lib/Math/GSL/Vector/Test.pm

   1 package Math::GSL::Vector::Test;
   2 use base q{Test::Class};
   3 use Test::More;
   4 use Math::GSL::Vector qw/:all/;
   5 use Math::GSL qw/:all/;
   6 use Data::Dumper;
   7 use Math::GSL::Errno qw/:all/;
   8 use Test::Exception;
   9 use strict;
  10
  11 # This allows us to eval code
  12 BEGIN{ gsl_set_error_handler_off(); }
  13
  14 sub make_fixture : Test(setup) {
  15     my $self = shift;
  16     $self->{vector} = gsl_vector_alloc(5);
  17     $self->{object} = Math::GSL::Vector->new(5);
  18 }
  19
  20 sub teardown : Test(teardown) {
  21     unlink 'vector' if -f 'vector';
  22 }
  23
  24 sub GSL_VECTOR_ALLOC : Tests {
  25     my $vector = gsl_vector_alloc(5);
  26     isa_ok($vector, 'Math::GSL::Vector');
  27 }
  28 sub GSL_VECTOR_LENGTH: Tests {
  29     my $self = shift;
  30     my $vector = $self->{object};
  31     ok( $vector->length == 5, '$vector->length' );
  32 }
  33 sub GSL_VECTOR_SET_GET: Tests {
  34     my $self = shift;
  35     gsl_vector_set($self->{vector}, 0, 42 );
  36     my $elem   = gsl_vector_get($self->{vector}, 0);
  37     ok( $elem == 42, 'gsl_vector_set/gsl_vector_get' );
  38 }
  39
  40 sub GSL_VECTOR_ISNONNEG: Tests {
  41     my $self = shift;
  42     map { gsl_vector_set($self->{vector}, $_, -1 ) } (0..4);
  43     ok( !gsl_vector_isnonneg($self->{vector}),'gsl_vector_isnonneg' );
  44     map { gsl_vector_set($self->{vector}, $_, 1 ) } (0..4);
  45     ok( gsl_vector_isnonneg($self->{vector}),'gsl_vector_isnonneg' );
  46 }
  47
  48 sub GSL_VECTOR_ISNULL: Tests {
  49     my $self = shift;
  50     ok( !gsl_vector_isnull($self->{vector}), 'gsl_vector_isnull' );
  51     map { gsl_vector_set($self->{vector}, $_, 0 ) } (0..4);
  52     ok( gsl_vector_isnull($self->{vector}),'gsl_vector_isnull' );
  53     gsl_vector_set($self->{vector}, 0, 5 );
  54     ok( !gsl_vector_isnull($self->{vector}), 'gsl_vector_isnull' );
  55 }
  56
  57 sub GSL_VECTOR_ISPOS: Tests {
  58     my $self = shift;
  59     map { gsl_vector_set($self->{vector}, $_, -1 ) } (0..4);
  60     ok( !gsl_vector_ispos($self->{vector}),'gsl_vector_pos' );
  61     map { gsl_vector_set($self->{vector}, $_, 1 ) } (0..4);
  62     ok( gsl_vector_ispos($self->{vector}),'gsl_vector_pos' );
  63 }
  64
  65 sub GSL_VECTOR_ISNEG: Tests {
  66     my $self = shift;
  67
  68     map { gsl_vector_set($self->{vector}, $_, -$_ ) } (0..4);
  69     ok( !gsl_vector_isneg($self->{vector}),'gsl_vector_neg' );
  70
  71     gsl_vector_set($self->{vector}, 0, -1 );
  72
  73     ok( gsl_vector_isneg($self->{vector}),'gsl_vector_neg' );
  74 }
  75
  76 sub GSL_VECTOR_NEW: Tests {
  77     my $vec = Math::GSL::Vector->new( [ map { $_ ** 2 } (1..10) ] );
  78     isa_ok( $vec, 'Math::GSL::Vector', 'Math::GSL::Vector->new($values)' );
  79
  80     dies_ok( sub { Math::GSL::Vector->new(-1) }, 'new takes only positive indices');
  81
  82     dies_ok( sub { Math::GSL::Vector->new(3.14) },  'new takes only integer indices');
  83
  84     dies_ok( sub { Math::GSL::Vector->new([]) },'new takes only nonempty array refs');
  85
  86     $vec = Math::GSL::Vector->new(42);
  87     ok( $vec->length == 42 , 'new creates empty vectors of a given length');
  88 }
