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from __future__ import annotations
from typing import Any, Optional
from warnings import warn
import pytest
from rdflib import DCTERMS
from rdflib.graph import Graph
from rdflib.namespace import (
FOAF,
OWL,
RDF,
RDFS,
SH,
ClosedNamespace,
DefinedNamespaceMeta,
Namespace,
URIPattern,
)
from rdflib.term import BNode, Literal, URIRef
from test.utils.outcome import OutcomeChecker, OutcomePrimitive
class TestNamespace:
def setup_method(self, method):
self.ns_str = "http://example.com/name/space/"
self.ns = Namespace(self.ns_str)
def test_repr(self):
# NOTE: this assumes ns_str has no characthers that need escaping
assert self.ns_str in f"{self.ns!r}"
assert self.ns == eval(f"{self.ns!r}")
def test_str(self):
assert self.ns_str == f"{self.ns}"
def test_member(self):
assert f"{self.ns_str}a" == f"{self.ns.a}"
def test_dcterms_title(self):
assert DCTERMS.title == URIRef(DCTERMS + "title")
def test_iri(self):
prefix = "http://jörn.loves.encoding.problems/"
ns = Namespace(prefix)
assert ns == str(prefix)
assert ns["jörn"].startswith(ns)
class TestClosedNamespace:
def setup_method(self, method):
self.ns_str = "http://example.com/name/space/"
self.ns = ClosedNamespace(self.ns_str, ["a", "b", "c"])
def test_repr(self):
# NOTE: this assumes ns_str has no characthers that need escaping
assert self.ns_str in f"{self.ns!r}"
@pytest.mark.xfail
def test_repr_ef(self):
"""
This fails because ClosedNamespace repr does not represent the second argument
"""
assert self.ns == eval(f"{self.ns!r}")
def test_str(self):
assert self.ns_str == f"{self.ns}"
def test_member(self):
assert f"{self.ns_str}a" == f"{self.ns.a}"
def test_missing_member(self):
with pytest.raises(AttributeError) as context:
f"{self.ns.missing}"
assert "missing" in f"{context.value}"
class TestURIPattern:
def setup_method(self, method):
self.pattern_str = "http://example.org/%s/%d/resource"
self.pattern = URIPattern(self.pattern_str)
def test_repr(self):
# NOTE: this assumes pattern_str has no characthers that need escaping
assert self.pattern_str in f"{self.pattern!r}"
assert self.pattern == eval(f"{self.pattern!r}")
def test_format(self):
assert "http://example.org/foo/100/resource" == str(self.pattern % ("foo", 100))
class TestNamespacePrefix:
@pytest.mark.parametrize(
"invalid_uri",
[
("<123>"),
('-"-'),
("{}"),
("a|b"),
("1\\2"),
("^"),
],
)
def test_invalid_uri(self, invalid_uri: str) -> None:
g = Graph()
with pytest.raises(ValueError):
g.namespace_manager.compute_qname(invalid_uri)
def test_compute_qname(self):
"""Test sequential assignment of unknown prefixes"""
g = Graph()
assert g.compute_qname(URIRef("http://foo/bar/baz")) == (
"ns1",
URIRef("http://foo/bar/"),
"baz",
)
assert g.compute_qname(URIRef("http://foo/bar#baz")) == (
"ns2",
URIRef("http://foo/bar#"),
"baz",
)
# should skip to ns4 when ns3 is already assigned
g.bind("ns3", URIRef("http://example.org/"))
assert g.compute_qname(URIRef("http://blip/blop")) == (
"ns4",
URIRef("http://blip/"),
"blop",
)
# should return empty qnames correctly
assert g.compute_qname(URIRef("http://foo/bar/")) == (
"ns1",
URIRef("http://foo/bar/"),
"",
)
# should compute qnames of URNs correctly as well
assert g.compute_qname(URIRef("urn:ISSN:0167-6423")) == (
"ns5",
URIRef("urn:ISSN:"),
"0167-6423",
)
assert g.compute_qname(URIRef("urn:ISSN:")) == ("ns5", URIRef("urn:ISSN:"), "")
# should compute qnames with parenthesis correctly
assert g.compute_qname(URIRef("http://foo/bar/name_with_(parenthesis)")) == (
"ns1",
URIRef("http://foo/bar/"),
"name_with_(parenthesis)",
)
def test_reset(self):
data = (
"@prefix a: <http://example.org/a> .\n"
"a: <http://example.org/b> <http://example.org/c> ."
)
graph = Graph().parse(data=data, format="turtle")
for p, n in tuple(graph.namespaces()):
graph.store._Memory__namespace.pop(p)
graph.store._Memory__prefix.pop(n)
graph.namespace_manager.reset()
assert not tuple(graph.namespaces())
u = URIRef("http://example.org/a")
prefix, namespace, name = graph.namespace_manager.compute_qname(
u, generate=True
)
assert namespace != u
def test_reset_preserve_prefixes(self):
data = (
"@prefix a: <http://example.org/a> .\n"
"a: <http://example.org/b> <http://example.org/c> ."
