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import itertools
import os
from test import TEST_DIR
from urllib.error import URLError
import pytest
from rdflib.graph import ConjunctiveGraph, Graph
from rdflib.plugins.parsers.notation3 import BadSyntax, exponent_syntax
from rdflib.term import Literal, URIRef
test_data = """
# Definitions of terms describing the n3 model
#
@keywords a.
@prefix n3: <#>.
@prefix log: <log.n3#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix : <#> .
@forAll :s, :p, :x, :y, :z.
n3:Statement a rdf:Class .
n3:StatementSet a rdf:Class .
n3:includes a rdfs:Property . # Cf rdf:li
n3:predicate a rdf:Property; rdfs:domain n3:statement .
n3:subject a rdf:Property; rdfs:domain n3:statement .
n3:object a rdf:Property; rdfs:domain n3:statement .
n3:context a rdf:Property; rdfs:domain n3:statement;
rdfs:range n3:StatementSet .
########### Rules
{ :x :p :y . } log:means { [
n3:subject :x;
n3:predicate :p;
n3:object :y ] a log:Truth}.
# Needs more thought ... ideally, we have the implcit AND rules of
# juxtaposition (introduction and elimination)
{
{
{ :x n3:includes :s. } log:implies { :y n3:includes :s. } .
} forall :s1 .
} log:implies { :x log:implies :y } .
{
{
{ :x n3:includes :s. } log:implies { :y n3:includes :s. } .
} forall :s1
} log:implies { :x log:implies :y } .
# I think n3:includes has to be axiomatic builtin. - unless you go to syntax description.
# syntax.n3?
"""
class TestN3Case:
def test_base_cumulative(self):
"""
Test that the n3 parser supports base declarations
This is issue #22
"""
input = """
@prefix : <http://example.com/> .
# default base
<foo> :name "Foo" .
# change it
@base <http://example.com/doc/> .
<bar> :name "Bar" .
# and change it more - they are cumulative
@base <doc2/> .
<bing> :name "Bing" .
# unless abosulute
@base <http://test.com/> .
<bong> :name "Bong" .
"""
g = Graph()
g.parse(data=input, format="n3")
print(list(g))
assert (None, None, Literal("Foo")) in g
assert (URIRef("http://example.com/doc/bar"), None, None) in g
assert (URIRef("http://example.com/doc/doc2/bing"), None, None) in g
assert (URIRef("http://test.com/bong"), None, None) in g
def test_base_explicit(self):
"""
Test that the n3 parser supports resolving relative URIs
and that base will override
"""
input = """
@prefix : <http://example.com/> .
# default base
<foo> :name "Foo" .
# change it
@base <http://example.com/doc/> .
<bar> :name "Bar" .
"""
g = Graph()
g.parse(data=input, publicID="http://blah.com/", format="n3")
print(list(g))
assert (URIRef("http://blah.com/foo"), None, Literal("Foo")) in g
assert (URIRef("http://example.com/doc/bar"), None, None) in g
def test_base_serialize(self):
g = Graph()
g.add(
(
URIRef("http://example.com/people/Bob"),
URIRef("urn:knows"),
URIRef("http://example.com/people/Linda"),
)
)
s = g.serialize(base="http://example.com/", format="n3", encoding="latin-1")
assert b"<people/Bob>" in s
g2 = ConjunctiveGraph()
g2.parse(data=s, publicID="http://example.com/", format="n3")
assert list(g) == list(g2)
def test_issue23(self):
input = """<http://example.com/article1> <http://example.com/title> "this word is in \\u201Cquotes\\u201D"."""
g = Graph()
g.parse(data=input, format="n3")
# Note difference in case of hex code, cwm allows lower-case
input = """<http://example.com/article1> <http://example.com/title> "this word is in \\u201cquotes\\u201d"."""
g.parse(data=input, format="n3")
def test_issue29(self):
input = """@prefix foo-bar: <http://example.org/> .
