1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
from io import BytesIO
from rdflib.graph import ConjunctiveGraph
from rdflib.namespace import RDFS
from rdflib.plugins.serializers.rdfxml import XMLSerializer
from rdflib.term import BNode, URIRef
class SerializerTestBase(object):
repeats = 8
def setup_method(self):
graph = ConjunctiveGraph()
graph.parse(data=self.testContent, format=self.testContentFormat)
self.sourceGraph = graph
def test_serialize_and_reparse(self):
reparsedGraph = serialize_and_load(self.sourceGraph, self.serializer)
_assert_equal_graphs(self.sourceGraph, reparsedGraph)
def test_multiple(self):
"""Repeats ``test_serialize`` ``self.repeats`` times, to reduce sucess based on in-memory ordering."""
for i in range(self.repeats):
self.test_serialize_and_reparse()
# test_multiple.slowtest=True # not really slow?
def _assert_equal_graphs(g1, g2):
assert len(g1) == len(g2), "Serialized graph not same size as source graph."
g1copy = _mangled_copy(g1)
g2copy = _mangled_copy(g2)
g1copy -= _mangled_copy(g2)
g2copy -= _mangled_copy(g1)
assert len(g1copy) == 0, "Source graph larger than serialized graph."
assert len(g2copy) == 0, "Serialized graph larger than source graph."
_blank = BNode()
def _mangled_copy(g):
"Makes a copy of the graph, replacing all bnodes with the bnode ``_blank``."
gcopy = ConjunctiveGraph()
def isbnode(v):
return isinstance(v, BNode)
for s, p, o in g:
if isbnode(s):
s = _blank
if isbnode(p):
p = _blank
if isbnode(o):
o = _blank
gcopy.add((s, p, o))
return gcopy
def serialize(sourceGraph, makeSerializer, getValue=True, extra_args={}):
serializer = makeSerializer(sourceGraph)
stream = BytesIO()
serializer.serialize(stream, **extra_args)
return getValue and stream.getvalue() or stream
def serialize_and_load(sourceGraph, makeSerializer):
stream = serialize(sourceGraph, makeSerializer, False)
stream.seek(0)
reparsedGraph = ConjunctiveGraph()
reparsedGraph.parse(stream, publicID=None, format="xml")
return reparsedGraph
class TestXMLSerializer(SerializerTestBase):
serializer = XMLSerializer
testContent = """
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix : <http://example.org/model/test#> .
:value rdfs:domain :Test .
:Test rdfs:subClassOf
[ a owl:Restriction;
owl:onProperty :value ],
[ a owl:Restriction;
owl:onProperty :name ] .
<http://example.org/data/a> a :Test;
rdfs:seeAlso <http://example.org/data/b>;
:value "A" .
<http://example.org/data/b>
:name "Bee"@en, "Be"@sv;
:value "B" .
<http://example.org/data/c> a rdfs:Resource;
rdfs:seeAlso <http://example.org/data/c>;
:value 3 .
<http://example.org/data/d> a rdfs:Resource;
rdfs:seeAlso <http://example.org/data/c> ;
rdfs:seeAlso <http://example.org/data/b> ;
rdfs:seeAlso <http://example.org/data/a> .
_:bnode1 a :BNode;
rdfs:seeAlso _:bnode2 .
_:bnode2 a :BNode ;
rdfs:seeAlso _:bnode3 .
_:bnode3 a :BNode ;
rdfs:seeAlso _:bnode2 .
"""
testContentFormat = "n3"
def test_result_fragments(self):
rdfXml = serialize(self.sourceGraph, self.serializer)
# print "--------"
# print rdfXml
# print "--------"
assert (
'<rdf:Description rdf:about="http://example.org/data/a">'.encode("latin-1")
in rdfXml
)
assert (
'<rdf:type rdf:resource="http://example.org/model/test#Test"/>'.encode(
"latin-1"
)
in rdfXml
)
assert (
'<rdf:Description rdf:about="http://example.org/data/b">'.encode("latin-1")
in rdfXml
)
assert '<name xml:lang="en">Bee</name>'.encode("latin-1") in rdfXml
assert (
'<value rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">3</value>'.encode(
"latin-1"
)
in rdfXml
)
assert (
'<rdf:Description rdf:nodeID="'.encode("latin-1") in rdfXml
), "expected one identified bnode in serialized graph"
def test_result_fragments_with_base(self):
rdfXml = serialize(
self.sourceGraph,
self.serializer,
extra_args={
"base": "http://example.org/",
"xml_base": "http://example.org/",
},
)
# print "--------"
# print rdfXml
# print "--------"
assert 'xml:base="http://example.org/"'.encode("latin-1") in rdfXml
assert '<rdf:Description rdf:about="data/a">'.encode("latin-1") in rdfXml
assert '<rdf:type rdf:resource="model/test#Test"/>'.encode("latin-1") in rdfXml
assert '<rdf:Description rdf:about="data/b">'.encode("latin-1") in rdfXml
assert (
'<value rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">3</value>'.encode(
"latin-1"
)
in rdfXml
)
assert (
'<rdf:Description rdf:nodeID="'.encode("latin-1") in rdfXml
), "expected one identified bnode in serialized graph"
def test_subClassOf_objects(self):
reparsedGraph = serialize_and_load(self.sourceGraph, self.serializer)
_assert_expected_object_types_for_predicates(
reparsedGraph, [RDFS.seeAlso, RDFS.subClassOf], [URIRef, BNode]
)
def _assert_expected_object_types_for_predicates(graph, predicates, types):
for s, p, o in graph:
if p in predicates:
someTrue = [isinstance(o, t) for t in types]
assert (
True in someTrue
), "Bad type %s for object when predicate is <%s>." % (type(o), p)
|
