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from decimal import Decimal
import unittest
import datetime
import rdflib # needed for eval(repr(...)) below
from rdflib.term import Literal, URIRef, _XSD_DOUBLE, bind, _XSD_BOOLEAN
from rdflib.namespace import XSD
class TestLiteral(unittest.TestCase):
def setUp(self):
pass
def test_repr_apostrophe(self):
a = rdflib.Literal("'")
b = eval(repr(a))
self.assertEqual(a, b)
def test_repr_quote(self):
a = rdflib.Literal('"')
b = eval(repr(a))
self.assertEqual(a, b)
def test_backslash(self):
d = r"""
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:foo="http://example.org/foo#">
<rdf:Description>
<foo:bar>a\b</foo:bar>
</rdf:Description>
</rdf:RDF>
"""
g = rdflib.Graph()
g.parse(data=d, format="xml")
a = rdflib.Literal("a\\b")
b = list(g.objects())[0]
self.assertEqual(a, b)
def test_literal_from_bool(self):
l = rdflib.Literal(True)
self.assertEqual(l.datatype, rdflib.XSD["boolean"])
class TestNew(unittest.TestCase):
def testCantPassLangAndDatatype(self):
self.assertRaises(
TypeError, Literal, "foo", lang="en", datatype=URIRef("http://example.com/")
)
def testFromOtherLiteral(self):
l = Literal(1)
l2 = Literal(l)
self.assertTrue(isinstance(l.value, int))
self.assertTrue(isinstance(l2.value, int))
# change datatype
l = Literal("1")
l2 = Literal(l, datatype=rdflib.XSD.integer)
self.assertTrue(isinstance(l2.value, int))
def testDatatypeGetsAutoURIRefConversion(self):
# drewp disapproves of this behavior, but it should be
# represented in the tests
x = Literal("foo", datatype="http://example.com/")
self.assertTrue(isinstance(x.datatype, URIRef))
x = Literal("foo", datatype=Literal("pennies"))
self.assertEqual(x.datatype, URIRef("pennies"))
class TestRepr(unittest.TestCase):
def testOmitsMissingDatatypeAndLang(self):
self.assertEqual(repr(Literal("foo")), "rdflib.term.Literal('foo')")
def testOmitsMissingDatatype(self):
self.assertEqual(
repr(Literal("foo", lang="en")),
"rdflib.term.Literal('foo', lang='en')",
)
def testOmitsMissingLang(self):
self.assertEqual(
repr(Literal("foo", datatype=URIRef("http://example.com/"))),
"rdflib.term.Literal('foo', datatype=rdflib.term.URIRef('http://example.com/'))",
)
def testSubclassNameAppearsInRepr(self):
class MyLiteral(Literal):
pass
x = MyLiteral("foo")
self.assertEqual(repr(x), "MyLiteral('foo')")
class TestDoubleOutput(unittest.TestCase):
def testNoDanglingPoint(self):
"""confirms the fix for https://github.com/RDFLib/rdflib/issues/237"""
vv = Literal("0.88", datatype=_XSD_DOUBLE)
out = vv._literal_n3(use_plain=True)
self.assertTrue(out in ["8.8e-01", "0.88"], out)
class TestParseBoolean(unittest.TestCase):
"""confirms the fix for https://github.com/RDFLib/rdflib/issues/913"""
def testTrueBoolean(self):
test_value = Literal("tRue", datatype=_XSD_BOOLEAN)
self.assertTrue(test_value.value)
test_value = Literal("1", datatype=_XSD_BOOLEAN)
self.assertTrue(test_value.value)
def testFalseBoolean(self):
test_value = Literal("falsE", datatype=_XSD_BOOLEAN)
self.assertFalse(test_value.value)
test_value = Literal("0", datatype=_XSD_BOOLEAN)
self.assertFalse(test_value.value)
def testNonFalseBoolean(self):
test_value = Literal("abcd", datatype=_XSD_BOOLEAN)
self.assertRaises(UserWarning)
self.assertFalse(test_value.value)
test_value = Literal("10", datatype=_XSD_BOOLEAN)
self.assertRaises(UserWarning)
self.assertFalse(test_value.value)
class TestBindings(unittest.TestCase):
def testBinding(self):
class a:
def __init__(self, v):
self.v = v[3:-3]
def __str__(self):
return "<<<%s>>>" % self.v
dtA = rdflib.URIRef("urn:dt:a")
bind(dtA, a)
va = a("<<<2>>>")
la = Literal(va, normalize=True)
self.assertEqual(la.value, va)
self.assertEqual(la.datatype, dtA)
la2 = Literal("<<<2>>>", datatype=dtA)
self.assertTrue(isinstance(la2.value, a))
self.assertEqual(la2.value.v, va.v)
class b:
def __init__(self, v):
self.v = v[3:-3]
def __str__(self):
return "B%s" % self.v
dtB = rdflib.URIRef("urn:dt:b")
bind(dtB, b, None, lambda x: "<<<%s>>>" % x)
vb = b("<<<3>>>")
lb = Literal(vb, normalize=True)
self.assertEqual(lb.value, vb)
self.assertEqual(lb.datatype, dtB)
def testSpecificBinding(self):
def lexify(s):
return "--%s--" % s
def unlexify(s):
return s[2:-2]
datatype = rdflib.URIRef("urn:dt:mystring")
# Datatype-specific rule
bind(datatype, str, unlexify, lexify, datatype_specific=True)
s = "Hello"
normal_l = Literal(s)
self.assertEqual(str(normal_l), s)
self.assertEqual(normal_l.toPython(), s)
self.assertEqual(normal_l.datatype, None)
specific_l = Literal("--%s--" % s, datatype=datatype)
self.assertEqual(str(specific_l), lexify(s))
self.assertEqual(specific_l.toPython(), s)
self.assertEqual(specific_l.datatype, datatype)
class TestXsdLiterals(unittest.TestCase):
def test_make_literals(self):
"""
Tests literal construction.
