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
|
# imports
import unittest
# bsfs imports
from bsfs import schema as bsc
from bsfs.graph import Graph
from bsfs.graph.ac import NullAC
from bsfs.namespace import Namespace, ns
from bsfs.triple_store.sparql import SparqlStore
from bsfs.utils import URI
# symbol to test
from bsfs.graph.walk import Walk
## code ##
bse = ns.bse
bst = Namespace('http://bsfs.ai/schema/Tag')
class TestWalk(unittest.TestCase):
def setUp(self):
# backend setup
self.schema = bsc.from_string('''
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix xsd: <http://www.w3.org/2001/XMLSchema#>
prefix bsfs: <http://bsfs.ai/schema/>
prefix bse: <http://bsfs.ai/schema/Entity#>
prefix bst: <http://bsfs.ai/schema/Tag#>
bsfs:Entity rdfs:subClassOf bsfs:Node .
bsfs:Tag rdfs:subClassOf bsfs:Node .
bsfs:User rdfs:subClassOf bsfs:Node .
xsd:string rdfs:subClassOf bsfs:Literal .
bse:author rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Node ;
rdfs:range bsfs:User .
bse:tag rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Entity ;
rdfs:range bsfs:Tag .
bst:label rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Tag ;
rdfs:range xsd:string ;
bsfs:unique "true"^^xsd:boolean .
bst:subTagOf rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Tag ;
rdfs:range bsfs:Tag .
bst:main rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Tag ;
rdfs:range bsfs:Entity .
bst:author rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Tag ;
rdfs:range xsd:string .
''')
self.backend = SparqlStore.Open()
self.user = URI('http://example.com/me')
self.ac = NullAC(self.backend, self.user)
self.graph = Graph(self.backend, self.ac)
self.graph.migrate(self.schema)
# nodes setup
self.ents = self.graph.nodes(ns.bsfs.Entity, {
URI('http://example.com/me/entity#1234'),
URI('http://example.com/me/entity#4321')})
self.tags = self.graph.nodes(ns.bsfs.Tag, {
URI('http://example.com/me/tag#1234'),
URI('http://example.com/me/tag#4321')})
# add some instances
self.ents.set(bse.tag, self.tags)
self.graph.node(ns.bsfs.Tag, URI('http://example.com/me/tag#1234')).set(bst.label, 'hello')
self.graph.node(ns.bsfs.Tag, URI('http://example.com/me/tag#4321')).set(bst.label, 'world')
def test_essentials(self): # __eq__, __hash__, __str__, __repr__
p_author = self.schema.predicate(bse.author)
p_tag = self.schema.predicate(bse.tag)
p_main = self.schema.predicate(bst.main)
# comparison
self.assertEqual(Walk(self.ents, [p_tag]), Walk(self.ents, [p_tag]))
self.assertEqual(hash(Walk(self.ents, [p_tag])), hash(Walk(self.ents, [p_tag])))
# comparison respects type
class Foo(Walk): pass
self.assertNotEqual(Walk(self.ents, [p_tag]), Foo(self.ents, [p_tag]))
self.assertNotEqual(hash(Walk(self.ents, [p_tag])), hash(Foo(self.ents, [p_tag])))
# comparison respects root
self.assertNotEqual(Walk(self.ents, [p_author]), Walk(self.tags, [p_author]))
self.assertNotEqual(hash(Walk(self.ents, [p_author])), hash(Walk(self.tags, [p_author])))
# comparison respects path
self.assertNotEqual(Walk(self.tags, [p_author]), Walk(self.tags, [p_main]))
self.assertNotEqual(hash(Walk(self.tags, [p_author])), hash(Walk(self.tags, [p_main])))
# string conversion
self.assertEqual(str(Walk(self.ents, [p_tag, p_main])),
'Walk(@http://bsfs.ai/schema/Entity: http://bsfs.ai/schema/Entity#tag, http://bsfs.ai/schema/Tag#main)')
self.assertEqual(repr(Walk(self.ents, [p_tag, p_main])),
'Walk(http://bsfs.ai/schema/Entity, (http://bsfs.ai/schema/Entity#tag, http://bsfs.ai/schema/Tag#main))')
def test_tail(self):
self.assertEqual(Walk(self.ents, (
self.schema.predicate(bse.tag),
)).tail,
self.schema.node(ns.bsfs.Tag))
self.assertEqual(Walk(self.ents, (
self.schema.predicate(bse.tag),
self.schema.predicate(bst.main),
)).tail,
self.schema.node(ns.bsfs.Entity))
def test_step(self):
tag_type = self.schema.node(ns.bsfs.Tag)
# step returns a predicate
self.assertEqual(Walk.step(self.schema, tag_type, 'subTagOf'),
(self.schema.predicate(bst.subTagOf), ))
# invalid step raises an error
self.assertRaises(ValueError, Walk.step, self.schema, tag_type, 'foobar')
# ambiguous step raises an error
self.assertRaises(ValueError, Walk.step, self.schema, tag_type, 'author')
def test_getattr(self): # __getattr__
walk = Walk(self.ents, (self.schema.predicate(bse.tag), ))
# first step
self.assertEqual(walk.subTagOf, Walk(self.ents, (
self.schema.predicate(bse.tag),
self.schema.predicate(bst.subTagOf),
)))
# second step
self.assertEqual(walk.subTagOf.main, Walk(self.ents, (
self.schema.predicate(bse.tag),
self.schema.predicate(bst.subTagOf),
self.schema.predicate(bst.main),
)))
# invalid step raises an error
self.assertRaises(ValueError, getattr, walk, 'foobar')
# ambiguous step raises an error
self.assertRaises(ValueError, getattr, walk, 'author')
def test_get(self): # get, __call__
walk = Walk(self.ents, (self.schema.predicate(bse.tag), ))
tags = {
self.graph.node(ns.bsfs.Tag, URI('http://example.com/me/tag#1234')),
self.graph.node(ns.bsfs.Tag, URI('http://example.com/me/tag#4321'))}
# get returns from Nodes.get
self.assertDictEqual(walk.get(), {
self.graph.node(ns.bsfs.Entity, URI('http://example.com/me/entity#1234')): tags,
self.graph.node(ns.bsfs.Entity, URI('http://example.com/me/entity#4321')): tags,
})
self.assertDictEqual(walk(), {
self.graph.node(ns.bsfs.Entity, URI('http://example.com/me/entity#1234')): tags,
self.graph.node(ns.bsfs.Entity, URI('http://example.com/me/entity#4321')): tags,
})
# get passes kwargs to Nodes.get
self.assertSetEqual(tags, walk.get(node=False))
self.assertSetEqual(tags, walk(node=False))
self.assertSetEqual(tags, set(walk.get(view=list, node=False)))
self.assertSetEqual(tags, set(walk(view=list, node=False)))
# get returns values if need be
self.assertSetEqual(walk.label(node=False), {'hello', 'world'})
## main ##
if __name__ == '__main__':
unittest.main()
## EOF ##
|