foo-bar:Ex foo-bar:name "Test" . """
g = Graph()
g.parse(data=input, format="n3")
def test_issue68(self):
input = """@prefix : <http://some.url/pome#>.\n\n:Brecon a :Place;\n\t:hasLord\n\t\t:Bernard_of_Neufmarch\xc3\xa9 .\n """
g = Graph()
g.parse(data=input, format="n3")
def test_issue156(self):
"""
Make sure n3 parser does not choke on UTF-8 BOM
"""
g = Graph()
n3_path = os.path.relpath(os.path.join(TEST_DIR, "data/issue156.n3", os.curdir))
g.parse(n3_path, format="n3")
def test_issue999(self):
"""
Make sure the n3 parser does recognize exponent and leading dot in ".171e-11"
"""
data = """
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
<http://qudt.org/vocab/unit/MilliM-PER-YR>
a <http://qudt.org/schema/qudt/Unit> ;
<http://qudt.org/schema/qudt/conversionMultiplier> .171e-11 ;
<http://qudt.org/schema/qudt/conversionOffset> 0e+00 ;
<http://qudt.org/schema/qudt/description> "0.001-fold of the SI base unit metre divided by the unit year" ;
<http://qudt.org/schema/qudt/hasQuantityKind> <http://qudt.org/vocab/quantitykind/Velocity> ;
<http://qudt.org/schema/qudt/iec61360Code> "0112/2///62720#UAA868" ;
<http://qudt.org/schema/qudt/uneceCommonCode> "H66" ;
rdfs:isDefinedBy <http://qudt.org/2.1/vocab/unit> ;
rdfs:isDefinedBy <http://qudt.org/vocab/unit> ;
rdfs:label "MilliM PER YR" ;
<http://www.w3.org/2004/02/skos/core#prefLabel> "millimetre per year" ;
.
"""
g = Graph()
g.parse(data=data, format="n3")
g.parse(data=data, format="turtle")
def test_dot_in_prefix(self):
g = Graph()
g.parse(
data="@prefix a.1: <http://example.org/> .\n a.1:cake <urn:x> <urn:y> . \n",
format="n3",
)
def test_model(self):
g = ConjunctiveGraph()
g.parse(data=test_data, format="n3")
i = 0
for s, p, o in g:
if isinstance(s, Graph):
i += 1
assert i == 3
assert len(list(g.contexts())) == 13
g.close()
def test_quoted_serialization(self):
g = ConjunctiveGraph()
g.parse(data=test_data, format="n3")
g.serialize(format="n3")
def test_parse(self):
g = ConjunctiveGraph()
try:
g.parse(
"http://groups.csail.mit.edu/dig/2005/09/rein/examples/troop42-policy.n3",
format="n3",
)
except URLError:
pytest.skip("No network to retrieve the information, skipping test")
def test_single_quoted_literals(self):
test_data = [
"""@prefix : <#> . :s :p 'o' .""",
"""@prefix : <#> . :s :p '''o''' .""",
]
for data in test_data:
# N3 doesn't accept single quotes around string literals
g = ConjunctiveGraph()
with pytest.raises(BadSyntax):
g.parse(data=data, format="n3")
g = ConjunctiveGraph()
g.parse(data=data, format="turtle")
assert len(g) == 1
for _, _, o in g:
assert o == Literal("o")
def test_empty_prefix(self):
# this is issue https://github.com/RDFLib/rdflib/issues/312
g1 = Graph()
g1.parse(data=":a :b :c .", format="n3")
g2 = Graph()
g2.parse(data="@prefix : <#> . :a :b :c .", format="n3")
assert set(g1) == set(
g2
), "Document with declared empty prefix must match default #"
class TestRegularExpressions:
def test_exponents(self):
signs = ("", "+", "-")
mantissas = (
"1",
"1.",
".1",
"12",
"12.",
"1.2",
".12",
"123",
"123.",
"12.3",
"1.23",
".123",
)
es = "eE"
exps = ("1", "12", "+1", "-1", "+12", "-12")
for parts in itertools.product(signs, mantissas, es, exps):
expstring = "".join(parts)
assert exponent_syntax.match(expstring)
def test_invalid_exponents(self):
# Add test cases as needed
invalid = (".e1",)
for expstring in invalid:
assert not exponent_syntax.match(expstring)
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