lib/Math/GSL/Spline/Test.pm

   1 package Math::GSL::Spline::Test;
   2 use Math::GSL::Test qw/:all/;
   3 use base 'Test::Class';
   4 use Test::More 'no_plan';
   5 use Math::GSL qw/:all/;
   6 use Math::GSL::Spline qw/:all/;
   7 use Math::GSL::Errno qw/:all/;
   8 use Math::GSL::Interp qw/:all/;
   9 use Test::Exception;
  10 use Data::Dumper;
  11 use strict;
  12 use warnings;
  13
  14 BEGIN{ gsl_set_error_handler_off() };
  15
  16 sub make_fixture : Test(setup) {
  17     my $self = shift;
  18     $self->{spline} = gsl_spline_alloc($gsl_interp_linear,100);
  19 }
  20
  21 sub teardown : Test(teardown) {
  22 }
  23 sub TEST_FREE : Test {
  24     my $self = shift;
  25     gsl_spline_free($self->{spline});
  26     ok(!$@ && !$! && !$?,'gsl_spline_free');
  27 }
  28 sub TEST_MIN_SIZE : Test {
  29     my $self = shift;
  30     cmp_ok(2,'==',gsl_spline_min_size($self->{spline}),'min_size');
  31 }
  32 sub TEST_NAME : Test {
  33         my $self = shift;
  34         my $spline = $self->{spline};
  35         cmp_ok('linear', 'eq' , gsl_spline_name($spline));
  36 }
  37 sub TEST_ALLOC : Tests {
  38     isa_ok(gsl_spline_alloc($_,100), 'Math::GSL::Spline') for (
  39                $gsl_interp_linear,
  40                $gsl_interp_polynomial,
  41                $gsl_interp_cspline,
  42                $gsl_interp_cspline_periodic,
  43                $gsl_interp_akima,
  44                $gsl_interp_akima_periodic);
  45 }
  46
  47 sub MULTIPLE_TESTS : Tests {
  48   my $a = gsl_interp_accel_alloc ();
  49   my $spline = gsl_spline_alloc ($gsl_interp_polynomial, 4);
  50   my $data_x = [ 0.0, 1.0, 2.0, 3.0 ];
  51   my $data_y = [ 0.0, 1.0, 2.0, 3.0 ];
  52   ok_status(gsl_spline_init($spline, $data_x, $data_y, 4), $GSL_SUCCESS);
  53   my $test_x = [ 0.0, 0.5, 1.0, 1.5, 2.5, 3.0 ];
  54   my $test_y = [ 0.0, 0.5, 1.0, 1.5, 2.5, 3.0 ];
  55   my $test_dy = [ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 ];
  56   my $test_iy = [ 0.0, 0.125, 0.5, 9.0/8.0, 25.0/8.0, 9.0/2.0 ];
  57
  58   for my $i (0.. 3) {
  59     my $x = $test_x->[$i];
  60     my ($s1, $y) = gsl_spline_eval_e ($spline,$x, $a);
  61     my ($s2, $deriv) = gsl_spline_eval_deriv_e ($spline, $x, $a);
  62     my ($s3, $integ) = gsl_spline_eval_integ_e ($spline, $test_x->[0], $x, $a);
  63
  64     ok_status($s1);
  65     ok_status($s2);
  66     ok_status($s3);
  67
  68      ok_similar([$y, $deriv, $integ], [$test_y->[$i], $test_dy->[$i], $test_iy->[$i]], "eval_e, derive_e and integ_e",1e-10);
  69
  70      my $diff_y = $y - $test_y->[$i];
  71      my $diff_deriv = $deriv - $test_dy->[$i];
  72      my $diff_integ = $integ - $test_iy->[$i];
  73      ok( abs($diff_y) < 1e-10, "diff_y");
  74      ok( abs($diff_deriv) < 1e-10, "diff_deriv");
  75      ok( abs($diff_integ) < 1e-10, "diff_integ");
  76     }
  77   gsl_interp_accel_free ($a);
  78   gsl_spline_free ($spline);
  79 }
  80
  81 1;