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test_parsers.py
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from io import StringIO
from pymantic.parsers import (
jsonld_parser,
nquads_parser,
ntriples_parser,
turtle_parser,
)
from pymantic.primitives import Graph, Literal, NamedNode, Quad, Triple
def test_parse_ntriples_named_nodes():
test_ntriples = """<http://example.com/objects/1> <http://example.com/predicates/1> <http://example.com/objects/2> .
<http://example.com/objects/2> <http://example.com/predicates/2> <http://example.com/objects/1> .
"""
g = Graph()
ntriples_parser.parse(StringIO(test_ntriples), g)
assert len(g) == 2
assert (
Triple(
NamedNode("http://example.com/objects/1"),
NamedNode("http://example.com/predicates/1"),
NamedNode("http://example.com/objects/2"),
)
in g
)
assert (
Triple(
NamedNode("http://example.com/objects/2"),
NamedNode("http://example.com/predicates/2"),
NamedNode("http://example.com/objects/1"),
)
in g
)
def test_parse_ntriples_bare_literals():
test_ntriples = """<http://example.com/objects/1> <http://example.com/predicates/1> "Foo" .
<http://example.com/objects/2> <http://example.com/predicates/2> "Bar" .
"""
g = Graph()
ntriples_parser.parse(StringIO(test_ntriples), g)
assert len(g) == 2
assert (
Triple(
NamedNode("http://example.com/objects/1"),
NamedNode("http://example.com/predicates/1"),
Literal("Foo"),
)
in g
)
assert (
Triple(
NamedNode("http://example.com/objects/2"),
NamedNode("http://example.com/predicates/2"),
Literal("Bar"),
)
in g
)
def test_parse_ntriples_language_literals():
test_ntriples = """<http://example.com/objects/1> <http://example.com/predicates/1> "Foo"@en-US .
<http://example.com/objects/2> <http://example.com/predicates/2> "Bar"@fr .
"""
g = Graph()
ntriples_parser.parse(StringIO(test_ntriples), g)
assert len(g) == 2
assert (
Triple(
NamedNode("http://example.com/objects/1"),
NamedNode("http://example.com/predicates/1"),
Literal("Foo", language="en-US"),
)
in g
)
assert (
Triple(
NamedNode("http://example.com/objects/2"),
NamedNode("http://example.com/predicates/2"),
Literal("Bar", language="fr"),
)
in g
)
def test_parse_ntriples_datatyped_literals():
test_ntriples = """<http://example.com/objects/1> <http://example.com/predicates/1> "Foo"^^<http://www.w3.org/2001/XMLSchema#string> .
<http://example.com/objects/2> <http://example.com/predicates/2> "9.99"^^<http://www.w3.org/2001/XMLSchema#decimal> .
"""
g = Graph()
ntriples_parser.parse(StringIO(test_ntriples), g)
assert len(g) == 2
assert (
Triple(
NamedNode("http://example.com/objects/1"),
NamedNode("http://example.com/predicates/1"),
Literal(
"Foo", datatype=NamedNode("http://www.w3.org/2001/XMLSchema#string")
),
)
in g
)
assert (
Triple(
NamedNode("http://example.com/objects/2"),
NamedNode("http://example.com/predicates/2"),
Literal(
"9.99", datatype=NamedNode("http://www.w3.org/2001/XMLSchema#decimal")
),
)
in g
)
def test_parse_ntriples_mixed_literals():
test_ntriples = """<http://example.com/objects/1> <http://example.com/predicates/1> "Foo"@en-US .
<http://example.com/objects/2> <http://example.com/predicates/2> "9.99"^^<http://www.w3.org/2001/XMLSchema#decimal> .
"""
g = Graph()
ntriples_parser.parse(StringIO(test_ntriples), g)
assert len(g) == 2
assert (
Triple(
NamedNode("http://example.com/objects/1"),
NamedNode("http://example.com/predicates/1"),
Literal("Foo", language="en-US"),
)
in g
)
assert (
Triple(
NamedNode("http://example.com/objects/2"),
NamedNode("http://example.com/predicates/2"),
Literal(
"9.99", datatype=NamedNode("http://www.w3.org/2001/XMLSchema#decimal")
),
)
in g
)
def test_parse_ntriples_bnodes():
test_ntriples = """<http://example.com/objects/1> <http://example.com/predicates/1> _:A1 .
_:A1 <http://example.com/predicates/2> <http://example.com/objects/1> .
"""
g = Graph()
ntriples_parser.parse(StringIO(test_ntriples), g)
assert len(g) == 2
# assert Triple(NamedNode('http://example.com/objects/1'),
# NamedNode('http://example.com/predicates/1'),
# NamedNode('http://example.com/objects/2')) in g
# assert Triple(NamedNode('http://example.com/objects/2'),
# NamedNode('http://example.com/predicates/2'),
# NamedNode('http://example.com/objects/1')) in g
def test_parse_nquads_named_nodes():
test_nquads = """<http://example.com/objects/1> <http://example.com/predicates/1> <http://example.com/objects/2> <http://example.com/graphs/1> .
<http://example.com/objects/2> <http://example.com/predicates/2> <http://example.com/objects/1> <http://example.com/graphs/1> .
"""
g = Graph()
nquads_parser.parse(StringIO(test_nquads), g)
assert len(g) == 2
assert (
Quad(
NamedNode("http://example.com/objects/1"),
NamedNode("http://example.com/predicates/1"),
NamedNode("http://example.com/objects/2"),
NamedNode("http://example.com/graphs/1"),
)
in g
)
assert (
Quad(
NamedNode("http://example.com/objects/2"),
NamedNode("http://example.com/predicates/2"),
NamedNode("http://example.com/objects/1"),
NamedNode("http://example.com/graphs/1"),
)
in g
)
def test_parse_turtle_example_1():
ttl = """@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix ex: <http://example.org/stuff/1.0/> .
<http://www.w3.org/TR/rdf-syntax-grammar>
dc:title "RDF/XML Syntax Specification (Revised)" ;
ex:editor [
ex:fullname "Dave Beckett";
ex:homePage <http://purl.org/net/dajobe/>
] ."""
g = Graph()
turtle_parser.parse(ttl, g)
assert len(g) == 4
def test_jsonld_basic():
import json
jsonld = """[{
"@id": "http://example.com/id1",
"@type": ["http://example.com/t1"],
"http://example.com/term1": ["v1"],
"http://example.com/term2": [{"@value": "v2", "@type": "http://example.com/t2"}],
"http://example.com/term3": [{"@value": "v3", "@language": "en"}],
"http://example.com/term4": [4],
"http://example.com/term5": [50, 51]
}]
"""
g = Graph()
jsonld_parser.parse_json(json.loads(jsonld), g)
assert len(g) == 7