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#!perl -T
use 5.010;
use strict;
use warnings FATAL => 'all';
use Test::More tests => 22;
use Test::Fatal;
use Statistics::R::REXP::S4;
my $s4 = new_ok('Statistics::R::REXP::S4', [ class => 'foo', package => 'bar' ], 'new symbol' );
is($s4, $s4, 'self equality');
my $s4_2 = Statistics::R::REXP::S4->new(class => 'foo', package => 'bar');
is($s4, $s4_2, 'symbol equality with copy');
is(Statistics::R::REXP::S4->new($s4_2), $s4, 'copy constructor');
## error checking in constructor arguments
like(exception {
Statistics::R::REXP::S4->new(class => [1, 2, 3])
}, qr/Attribute 'class' must be a scalar value/,
'bad class argument');
like(exception {
Statistics::R::REXP::S4->new(1, 2, 3)
}, qr/odd number of elements/,
'odd constructor arguments');
like(exception {
Statistics::R::REXP::S4->new(class => "foo",
package => "bar",
slots => [1, 2, 3])
}, qr/Attribute 'slots' must be a reference to a hash of REXPs/,
'bad slots argument');
like(exception {
Statistics::R::REXP::S4->new(class => 'foo', package => [1, 2, 3])
}, qr/Attribute 'package' must be a scalar value/,
'bad package argument');
my $s4_foo = Statistics::R::REXP::S4->new(class => 'quux', package => 'bar');
isnt($s4, $s4_foo, 'symbol inequality');
is($s4->class, 'foo', 'object class');
is($s4->package, 'bar', 'object package');
is_deeply($s4->slots, {}, 'object slots');
ok(! $s4->is_null, 'is not null');
ok(! $s4->is_vector, 'is not vector');
is($s4 .'', "object of class 'foo' (package bar) with 0 slots",
'symbol text representation');
## attributes
is_deeply($s4->attributes, undef, 'default attributes');
my $s4_attr = Statistics::R::REXP::S4->new(class => 'foo', package => 'bar',
attributes => { foo => 'bar',
x => [40, 41, 42] });
is_deeply($s4_attr->attributes,
{ foo => 'bar', x => [40, 41, 42] }, 'constructed attributes');
my $s4_attr2 = Statistics::R::REXP::S4->new(class => 'foo', package => 'bar',
attributes => { foo => 'bar',
x => [40, 41, 42] });
my $another_sym_attr = Statistics::R::REXP::S4->new(class => 'foo', package => 'bar',
attributes => { foo => 'bar',
x => [40, 42, 42] });
is($s4_attr, $s4_attr2, 'equality considers attributes');
isnt($s4_attr, $s4, 'inequality considers attributes');
isnt($s4_attr, $another_sym_attr, 'inequality considers attributes deeply');
## attributes must be a hash
like(exception {
Statistics::R::REXP::S4->new(attributes => 1)
}, qr/Attribute 'attributes' must be a hash reference/,
'setting non-HASH attributes');
## Perl representation
is_deeply($s4->to_pl,
{class => 'foo', package => 'bar', slots => {}},
'Perl representation');
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