1 package Math::GSL::Spline::Test;
2 use base 'Test::Class';
3 use Test::More tests => 38;
4 use Math::GSL::Errno qw/:all/;
5 use Math::GSL::Test qw/:all/;
6 use Math::GSL::Spline qw/:all/;
7 use Math::GSL::Interp qw/:all/;
13 BEGIN{ gsl_set_error_handler_off() };
15 sub make_fixture : Test(setup) {
17 $self->{spline} = gsl_spline_alloc($gsl_interp_linear,100);
20 sub teardown : Test(teardown) {
22 sub TEST_FREE : Test {
24 gsl_spline_free($self->{spline});
25 ok(!$@ && !$! && !$?,'gsl_spline_free');
27 sub TEST_MIN_SIZE : Test {
29 cmp_ok(2,'==',gsl_spline_min_size($self->{spline}),'min_size');
31 sub TEST_NAME : Test {
33 my $spline = $self->{spline};
34 cmp_ok('linear', 'eq' , gsl_spline_name($spline));
36 sub TEST_ALLOC : Tests {
37 isa_ok(gsl_spline_alloc($_,100), 'Math::GSL::Spline') for (
39 $gsl_interp_polynomial,
41 $gsl_interp_cspline_periodic,
43 $gsl_interp_akima_periodic);
46 sub MULTIPLE_TESTS : Tests {
47 my $a = gsl_interp_accel_alloc ();
48 my $spline = gsl_spline_alloc ($gsl_interp_polynomial, 4);
49 my $data_x = [ 0.0, 1.0, 2.0, 3.0 ];
50 my $data_y = [ 0.0, 1.0, 2.0, 3.0 ];
51 ok_status(gsl_spline_init($spline, $data_x, $data_y, 4), $GSL_SUCCESS);
52 my $test_x = [ 0.0, 0.5, 1.0, 1.5, 2.5, 3.0 ];
53 my $test_y = [ 0.0, 0.5, 1.0, 1.5, 2.5, 3.0 ];
54 my $test_dy = [ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 ];
55 my $test_iy = [ 0.0, 0.125, 0.5, 9.0/8.0, 25.0/8.0, 9.0/2.0 ];
58 my $x = $test_x->[$i];
59 my ($s1, $y) = gsl_spline_eval_e ($spline,$x, $a);
60 my ($s2, $deriv) = gsl_spline_eval_deriv_e ($spline, $x, $a);
61 my ($s3, $integ) = gsl_spline_eval_integ_e ($spline, $test_x->[0], $x, $a);
67 ok_similar([$y, $deriv, $integ], [$test_y->[$i], $test_dy->[$i], $test_iy->[$i]], "eval_e, derive_e and integ_e",1e-10);
69 my $diff_y = $y - $test_y->[$i];
70 my $diff_deriv = $deriv - $test_dy->[$i];
71 my $diff_integ = $integ - $test_iy->[$i];
72 ok( abs($diff_y) < 1e-10, "diff_y");
73 ok( abs($diff_deriv) < 1e-10, "diff_deriv");
74 ok( abs($diff_integ) < 1e-10, "diff_integ");
76 gsl_interp_accel_free ($a);
77 gsl_spline_free ($spline);
80 Test::Class->runtests;