"""
inputs = [
# these literals do not get converted to Python types
("ABCD", XSD.integer, None),
("ABCD", XSD.gYear, None),
("-10000", XSD.gYear, None),
("-1921-00", XSD.gYearMonth, None),
("1921-00", XSD.gMonthDay, None),
("1921-13", XSD.gMonthDay, None),
("-1921-00", XSD.gMonthDay, None),
("10", XSD.gDay, None),
("-1", XSD.gDay, None),
("0000", XSD.gYear, None),
("0000-00-00", XSD.date, None),
("NOT A VALID HEX STRING", XSD.hexBinary, None),
("NOT A VALID BASE64 STRING", XSD.base64Binary, None),
# these literals get converted to python types
("1921-05-01", XSD.date, datetime.date),
("1921-05-01T00:00:00", XSD.dateTime, datetime.datetime),
("1921-05", XSD.gYearMonth, datetime.date),
("0001-01", XSD.gYearMonth, datetime.date),
("0001-12", XSD.gYearMonth, datetime.date),
("2002-01", XSD.gYearMonth, datetime.date),
("9999-01", XSD.gYearMonth, datetime.date),
("9999-12", XSD.gYearMonth, datetime.date),
("1921", XSD.gYear, datetime.date),
("2000", XSD.gYear, datetime.date),
("0001", XSD.gYear, datetime.date),
("9999", XSD.gYear, datetime.date),
("1982", XSD.gYear, datetime.date),
("2002", XSD.gYear, datetime.date),
("1921-05-01T00:00:00+00:30", XSD.dateTime, datetime.datetime),
("1921-05-01T00:00:00-00:30", XSD.dateTime, datetime.datetime),
("abcdef0123", XSD.hexBinary, bytes),
("", XSD.hexBinary, bytes),
("UkRGTGli", XSD.base64Binary, bytes),
("", XSD.base64Binary, bytes),
("0.0000000000000000000000000000001", XSD.decimal, Decimal),
("0.1", XSD.decimal, Decimal),
("1", XSD.integer, int),
]
self.check_make_literals(inputs)
@unittest.expectedFailure
def test_make_literals_ki(self):
"""
Known issues with literal construction.
"""
inputs = [
("1921-01Z", XSD.gYearMonth, datetime.date),
("1921Z", XSD.gYear, datetime.date),
("1921-00", XSD.gYearMonth, datetime.date),
("1921-05-01Z", XSD.date, datetime.date),
("1921-05-01+00:30", XSD.date, datetime.date),
("1921-05-01+00:30", XSD.date, datetime.date),
("1921-05-01+00:00", XSD.date, datetime.date),
("1921-05-01+00:00", XSD.date, datetime.date),
("1921-05-01T00:00:00Z", XSD.dateTime, datetime.datetime),
("1e-31", XSD.decimal, None), # This is not a valid decimal value
]
self.check_make_literals(inputs)
def check_make_literals(self, inputs):
for literal_pair in inputs:
(lexical, type, value_cls) = literal_pair
with self.subTest(f"testing {literal_pair}"):
literal = Literal(lexical, datatype=type)
if value_cls is not None:
self.assertIsInstance(literal.value, value_cls)
else:
self.assertIsNone(literal.value)
self.assertEqual(lexical, f"{literal}")
if __name__ == "__main__":
unittest.main()
|