  89 sub GSL_VECTOR_AS_LIST: Tests {
  90     my $vec = Math::GSL::Vector->new( [ map { $_ ** 2 } (reverse 1..10) ] );
  91     my @x = $vec->as_list;
  92     is_deeply( \@x, [map { $_ ** 2 } (reverse 1..10)] );
  93 }
  94
  95 sub GSL_VECTOR_SET: Tests {
  96     my $vec = Math::GSL::Vector->new( [ map { $_ ** 2 } (1..10) ] );
  97     $vec->set( [ 0..4] , [ reverse 1..5 ] );
  98     my ($x) = $vec->get([0]);
  99     ok( $x == 5, "gsl_vector_set: $x ?= 5" );
 100 }
 101 sub GSL_VECTOR_MIN: Tests {
 102     my $self = shift;
 103     my $vec = Math::GSL::Vector->new( [ map { $_ ** 2 } (0..4) ] );
 104     ok_similar( $vec->min ,0, '$vec->min' );
 105     ok_similar( gsl_vector_min($self->{vector}) ,0, 'gsl_vector_min' );
 106 }
 107
 108 sub GSL_VECTOR_MAX: Tests {
 109     my $vec = Math::GSL::Vector->new( [ 3, 567, 4200 ]);
 110     ok_similar( $vec->max ,4200, '$vec->min' );
 111     ok_similar( gsl_vector_max($vec->raw) ,4200, 'gsl_vector_max' );
 112 }
 113 sub GSL_VECTOR_FREAD_FWRITE: Tests {
 114     my $self = shift;
 115     map { gsl_vector_set($self->{vector}, $_, $_ ** 2 ) } (0..4); ;
 116
 117     my $fh = fopen("vector", "w");
 118     my $status = gsl_vector_fwrite($fh, $self->{vector} );
 119     ok( ! $status, 'gsl_vector_fwrite' );
 120     ok( -f "vector", 'gsl_vector_fwrite' );
 121     fclose($fh);
 122
 123     map { gsl_vector_set($self->{vector}, $_, $_ ** 3 ) } (0..4);
 124
 125     $fh = fopen("vector", "r");
 126
 127     gsl_vector_fread($fh, $self->{vector} );
 128     is_deeply( [ map { gsl_vector_get($self->{vector}, $_) } (0..4) ],
 129                [ map { $_ ** 2 } (0..4) ],
 130              );
 131     fclose($fh);
 132 }
 133
 134 sub GSL_VECTOR_SUBVECTOR : Tests {
 135     my $self = shift;
 136     map { gsl_vector_set($self->{vector}, $_, $_ ** 2 ) } (0..4); ;
 137     my $vec_sub = gsl_vector_subvector($self->{vector}, 2, 3);
 138
 139     ok_similar( [ map { gsl_vector_get($vec_sub->{vector}, $_) } (0..2) ],
 140                 [ 4, 9, 16 ],
 141               );
 142 }
 143
 144 sub GSL_VECTOR_CALLOC : Tests {
 145    my $vector = gsl_vector_calloc(5);
 146    isa_ok($vector, 'Math::GSL::Vector');
 147 }
 148
 149 sub GSL_VECTOR_SET_ALL : Tests {
 150    my $vec = Math::GSL::Vector->new(5);
 151    gsl_vector_set_all($vec->raw, 4);
 152    ok_similar( [ $vec->as_list ], [ (4) x 5 ] );
 153 }
 154
 155 sub GSL_VECTOR_SET_ZERO : Tests {
 156    my $self = shift;
 157    gsl_vector_set_zero($self->{vector});
 158    map { is(gsl_vector_get($self->{vector} , $_ ), 0) } (0..4);
 159 }
 160
 161 sub GSL_VECTOR_SET_BASIS : Tests {
 162    my $self = shift;
 163    my $x = gsl_vector_set_basis($self->{vector}, 0);
 164    is (gsl_vector_get($self->{vector} , 0 ), 1);
 165    is ($x, 0, "output");
 166    map { is(gsl_vector_get($self->{vector} , $_ ), 0) } (1..4);
 167 }
 168
 169 sub GSL_VECTOR_SUBVECTOR_WITH_STRIDE : Tests {
 170    my $self = shift;
 171    map { gsl_vector_set($self->{vector}, $_, $_ ** 2 ) } (0..4); ;
 172    my $sub_stride = gsl_vector_subvector_with_stride($self->{vector}, 0, 2, 3);
 173    is(gsl_vector_get($sub_stride->{vector} , 0 ), 0, "first element");
 174    is(gsl_vector_get($sub_stride->{vector} , 1 ), 4, "second element");
