Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

156 lines (123 sloc) 4.259 kb
package Math::GSL::RNG::Test;
use base q{Test::Class};
use Test::More tests => 32;
use Math::GSL qw/:all/;
use Math::GSL::RNG qw/:all/;
use Math::GSL::Test qw/:all/;
use Math::GSL::Errno qw/:all/;
use Data::Dumper;
use strict;
BEGIN { gsl_set_error_handler_off() }
sub make_fixture : Test(setup) {
my $self = shift;
$self->{rng} = gsl_rng_alloc($gsl_rng_default);
gsl_rng_set( $self->{rng}, 1 + 9*(int rand) );
}
sub teardown : Test(teardown) {
my $self = shift;
unlink 'rng' if -f 'rng';
gsl_rng_free($self->{rng});
}
sub GSL_RNG_TYPE : Tests {
my $self = shift;
my $type = Math::GSL::RNG::gsl_rng_type->new;
isa_ok( $type, 'Math::GSL::RNG::gsl_rng_type', 'gsl_rng_type' );
}
sub GSL_RNG_ALLOC : Tests {
for my $rngtype ( $gsl_rng_random256_bsd, $gsl_rng_knuthran,
$gsl_rng_transputer, $gsl_rng_knuthran2002) {
my $rng;
eval { $rng = gsl_rng_alloc($rngtype) };
isa_ok( $rng, 'Math::GSL::RNG');
ok( !$@ ,'gsl_rng_alloc');
}
}
sub GSL_RNG_NEW: Tests {
my $rng;
$rng = Math::GSL::RNG->new($gsl_rng_knuthran, int 10*rand);
isa_ok($rng, 'Math::GSL::RNG' );
$rng = Math::GSL::RNG->new($gsl_rng_knuthran);
isa_ok($rng, 'Math::GSL::RNG' );
$rng = Math::GSL::RNG->new;
isa_ok($rng, 'Math::GSL::RNG' );
}
sub GSL_RNG_METHODS : Tests {
can_ok('Math::GSL::RNG', qw/copy get new free/ );
}
sub GSL_RNG_STATE : Tests {
my $seed = int 10*rand;
my $k = 10 + int(100*rand);
my $rng1 = Math::GSL::RNG->new($gsl_rng_knuthran, $seed );
map { my $x = $rng1->get } (1..$k);
my $rng2 = Math::GSL::RNG->new($gsl_rng_knuthran, $seed );
$rng2 = $rng1->copy;
my @vals1 = map { $rng1->get } (1..$k);
my @vals2 = map { $rng2->get } (1..$k);
is_deeply( [@vals1], [@vals2], "state test, $#vals1 values checked");
}
sub GSL_RNG_GET : Tests(2) {
my $rng = Math::GSL::RNG->new;
my $x = $rng->get;
ok( defined $x, '$rng->get' );
my @values = $rng->get(10);
ok( @values == 10, 'got 10 values from get->(10)');
}
sub GSL_RNG_NAME : Tests {
my $self = shift;
my $name1 = gsl_rng_name($self->{rng});
ok( defined $name1 , "\$gsl_rng_default=$name1" );
my $rng = Math::GSL::RNG->new;
my $name2 = $rng->name;
ok($name1 eq $name2, "\$rng->name == gsl_rng_name = $name2" );
}
sub GSL_RNG_SIZE : Tests {
my $self = shift;
my $size = gsl_rng_size($self->{rng});
ok( $size > 0, 'gsl_rng_size' );
}
sub GSL_RNG_MIN_AND_MAX : Tests {
my $self = shift;
my $rng = $self->{rng};
my ($min,$max) = (gsl_rng_min($rng), gsl_rng_max($rng));
map { gsl_rng_get($rng) } (1..int(rand(100)));
ok( defined $min && defined $max
&& ($min <= $max), 'gsl_rng_min and gsl_rng_max');
}
sub GSL_RNG_NO_MORE_SECRETS : Tests {
my $seed = 1+int 10*rand;
my $k = 10 + int(100*rand);
my $rng1 = Math::GSL::RNG->new($gsl_rng_knuthran, $seed );
my $rng2 = Math::GSL::RNG->new($gsl_rng_knuthran, $seed );
# throw away the first $k values
map { $rng1->get && $rng2->get } (1..$k);
my ($n1,$n2) = ( $rng1->get , $rng2->get );
ok( $n1 == $n2 , "parrallel state test: $n1 ?= $n2" );
}
sub GSL_RNG_DEFAULT : Tests {
my $self = shift;
my $seed = 42;
my $rng = gsl_rng_alloc($gsl_rng_default);
isa_ok( $rng, 'Math::GSL::RNG', 'gsl_rng_alloc' );
eval { gsl_rng_set($rng, $seed) };
isa_ok( $rng, 'Math::GSL::RNG', 'gsl_rng_set' );
ok( ! $@, 'gsl_rng_set' );
my $rand = gsl_rng_get($rng);
ok( defined $rand && $rand == 1608637542, 'gsl_rng_get' );
my $rng2 = gsl_rng_alloc($gsl_rng_default);
eval { gsl_rng_memcpy($rng2, $rng) };
ok ( ! $@, 'gsl_rng_memcpy' );
eval { Math::GSL::RNG::gsl_rng_free($rng) };
ok( ! $@, 'gsl_rng_free' );
}
sub GSL_RNG_FWRITE_FREAD : Tests {
my $self = shift;
my $rng = gsl_rng_alloc($gsl_rng_default);
my $fh = gsl_fopen("rng" , 'w');
ok_status(gsl_rng_fwrite($fh, $self->{rng}));
ok_status(gsl_fclose($fh));
$fh = gsl_fopen("rng", 'r');
is(gsl_rng_fread($fh, $rng),0);
is(gsl_rng_get($rng), gsl_rng_get($self->{rng}));
ok_status(gsl_fclose($fh));
}
Test::Class->runtests;
Jump to Line
Something went wrong with that request. Please try again.