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|
use Test::More;
use Test::JSON;
use strict;
use warnings;
no warnings 'redefine';
use URI::file;
use RDF::Trine qw(statement iri literal variable);
use RDF::Trine::Node;
use_ok( 'RDF::Trine::Iterator::Bindings' );
{
my $iter = RDF::Trine::Iterator::Bindings->new();
is( $iter->next, undef, 'empty iterator' );
}
{
note('simple values');
my @values = (1,2);
my $sub = sub { return shift(@values) };
my $iter = RDF::Trine::Iterator::Bindings->new( $sub );
is( $iter->next, 1 );
is( $iter->next, 2 );
is( $iter->next, undef );
}
{
note('hash values');
my @bindings = (
{ qw( a 1 b 2 ) },
{ qw( b 3 c 4 ) },
);
my $iter = RDF::Trine::Iterator::Bindings->new( sub { return shift(@bindings) } );
my $proj = $iter->project( 'b' );
is_deeply( $proj->next, { b => 2 } );
is_deeply( $proj->next, { b => 3 } );
is( $proj->next, undef );
}
{
note('as_json with empty iterator, no variables');
my $iter = RDF::Trine::Iterator::Bindings->new( [] );
my $expect = '{"head":{"vars":[]},"results":{"bindings":[],"distinct":false,"ordered":false}}';
is_json( $iter->as_json, $expect, 'as_json empty bindings iterator without names' );
}
{
note('as_json with empty iterator, 3 variables');
my $iter = RDF::Trine::Iterator::Bindings->new( [], [qw(a b c)] );
my $expect = '{"head":{"vars":["a", "b", "c"]},"results":{"bindings":[],"distinct":false,"ordered":false}}';
is_json( $iter->as_json, $expect, 'as_json empty bindings iterator with names' );
}
{
my $t1 = statement(variable('subj'), iri('pred1'), literal('foo'));
my $t2 = statement(variable('subj'), iri('pred2'), variable('obj'));
my $pattern = RDF::Trine::Pattern->new($t1, $t2);
my @bindings = (
{ 'subj' => iri('http://example.org/x1') },
{ 'subj' => iri('http://example.org/x2'), 'obj' => literal('bar') },
);
my $iter = RDF::Trine::Iterator::Bindings->new( sub { return shift(@bindings) } );
my $sts = $iter->as_statements($pattern);
my @triples = $sts->get_all;
is(scalar(@triples), 3, 'expected triple count from as_statements with pattern');
ok(
$triples[0]->subsumes(
statement(iri('http://example.org/x1'), iri('pred1'), literal('foo'))
),
'expected triple 1/3'
);
ok(
$triples[1]->subsumes(
statement(iri('http://example.org/x2'), iri('pred1'), literal('foo'))
),
'expected triple 2/3'
);
ok(
$triples[2]->subsumes(
statement(iri('http://example.org/x2'), iri('pred2'), literal('bar'))
),
'expected triple 3/3'
);
}
done_testing();
|