 175    is(gsl_vector_get($sub_stride->{vector} , 2 ), 16, "third element");
 176 }
 177
 178 sub GSL_VECTOR_MAX_INDEX : Tests {
 179    my $self = shift;
 180    map { gsl_vector_set($self->{vector}, $_, $_ ** 2 ) } (0..4); ;
 181    my $index = gsl_vector_max_index($self->{vector});
 182    is($index, 4, "Position of the maximum");
 183 }
 184
 185 sub GSL_VECTOR_MIN_INDEX : Tests {
 186    my $self = shift;
 187    map { gsl_vector_set($self->{vector}, $_, $_ ** 2 ) } (0..4); ;
 188    my $index = gsl_vector_min_index($self->{vector});
 189    is($index, 0, "Position of the minimum");
 190 }
 191
 192 sub GSL_VECTOR_MINMAX_INDEX : Tests {
 193    my $self = shift;
 194    my ($min, $max);
 195    map { gsl_vector_set($self->{vector}, $_, $_ ** 2 ) } (0..4);
 196    ($min, $max) = gsl_vector_minmax_index($self->{vector});
 197    ok_similar( [ 0, 4 ], [ $min, $max], 'gsl_vector_minmax_index' );
 198 }
 199
 200 sub GSL_VECTOR_MINMAX : Tests {
 201    my ($min, $max);
 202    my $vector->{vector} = gsl_vector_alloc(5);
 203    map { gsl_vector_set($vector->{vector}, $_, $_ ** 2 ) } (0..4);
 204
 205    ($min, $max) = Math::GSL::Vector::gsl_vector_minmax($vector->{vector});
 206
 207    ok_similar( [ 0, 16 ], [ $min, $max], 'gsl_vector_minmax' );
 208 }
 209
 210 sub GSL_VECTOR_MEMCPY : Tests {
 211    my $self = shift;
 212    my $copy->{vector} = gsl_vector_alloc(5);
 213    map { gsl_vector_set($self->{vector}, $_, $_ ** 2 ) } (0..4); ;
 214    is( gsl_vector_memcpy($copy->{vector}, $self->{vector}), 0);
 215    map { is(gsl_vector_get($copy->{vector}, $_), $_ ** 2 ) } (0..4); ;
 216 }
 217
 218 sub GSL_VECTOR_VIEW_ARRAY : Tests {
 219    my @array = [1,2,3,4,5,6];
 220    my $vec_view = gsl_vector_view_array(@array, 2);
 221    map { is(gsl_vector_get($vec_view->{vector}, $_), $_+1 ) } (0..1); ;
 222 }
 223
 224 sub GSL_VECTOR_REVERSE : Tests {
 225    my $self = shift;
 226    map { gsl_vector_set($self->{vector}, $_, $_ ** 2 ) } (0..4); ;
 227    is( gsl_vector_reverse($self->{vector}), 0);
 228    ok_similar( [ 16, 9, 4, 1, 0], [ map { gsl_vector_get($self->{vector}, $_) } 0..4 ] );
 229 }
 230
 231 sub GSL_VECTOR_SWAP_ELEMENTS : Tests {
 232    my $self = shift;
 233    map { gsl_vector_set($self->{vector}, $_, $_ ** 2 ) } (0..4); ;
 234    is( gsl_vector_swap_elements($self->{vector}, 0, 4), 0);
 235    is(gsl_vector_get($self->{vector}, 0), 16);
 236    is(gsl_vector_get($self->{vector}, 4), 0);
 237    map { is(gsl_vector_get($self->{vector}, $_), $_ ** 2 ) } (1..3); ;
 238 }
 239
 240 sub GSL_VECTOR_ADD : Tests {
 241    my $self = shift;
 242    my $second_vec->{vector} = gsl_vector_alloc(5);
 243    map { gsl_vector_set($self->{vector}, $_, $_ ) } (0..4); ;
 244    map { gsl_vector_set($second_vec->{vector}, $_, $_ ) } (0..4); ;
 245    is(gsl_vector_reverse($second_vec->{vector}),0);
 246    is( gsl_vector_add($self->{vector}, $second_vec->{vector}), 0);
 247    map { is(gsl_vector_get($self->{vector}, $_), 4 ) } (0..4); ;
 248 }
 249
 250 sub GSL_VECTOR_SUB : Tests {
 251    my $self = shift;
 252    my $second_vec->{vector} = gsl_vector_alloc(5);
 253    map { gsl_vector_set($self->{vector}, $_, $_ ) } (0..4); ;
 254    map { gsl_vector_set($second_vec->{vector}, $_, 1) } (0..4); ;
