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package Math::GSL::VectorComplex::Test;
use base q{Test::Class};
use Test::More tests => 26;
use Math::GSL::Test qw/:all/;
use Math::GSL qw/:all/;
use Math::GSL::VectorComplex qw/:all/;
use Math::GSL::Complex qw/:all/;
use Math::GSL::Errno qw/:all/;
use Math::GSL::Const qw/:all/;
use Test::Exception;
use Data::Dumper;
use Math::Complex;
use strict;
BEGIN{ gsl_set_error_handler_off(); }
sub make_fixture : Test(setup) {
my $self = shift;
my $z = Math::Complex->make(0,3);
$self->{vector} = Math::GSL::VectorComplex->new([ $z, $z ** 2, 3 ] );
}
sub teardown : Test(teardown) {
unlink 'vector' if -f 'vectorcomplex';
}
sub GSL_VECTOR_COMPLEX_ALLOC : Tests(1) {
my $vec = gsl_vector_complex_alloc(5);
isa_ok($vec, 'Math::GSL::VectorComplex');
}
sub GSL_VECTOR_COMPLEX_CALLOC : Tests(1) {
my $vec = gsl_vector_complex_calloc(5);
isa_ok($vec, 'Math::GSL::VectorComplex');
}
sub GSL_VECTOR_COMPLEX_NEW : Tests(12) {
my $u = Math::GSL::VectorComplex->new(10);
isa_ok($u, 'Math::GSL::VectorComplex');
ok( $u->length == 10, 'length');
isa_ok($u->raw, 'Math::GSL::VectorComplex::gsl_vector_complex');
my $z = Math::Complex->make(0,2);
my $v = Math::GSL::VectorComplex->new([ $z, $z ** 2 ] );
isa_ok($v, 'Math::GSL::VectorComplex');
my @elements = $v->as_list;
map { isa_ok( $_, 'Math::Complex') } @elements;
ok_similar( [ map { Re($_) } @elements ], [ 0, -4 ] );
ok_similar( [ map { Im($_) } @elements ], [ 2, 0 ] );
my $e0 = gsl_vector_complex_get($v->raw,0);
my $abs0 = gsl_complex_abs($e0);
my $arg0 = gsl_complex_arg($e0);
ok_similar( $abs0, 2, "abs of first element: 2 ?= $abs0");
ok_similar( $arg0, $M_PI/2, "arg first element: $arg0 ?=" . $M_PI/2);
my $e1 = gsl_vector_complex_get($v->raw,1);
my $abs1 = gsl_complex_abs($e1);
my $arg1 = gsl_complex_arg($e1);
ok_similar( $abs1, 4, "abs of 2nd element: 4 ?= $abs1");
ok_similar( abs($arg1), $M_PI, "arg of 2nd element: " . abs($arg1) ." ?= $M_PI");
}
sub GSL_VECTOR_COMPLEX_REVERSE : Tests(5) {
my $self = shift;
my $vector = $self->{vector};
ok_status( gsl_vector_complex_reverse($vector->raw), $GSL_SUCCESS, 'vector_complex_reverse' );
my @elements = $vector->as_list;
ok_similar( [ map { Re($_) } @elements ], [ 3, -9, 0 ], 'real parts of vector get reversed');
ok_similar( [ map { Im($_) } @elements ], [ 0, 0, 3 ], 'imag parts of vector get reversed');
my @reversed = $vector->reverse->as_list;
ok_similar( [ map { Re($_) } @reversed ], [ 0, -9, 3 ], 'real parts of vector get reversed');
ok_similar( [ map { Im($_) } @reversed ], [ 3, 0, 0 ], 'imag parts of vector get reversed');
}
sub GSL_VECTOR_COMPLEX_SWAP : Tests(6) {
my $self = shift;
my $y = Math::Complex->make(1,1);
my $z = Math::Complex->make(0,3);
my $v = $self->{vector};
my $w = Math::GSL::VectorComplex->new([ $y , 1 , 3 ]);
ok_status( gsl_vector_complex_swap( $v->raw, $w->raw ) );
ok_similar ( [ map { Re $_ } $v->as_list ],
[ map { Re $_ } $y , 1 , 3 ] );
ok_similar ( [ map { Im $_ } $w->as_list ],
[ map { Im $_ } $z , $z ** 2, 3 ] );
isa_ok( $v->swap( $w ), 'Math::GSL::VectorComplex' );
ok_similar ( [ map { Re $_ } $w->as_list ],
[ map { Re $_ } $y , 1 , 3 ] );
ok_similar ( [ map { Im $_ } $v->as_list ],
[ map { Im $_ } $z , $z ** 2, 3 ] );
}
sub GSL_VECTOR_COMPLEX_SET_GET : Tests {
my $vec = gsl_vector_complex_calloc(5);
my $complex = gsl_complex_rect(2,1);
gsl_vector_complex_set($vec, 0, $complex);
my $result = gsl_complex_rect(5,5);
$result = gsl_vector_complex_get($vec, 0);
isa_ok($result, 'Math::GSL::VectorComplex::gsl_complex');
local $TODO = "don't know why the complex returned gsl_vector_complex_get is not usable";
}
Test::Class->runtests;
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