Added simple SPARQL parsing tests (#55).

t/parser-sparql.t

@@ -0,0 +1,83 @@
+use v5.14;
+use autodie;
+use utf8;
+use Test::Modern;
+use Test::Exception;
+use FindBin qw($Bin);
+use File::Glob qw(bsd_glob);
+use File::Spec;
+
+use Attean;
+use Attean::RDF;
+use AtteanX::SPARQL::Constants;
+use Type::Tiny::Role;
+
+{
+	my $parser	= Attean->get_parser('SPARQL')->new();
+	isa_ok($parser, 'AtteanX::Parser::SPARQL');
+	my $type	= $parser->handled_type;
+	can_ok($type, 'role');
+	is($type->role, 'Attean::Algebra');
+}
+
+{
+	my $data	= "ASK {}";
+	open(my $fh, '<', \$data);
+	my $parser	= Attean->get_parser('SPARQL')->new();
+	my $iter	= $parser->parse_iter_from_io($fh);
+	does_ok($iter, 'Attean::API::Iterator');
+	my $a		= $iter->next;
+	does_ok($a, 'Attean::API::Algebra');
+	isa_ok($a, 'Attean::Algebra::Ask');
+}
+
+{
+	my $map		= URI::NamespaceMap->new();
+	my $parser	= Attean->get_parser('SPARQL')->new( namespaces => $map );
+	my $content	= <<'END';
+PREFIX ex: <http://example.org/>
+PREFIX foaf: <http://xmlns.com/foaf/0.1/>
+SELECT * WHERE {
+	?s a foaf:Person .
+}
+END
+	my ($a)	= $parser->parse_list_from_bytes($content);
+	is_deeply([sort $map->list_prefixes], [qw(ex foaf)]);
+	my $foaf	= $map->namespace_uri('foaf');
+	isa_ok($foaf, 'URI::Namespace');
+	is($foaf->as_string, 'http://xmlns.com/foaf/0.1/');
+	isa_ok($a, 'Attean::Algebra::Project')
+}
+
+subtest 'escaping' => sub {
+	my $turtle	= q[ASK { <s> ex:p "\\"", '\\'', '\\u706b\\U0000661F' \\u007d];
+	open(my $fh, '<:encoding(UTF-8)', \$turtle);
+	my $l		= AtteanX::Parser::SPARQLLex->new();
+	my $iter	= $l->parse_iter_from_io($fh);
+
+	expect($iter->next, KEYWORD, ['ASK']);
+	expect($iter->next, LBRACE, ['{'],);
+	expect($iter->next, IRI, ['s'], 'subject');
+	expect($iter->next, PREFIXNAME, ['ex:', 'p'], 'predicate');
+	expect($iter->next, STRING1D, ['"'], 'double quote');
+	expect($iter->next, COMMA, [',']);
+	expect($iter->next, STRING1S, ["'"], 'single quote');
+	expect($iter->next, COMMA, [',']);
+	expect($iter->next, STRING1S, ["火星"], 'unicode \\u and \\U escapes');
+	expect($iter->next, RBRACE, ['}'], 'escaped closing brace');
+};
+
+
+done_testing();
+
+sub expect {
+	my $token	= shift;
+	my $type	= shift;
+	my $values	= shift;
+	my $name	= shift // '';
+	if (length($name)) {
+		$name	= "${name}: ";
+	}
+	is($token->type, $type, "${name}token type");
+	is_deeply($token->args, $values, "${name}token values");
+}