)
graph = Graph().parse(data=data, format="turtle")
graph.namespace_manager.reset()
assert tuple(graph.namespaces())
u = URIRef("http://example.org/a")
prefix, namespace, name = graph.namespace_manager.compute_qname(
u, generate=True
)
assert namespace == u
def test_n3(self):
g = Graph()
g.add(
(
URIRef("http://example.com/foo"),
URIRef("http://example.com/bar"),
URIRef("http://example.com/baz"),
)
)
n3 = g.serialize(format="n3", encoding="latin-1")
# Gunnar disagrees that this is right:
# self.assertTrue("<http://example.com/foo> ns1:bar <http://example.com/baz> ." in n3)
# as this is much prettier, and ns1 is already defined:
assert b"ns1:foo ns1:bar ns1:baz ." in n3
def test_n32(self):
# this test not generating prefixes for subjects/objects
g = Graph()
g.add(
(
URIRef("http://example1.com/foo"),
URIRef("http://example2.com/bar"),
URIRef("http://example3.com/baz"),
)
)
n3 = g.serialize(format="n3", encoding="latin-1")
assert b"<http://example1.com/foo> ns1:bar <http://example3.com/baz> ." in n3
def test_closed_namespace(self):
"""Tests terms both in an out of the ClosedNamespace FOAF"""
def add_not_in_namespace(s):
with pytest.raises(AttributeError):
return FOAF[s]
# a non-existent FOAF property
add_not_in_namespace("blah")
# a deprecated FOAF property
# add_not_in_namespace('firstName')
assert FOAF["firstName"] == URIRef("http://xmlns.com/foaf/0.1/firstName")
warn("DefinedNamespace does not address deprecated properties")
# a property name within the FOAF namespace
assert FOAF.givenName == URIRef("http://xmlns.com/foaf/0.1/givenName")
# namespace can be used as str
assert FOAF.givenName.startswith(FOAF)
def test_contains_method(self):
"""Tests for Namespace.__contains__() methods."""
ref = URIRef("http://www.w3.org/ns/shacl#Info")
assert (
type(SH) is DefinedNamespaceMeta
), f"SH no longer a DefinedNamespaceMeta (instead it is now {type(SH)}, update test."
assert ref in SH, "sh:Info not in SH"
ref = URIRef("http://www.w3.org/2000/01/rdf-schema#label")
assert ref in RDFS, "ClosedNamespace(RDFS) does not include rdfs:label"
ref = URIRef("http://www.w3.org/2000/01/rdf-schema#example")
assert (
ref not in RDFS
), "ClosedNamespace(RDFS) includes out-of-ns member rdfs:example"
ref = URIRef("http://www.w3.org/1999/02/22-rdf-syntax-ns#type")
assert ref in RDF, "RDF does not include rdf:type"
ref = URIRef("http://www.w3.org/1999/02/22-rdf-syntax-ns#_1")
assert ref in RDF, "RDF does not include rdf:_1"
ref = URIRef("http://www.w3.org/2002/07/owl#rational")
assert ref in OWL, "OWL does not include owl:rational"
ref = URIRef("http://www.w3.org/2002/07/owl#real")
assert ref in OWL, "OWL does not include owl:real"
def test_expand_curie_exception_messages(self) -> None:
g = Graph()
with pytest.raises(TypeError) as e:
assert g.namespace_manager.expand_curie(URIRef("urn:example")) is None
assert str(e.value) == "Argument must be a string, not URIRef."
with pytest.raises(TypeError) as e:
assert g.namespace_manager.expand_curie(Literal("rdf:type")) is None
assert str(e.value) == "Argument must be a string, not Literal."
with pytest.raises(TypeError) as e:
assert g.namespace_manager.expand_curie(BNode()) is None
assert str(e.value) == "Argument must be a string, not BNode."
with pytest.raises(TypeError) as e:
assert g.namespace_manager.expand_curie(Graph()) is None # type: ignore[arg-type]
assert str(e.value) == "Argument must be a string, not Graph."
@pytest.mark.parametrize(
["curie", "expected_result"],
[
("ex:tarek", URIRef("urn:example:tarek")),
("ex:", URIRef("urn:example:")),
("ex:a", URIRef("urn:example:a")),
("ex:a:b", URIRef("urn:example:a:b")),
("ex:a:b:c", URIRef("urn:example:a:b:c")),
("ex", ValueError),
("em:tarek", ValueError),
("em:", ValueError),
("em", ValueError),
(":", ValueError),
(":type", ValueError),
("í", ValueError),
(" :", ValueError),
("", ValueError),
("\n", ValueError),
(None, TypeError),
(3, TypeError),
(URIRef("urn:example:"), TypeError),
(BNode(), TypeError),
(Literal("rdf:type"), TypeError),
],
)
def test_expand_curie(
self, curie: Any, expected_result: OutcomePrimitive[URIRef]
) -> None:
g = Graph(bind_namespaces="none")
nsm = g.namespace_manager
nsm.bind("ex", "urn:example:")
checker = OutcomeChecker.from_primitive(expected_result)
result: Optional[URIRef] = None
with checker.context():
result = g.namespace_manager.expand_curie(curie)
checker.check(result)
|
