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import unittest
import rdflib # needed for eval(repr(...)) below
from rdflib.term import Literal, URIRef, _XSD_DOUBLE, bind, _XSD_BOOLEAN
from six import integer_types, PY3, string_types
def uformat(s):
if PY3:
return s.replace("u'", "'")
return s
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)
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, integer_types))
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")),
uformat("rdflib.term.Literal(u'foo')"))
def testOmitsMissingDatatype(self):
self.assertEqual(repr(Literal("foo", lang='en')),
uformat("rdflib.term.Literal(u'foo', lang='en')"))
def testOmitsMissingLang(self):
self.assertEqual(
repr(Literal("foo", datatype=URIRef('http://example.com/'))),
uformat("rdflib.term.Literal(u'foo', datatype=rdflib.term.URIRef(u'http://example.com/'))"))
def testSubclassNameAppearsInRepr(self):
class MyLiteral(Literal):
pass
x = MyLiteral(u"foo")
self.assertEqual(repr(x), uformat("MyLiteral(u'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(DeprecationWarning)
self.assertFalse(test_value.value)
test_value = Literal("10",datatype = _XSD_BOOLEAN)
self.assertRaises(DeprecationWarning)
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, string_types, 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)
if __name__ == "__main__":
unittest.main()
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