lib/Math/GSL/Sort/Test.pm

   1 package Math::GSL::Sort::Test;
   2 use Math::GSL::Test qw/:all/;
   3 use base q{Test::Class};
   4 use Test::More;
   5 use Math::GSL::Permutation qw/:all/;
   6 use Math::GSL::Sort qw/:all/;
   7 use Math::GSL::Vector qw/:all/;
   8 use Math::GSL qw/:all/;
   9 use Math::GSL::Errno qw/:all/;
  10 use Data::Dumper;
  11 use strict;
  12
  13 BEGIN { gsl_set_error_handler_off(); }
  14
  15 sub make_fixture : Test(setup) {
  16     my $self = shift;
  17     $self->{data} = [ 2**15, 1, 42.7, -17, 6900, 3e-10 , 4242, 0e0];
  18 }
  19
  20 sub teardown : Test(teardown) {
  21 }
  22
  23 sub GSL_SORT_VECTOR : Tests {
  24    my $vec = Math::GSL::Vector->new([6,4,2,3,1,5]);
  25    gsl_sort_vector($vec->raw);
  26    ok_similar( [ $vec->as_list ], [ 1 .. 6 ] );
  27 }
  28
  29 sub GSL_SORT_VECTOR_LARGEST : Tests {
  30    my $vec = Math::GSL::Vector->new([reverse 0..50]);
  31    my $largest10 = [1..10];
  32    # $largest10 should not have to be passed in
  33    my ($status, $stuff) = gsl_sort_vector_largest($largest10, 10, $vec->raw);
  34    ok_status( $status);
  35    ok_similar( $stuff, [ reverse (41 .. 50) ] );
  36 }
  37
  38 sub GSL_SORT_VECTOR_SMALLEST : Tests {
  39    my $vec = Math::GSL::Vector->new([reverse 0..50]);
  40    my $smallest10 = [1..10];
  41    # $smallest10 should not have to be passed in
  42    my ($status, $stuff) = gsl_sort_vector_smallest($smallest10, 10, $vec->raw);
  43    ok_status( $status);
  44    ok_similar( $stuff, [ 0 .. 9 ] );
  45 }
  46
  47 sub GSL_SORT_VECTOR_INDEX : Tests {
  48   my $vec = Math::GSL::Vector->new([4,2,3,1,5]);
  49   my $p = Math::GSL::Permutation->new(5);
  50   ok_status(gsl_sort_vector_index($p->raw, $vec->raw));
  51   # indices in ascending order
  52   ok_similar( [ $p->as_list ], [ 3, 1, 2, 0 , 4] );
  53 }
  54
  55 sub GSL_SORT_VECTOR_SMALLEST_INDEX : Tests {
  56     my $self   = shift;
  57     my $p      = [ 1 .. $#{$self->{data}} ];
  58     my $vector = Math::GSL::Vector->new([4,2,3,1,5]);
  59     my ($status, $stuff) = gsl_sort_vector_smallest_index($p, 3, $vector->raw);
  60     ok_status($status);
  61     ok_similar( $stuff , [ 3, 1, 2] );
  62 }
  63
  64 sub GSL_SORT_VECTOR_LARGEST_INDEX : Tests {
  65     my $self   = shift;
  66     my $p      = [ 1 .. $#{$self->{data}} ];
  67     my $vector = Math::GSL::Vector->new([4,2,3,1,5]);
  68     my ($status, $stuff) = gsl_sort_vector_largest_index($p, 3, $vector->raw);
  69     ok_status($status);
  70     ok_similar( $stuff , [ 4,0,2] );
  71 }
  72
  73 sub GSL_SORT : Tests {
  74    my $self = shift;
  75    my $sorted = gsl_sort($self->{data}, 1, $#{$self->{data}} + 1 );
  76    ok_similar ( $sorted , [ -17, 0e0, 3e-10, 1, 42.7, 4242, 6900, 2**15 ], 'gsl_sort' );
  77 }
  78
  79 sub GSL_SORT_SMALLEST : Tests {
  80    my $self = shift;
  81    my $out = [1..10];
  82    my ($status, $sorted) = gsl_sort_smallest($out, 3, $self->{data}, 1, $#{$self->{data}}+1 );
  83    ok_status($status);
  84    ok_similar ( $sorted , [ -17, 0e0, 3e-10 ], 'gsl_sort_smallest' );
  85 }
  86
  87 sub GSL_SORT_LARGEST : Tests {
  88    my $self = shift;
  89    my $out = [1..10];
  90    my ($status, $sorted) = gsl_sort_largest($out, 3, $self->{data}, 1, $#{$self->{data}}+1 );
  91    ok_status($status);
  92    ok_similar ( $sorted , [ 2**15,  6900, 4242 ], 'gsl_sort_largest' );
  93 }
  94
  95 sub GSL_SORT_INDEX : Tests {
  96     my $self = shift;
  97     my $p = [ 1 .. $#{$self->{data}} ];
  98     my $sorted = gsl_sort_index($p, $self->{data}, 1, $#{$self->{data}}+1 );
  99     ok_similar( $sorted, [ 3, 7, 5, 1, 2, 6, 4, 0 ] );
 100 }
 101
 102 sub GSL_SORT_SMALLEST_INDEX : Tests {
 103     my $self = shift;
 104     my $p = [ 1 .. $#{$self->{data}} ];
 105     my $sorted = gsl_sort_smallest_index($p, 3, $self->{data}, 1, $#{$self->{data}}+1 );
 106     ok_similar( $sorted, [ 3, 7, 5 ] );
 107 }
 108
 109 sub GSL_SORT_LARGEST_INDEX : Tests {
 110     my $self = shift;
 111     my $p = [ 1 .. $#{$self->{data}} ];
 112     my $sorted = gsl_sort_largest_index($p, 3, $self->{data}, 1, $#{$self->{data}}+1 );
 113     ok_similar( $sorted, [ 0,4,6 ] );
 114 }
 115
 116 42;