t >( "p1.pnm" );
  74     }
  75
  76     // p2.pnm
  77     {
  78         gray8_image_t img;
  79
  80         read_image( pnm_in + "p2.pnm", img, tag_t() );
  81         BOOST_CHECK_EQUAL( view( img ).width() , 200u );
  82         BOOST_CHECK_EQUAL( view( img ).height(), 200u );
  83
  84         write( img, "p2.pnm" );
  85
  86         test_pnm_scanline_reader< gray8_image_t >( "p2.pnm" );
  87     }
  88
  89     // p3.pnm
  90     {
  91         rgb8_image_t img;
  92
  93         read_image( pnm_in + "p3.pnm", img, tag_t() );
  94         BOOST_CHECK_EQUAL( view( img ).width() , 256u );
  95         BOOST_CHECK_EQUAL( view( img ).height(), 256u );
  96
  97         write( img, "p3.pnm" );
  98
  99         test_pnm_scanline_reader< rgb8_image_t >( "p3.pnm" );
 100     }
 101
 102     // p4.pnm
 103     {
 104         gray1_image_t img;
 105
 106         read_image( pnm_in + "p4.pnm", img, tag_t() );
 107         BOOST_CHECK_EQUAL( view( img ).width() , 200u );
 108         BOOST_CHECK_EQUAL( view( img ).height(), 200u );
 109
 110         write( img, "p4.pnm" );
 111
 112         test_pnm_scanline_reader< gray1_image_t >( "p4.pnm" );
 113     }
 114
 115     // p5.pnm
 116     {
 117         gray8_image_t img;
 118
 119         read_image( pnm_in + "p5.pnm", img, tag_t() );
 120         BOOST_CHECK_EQUAL( view( img ).width() , 200u );
 121         BOOST_CHECK_EQUAL( view( img ).height(), 200u );
 122
 123         write( img, "p5.pnm" );
 124
 125         test_pnm_scanline_reader< gray8_image_t >( "p5.pnm" );
 126     }
 127
 128     // p6.pnm
 129     {
 130         rgb8_image_t img;
 131
 132         read_image( pnm_in + "p6.pnm", img, tag_t() );
 133         BOOST_CHECK_EQUAL( view( img ).width() , 256u );
 134         BOOST_CHECK_EQUAL( view( img ).height(), 256u );
 135
 136         write( img, "p6.pnm" );
 137
 138         test_pnm_scanline_reader< rgb8_image_t >( "p6.pnm" );
 139     }
 140 }
 141
 142 #endif // BOOST_GIL_IO_USE_PNM_TEST_SUITE_IMAGES
 143
 144 BOOST_AUTO_TEST_SUITE_END()