1 package Math::GSL::Monte::Test;
2 use base q{Test::Class};
3 use Test::More tests => 15;
4 use Math::GSL::Monte qw/:all/;
5 use Math::GSL::Errno qw/:all/;
6 use Math::GSL::RNG qw/:all/;
7 use Math::GSL::Test qw/:all/;
11 BEGIN { gsl_set_error_handler_off() }
13 sub make_fixture : Test(setup) {
15 my $j = 1 + int(rand(20));
16 $self->{miser} = gsl_monte_miser_alloc($j);
17 $self->{vegas} = gsl_monte_vegas_alloc($j);
18 $self->{plain} = gsl_monte_plain_alloc($j);
22 sub teardown : Test(teardown) {
24 gsl_monte_miser_free($self->{miser});
25 gsl_monte_plain_free($self->{plain});
26 gsl_monte_vegas_free($self->{vegas});
29 sub TEST_INIT : Tests(3) {
31 ok_status( gsl_monte_plain_init($self->{plain}), $GSL_SUCCESS, 'plain' );
32 ok_status( gsl_monte_vegas_init($self->{vegas}), $GSL_SUCCESS, 'vegas' );
33 ok_status( gsl_monte_miser_init($self->{miser}), $GSL_SUCCESS, 'miser' );
36 sub TEST_MONTE_VEGAS_STATE : Tests {
37 my $state = Math::GSL::Monte::gsl_monte_vegas_state->new;
38 isa_ok($state, 'Math::GSL::Monte::gsl_monte_vegas_state');
41 sub TEST_MONTE_VEGAS_STATE_DIM : Tests {
42 my $state = Math::GSL::Monte::gsl_monte_vegas_state->new;
43 $state->swig_dim_set(1);
44 cmp_ok( $state->swig_dim_get , '==', 1, 'swig_dim_set' );
47 sub TEST_MONTE_PLAIN_INTEGRATE : Tests {
49 my $state = gsl_monte_plain_alloc(1);
50 my $rng = Math::GSL::RNG->new;
51 my ($status, @stuff) = gsl_monte_plain_integrate( sub { exp(-$_[0] ** 2) },
52 [ -1 ], [ 2 ], 1, 1000, $rng->raw, $state);
54 #warn Dumper [ @stuff ];
57 sub TEST_MONTE_VEGAS_INTEGRATE : Tests(3) {
59 my $state = gsl_monte_vegas_alloc(1);
60 my $rng = Math::GSL::RNG->new;
62 ($status, @stuff) = gsl_monte_vegas_integrate( sub { $_[0] ** 2 },
63 [ 0 ], [ 1 ], 1, 100, $rng->raw, $state);
65 ok( $state->{dim} == 1, 'dim = 1');
66 #warn Dumper [ @stuff ];
67 #warn Dumper [ $status, $state, $state->{result} ];
69 local $TODO = 'result of Monte carlo needs fixin';
70 ok_similar( [ 1/3 ] , [ $state->{result} ] );
73 sub TEST_ALLOC : Tests(6) {
75 isa_ok($self->{miser},'Math::GSL::Monte');
76 cmp_ok($self->{miser}->{dim},'==',$self->{dim});
78 isa_ok($self->{vegas},'Math::GSL::Monte');
79 cmp_ok($self->{vegas}->{dim},'==',$self->{dim});
81 isa_ok($self->{plain},'Math::GSL::Monte');
82 cmp_ok($self->{plain}->{dim},'==',$self->{dim});
84 Test::Class->runtests;