 255    is( gsl_vector_sub($self->{vector}, $second_vec->{vector}), 0);
 256    map { is(gsl_vector_get($self->{vector}, $_), $_ - 1 ) } (0..4); ;
 257 }
 258
 259 sub GSL_VECTOR_MUL : Tests {
 260    my $self = shift;
 261    my $second_vec->{vector} = gsl_vector_alloc(5);
 262    map { gsl_vector_set($self->{vector}, $_, $_ ) } (0..4); ;
 263    map { gsl_vector_set($second_vec->{vector}, $_, 2) } (0..4); ;
 264    is( gsl_vector_mul($self->{vector}, $second_vec->{vector}), 0);
 265    map { is(gsl_vector_get($self->{vector}, $_), $_ * 2 ) } (0..4); ;
 266 }
 267
 268 sub GSL_VECTOR_DIV : Tests {
 269    my $self = shift;
 270    my $second_vec->{vector} = gsl_vector_alloc(5);
 271    map { gsl_vector_set($self->{vector}, $_, $_*2 ) } (0..4); ;
 272    map { gsl_vector_set($second_vec->{vector}, $_, 2) } (0..4); ;
 273    is( gsl_vector_div($self->{vector}, $second_vec->{vector}), 0);
 274    map { is(gsl_vector_get($self->{vector}, $_), $_ ) } (0..4); ;
 275 }
 276
 277 sub GSL_VECTOR_SCALE : Tests {
 278    my $v = Math::GSL::Vector->new([0..4]);
 279    is( gsl_vector_scale($v->raw, 2), 0);
 280    ok_similar( [ $v->as_list ], [ 0,2,4,6,8 ] );
 281 }
 282
 283 sub GSL_VECTOR_SCALE_OVERLOAD : Tests {
 284    my $v = Math::GSL::Vector->new([0..4]);
 285    my $expected = [ map { $_*5} (0..4) ];
 286    $v = 5 * $v;
 287    ok_similar( [ $v->as_list ],  $expected );
 288
 289    my $w = Math::GSL::Vector->new([0..4]);
 290    $w = $w * 5;
 291    ok_similar( [ $w->as_list ], $expected );
 292 }
 293
 294 sub GSL_VECTOR_DOT_PRODUCT : Tests {
 295    my $v = Math::GSL::Vector->new([0..4]);
 296    my $w = Math::GSL::Vector->new([0..4]);
 297
 298    ok_similar( $v * $w ,  4*4 + 3*3 + 2*2 + 1*1 );
 299
 300    my $z = Math::GSL::Vector->new([0..10]);
 301    dies_ok( sub { $z * $v; }, 'dot_product checks vector length' );
 302
 303    my $q = Math::GSL::Vector->new(5);
 304    ok_similar ( $q * $q, 0, 'newly created vectors are zero-filled');
 305 }
 306
 307 sub GSL_VECTOR_SWAP : Tests {
 308
 309    my @idx  = (0..(5+int rand(5)));
 310    my $vec1 = gsl_vector_alloc($#idx+1);
 311    my $vec2 = gsl_vector_alloc($#idx+1);
 312
 313    map { gsl_vector_set($vec1, $_, $_**2 ) } @idx;
 314    map { gsl_vector_set($vec2, $_, $_)     } @idx;
 315
 316    is( gsl_vector_swap($vec1, $vec2), 0);
 317
 318    ok_similar( [ map { gsl_vector_get($vec1, $_)  } @idx ],
 319                [ @idx ],
 320              );
 321    ok_similar( [ map { gsl_vector_get($vec2, $_)  } @idx ],
 322                [ map { $_**2 } @idx ],
 323              );
 324 }
 325
 326 sub GSL_VECTOR_FPRINTF_FSCANF : Tests {
 327    my $vec1 = Math::GSL::Vector->new([ map { $_ ** 2 } (0..4) ]);
 328
 329    my $fh = fopen("vector", "w");
 330    ok( defined $fh, 'fopen -  write');
 331    is( gsl_vector_fprintf($fh, $vec1->raw, "%f"), 0);
 332    is( fclose($fh), 0 );
 333
 334    my $vec2 = Math::GSL::Vector->new([ map { $_ ** 3 } (0..4) ]);
 335
 336    $fh = fopen("vector", "r");
 337    ok( defined $fh, 'fopen  - readonly');
 338
 339    is(gsl_vector_fscanf($fh, $vec2->raw), 0);
 340
 341    ok_similar( [ $vec2->as_list ], [ map { $_ ** 2 } (0..4) ]);
 342    is( fclose($fh), 0 );
 343 }
 344 1;