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import sys
import unittest
from io import BytesIO, StringIO, UnsupportedOperation
from tempfile import NamedTemporaryFile, TemporaryFile
from pyoxigraph import (
Literal,
NamedNode,
Quad,
QueryBoolean,
QueryResultsFormat,
QuerySolutions,
RdfFormat,
parse,
parse_query_results,
serialize,
)
EXAMPLE_TRIPLE = Quad(
NamedNode("http://example.com/foo"),
NamedNode("http://example.com/p"),
Literal("éù"),
)
EXAMPLE_QUAD = Quad(
NamedNode("http://example.com/foo"),
NamedNode("http://example.com/p"),
Literal("1"),
NamedNode("http://example.com/g"),
)
class TestParse(unittest.TestCase):
def test_parse_file(self) -> None:
with NamedTemporaryFile(suffix=".ttl") as fp:
fp.write('<foo> <p> "éù" .'.encode())
fp.flush()
self.assertEqual(
list(parse(path=fp.name, base_iri="http://example.com/")),
[EXAMPLE_TRIPLE],
)
def test_parse_not_existing_file(self) -> None:
with self.assertRaises(IOError) as _:
parse(path="/tmp/not-existing-oxigraph-file.ttl", format=RdfFormat.TURTLE)
def test_parse_str(self) -> None:
self.assertEqual(
list(
parse(
'<foo> <p> "éù" .',
RdfFormat.TURTLE,
base_iri="http://example.com/",
)
),
[EXAMPLE_TRIPLE],
)
def test_parse_bytes(self) -> None:
self.assertEqual(
list(
parse(
'<foo> <p> "éù" .'.encode(),
RdfFormat.TURTLE,
base_iri="http://example.com/",
)
),
[EXAMPLE_TRIPLE],
)
def test_parse_str_io(self) -> None:
self.assertEqual(
list(
parse(
StringIO('<foo> <p> "éù" .'),
RdfFormat.TURTLE,
base_iri="http://example.com/",
)
),
[EXAMPLE_TRIPLE],
)
def test_parse_long_str_io(self) -> None:
self.assertEqual(
list(
parse(
StringIO('<foo> <p> "éù" .\n' * 1024),
RdfFormat.TURTLE,
base_iri="http://example.com/",
)
),
[EXAMPLE_TRIPLE] * 1024,
)
def test_parse_bytes_io(self) -> None:
self.assertEqual(
list(
parse(
BytesIO('<foo> <p> "éù" .'.encode()),
RdfFormat.TURTLE,
base_iri="http://example.com/",
)
),
[EXAMPLE_TRIPLE],
)
def test_parse_io_error(self) -> None:
with self.assertRaises(UnsupportedOperation) as _, TemporaryFile("wb") as fp:
list(parse(fp, RdfFormat.N_TRIPLES))
def test_parse_quad(self) -> None:
self.assertEqual(
list(
parse(
'<g> { <foo> <p> "1" }',
RdfFormat.TRIG,
base_iri="http://example.com/",
)
),
[EXAMPLE_QUAD],
)
def test_parse_syntax_error(self) -> None:
with NamedTemporaryFile() as fp:
fp.write(b"@base <http://example.com/> .\n")
fp.write(b'<foo> "p" "1"')
fp.flush()
with self.assertRaises(SyntaxError) as ctx:
list(parse(path=fp.name, format=RdfFormat.TURTLE))
self.assertEqual(ctx.exception.filename, fp.name)
self.assertEqual(ctx.exception.lineno, 2)
self.assertEqual(ctx.exception.offset, 7)
if sys.version_info >= (3, 10):
self.assertEqual(ctx.exception.end_lineno, 2)
self.assertEqual(ctx.exception.end_offset, 10)
def test_parse_without_named_graphs(self) -> None:
with self.assertRaises(SyntaxError) as _:
list(
parse(
'<g> { <foo> <p> "1" }',
RdfFormat.TRIG,
base_iri="http://example.com/",
without_named_graphs=True,
)
)
def test_parse_rename_blank_nodes(self) -> None:
self.assertNotEqual(
list(
parse(
'_:s <http://example.com/p> "o" .',
RdfFormat.N_TRIPLES,
rename_blank_nodes=True,
)
),
list(
parse(
'_:s <http://example.com/p> "o" .',
RdfFormat.N_TRIPLES,
rename_blank_nodes=True,
)
),
)
def test_parse_lenient(self) -> None:
self.assertEqual(
serialize(
parse('<foo> <p> "a"@abcdefghijklmnop .', RdfFormat.TURTLE, lenient=True), format=RdfFormat.N_TRIPLES
),
b'<foo> <p> "a"@abcdefghijklmnop .\n',
)
class TestSerialize(unittest.TestCase):
def test_serialize_to_bytes(self) -> None:
self.assertEqual(
(serialize([EXAMPLE_TRIPLE.triple], None, RdfFormat.TURTLE) or b"").decode(),
'<http://example.com/foo> <http://example.com/p> "éù" .\n',
)
def test_serialize_to_bytes_io(self) -> None:
output = BytesIO()
serialize([EXAMPLE_TRIPLE.triple], output, RdfFormat.TURTLE)
self.assertEqual(
output.getvalue().decode(),
'<http://example.com/foo> <http://example.com/p> "éù" .\n',
)
def test_serialize_to_file(self) -> None:
with NamedTemporaryFile(suffix=".ttl") as fp:
serialize([EXAMPLE_TRIPLE], fp.name)
self.assertEqual(
fp.read().decode(),
'<http://example.com/foo> <http://example.com/p> "éù" .\n',
)
def test_serialize_io_error(self) -> None:
with self.assertRaises(UnsupportedOperation) as _, TemporaryFile("rb") as fp:
serialize([EXAMPLE_TRIPLE], fp, RdfFormat.TURTLE)
def test_serialize_quad(self) -> None:
output = BytesIO()
serialize([EXAMPLE_QUAD], output, RdfFormat.TRIG)
self.assertEqual(
output.getvalue(),
b'<http://example.com/g> {\n\t<http://example.com/foo> <http://example.com/p> "1" .\n}\n',
)
class TestParseQuerySolutions(unittest.TestCase):
def test_parse_file(self) -> None:
with NamedTemporaryFile(suffix=".tsv") as fp:
fp.write(b'?s\t?p\t?o\n<http://example.com/s>\t<http://example.com/s>\t"1"\n')
fp.flush()
r = parse_query_results(path=fp.name)
self.assertIsInstance(r, QuerySolutions)
results = list(r) # type: ignore[arg-type]
self.assertEqual(results[0]["s"], NamedNode("http://example.com/s"))
self.assertEqual(results[0][2], Literal("1"))
def test_parse_not_existing_file(self) -> None:
with self.assertRaises(IOError) as _:
parse_query_results(path="/tmp/not-existing-oxigraph-file.ttl", format=QueryResultsFormat.JSON)
def test_parse_str(self) -> None:
result = parse_query_results("true", QueryResultsFormat.TSV)
self.assertIsInstance(result, QueryBoolean)
self.assertTrue(result)
def test_parse_bytes(self) -> None:
result = parse_query_results(b"false", QueryResultsFormat.TSV)
self.assertIsInstance(result, QueryBoolean)
self.assertFalse(result)
def test_parse_str_io(self) -> None:
result = parse_query_results("true", QueryResultsFormat.TSV)
self.assertIsInstance(result, QueryBoolean)
self.assertTrue(result)
def test_parse_bytes_io(self) -> None:
result = parse_query_results(BytesIO(b"false"), QueryResultsFormat.TSV)
self.assertIsInstance(result, QueryBoolean)
self.assertFalse(result)
def test_parse_io_error(self) -> None:
with self.assertRaises(UnsupportedOperation) as _, TemporaryFile("wb") as fp:
parse_query_results(fp, QueryResultsFormat.XML)
def test_parse_syntax_error_json(self) -> None:
with NamedTemporaryFile() as fp:
fp.write(b"{]")
fp.flush()
with self.assertRaises(SyntaxError) as ctx:
list(parse_query_results(path=fp.name, format=QueryResultsFormat.JSON)) # type: ignore[arg-type]
self.assertEqual(ctx.exception.filename, fp.name)
self.assertEqual(ctx.exception.lineno, 1)
self.assertEqual(ctx.exception.offset, 2)
if sys.version_info >= (3, 10):
self.assertEqual(ctx.exception.end_lineno, 1)
self.assertEqual(ctx.exception.end_offset, 3)
def test_parse_syntax_error_tsv(self) -> None:
with NamedTemporaryFile() as fp:
fp.write(b"?a\t?test\n")
fp.write(b"1\t<foo >\n")
fp.flush()
with self.assertRaises(SyntaxError) as ctx:
list(parse_query_results(path=fp.name, format=QueryResultsFormat.TSV)) # type: ignore[arg-type]
self.assertEqual(ctx.exception.filename, fp.name)
self.assertEqual(ctx.exception.lineno, 2)
self.assertEqual(ctx.exception.offset, 3)
if sys.version_info >= (3, 10):
self.assertEqual(ctx.exception.end_lineno, 2)
self.assertEqual(ctx.exception.end_offset, 9)
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