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"""
Part of the bsfs test suite.
A copy of the license is provided with the project.
Author: Matthias Baumgartner, 2022
"""
# imports
import unittest
# bsie imports
from bsfs import schema
from bsfs.namespace import ns
from bsfs.triple_store import SparqlStore
from bsfs.utils import URI, errors
from bsfs.graph.nodes import Nodes
# objects to test
from bsfs.graph.graph import Graph
## code ##
class TestGraph(unittest.TestCase):
def setUp(self):
self.user = URI('http://example.com/me')
self.backend = SparqlStore.Open()
self.backend.schema = schema.Schema.from_string('''
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix bsfs: <http://bsfs.ai/schema/>
bsfs:Entity rdfs:subClassOf bsfs:Node .
''')
def test_str(self):
self.assertEqual(str(Graph(self.backend, self.user)),
'Graph(SparqlStore(uri=None), http://example.com/me)')
self.assertEqual(repr(Graph(self.backend, self.user)),
'Graph(backend=SparqlStore(uri=None), user=http://example.com/me)')
# str respects backend
class Foo(SparqlStore): pass
self.assertEqual(str(Graph(Foo.Open(), self.user)),
'Graph(Foo(uri=None), http://example.com/me)')
self.assertEqual(repr(Graph(Foo.Open(), self.user)),
'Graph(backend=Foo(uri=None), user=http://example.com/me)')
# str respect user
self.assertEqual(str(Graph(self.backend, URI('http://example.com/you'))),
'Graph(SparqlStore(uri=None), http://example.com/you)')
self.assertEqual(repr(Graph(self.backend, URI('http://example.com/you'))),
'Graph(backend=SparqlStore(uri=None), user=http://example.com/you)')
# str respects type
class Bar(Graph): pass
self.assertEqual(str(Bar(self.backend, self.user)),
'Bar(SparqlStore(uri=None), http://example.com/me)')
self.assertEqual(repr(Bar(self.backend, self.user)),
'Bar(backend=SparqlStore(uri=None), user=http://example.com/me)')
def test_equality(self):
graph = Graph(self.backend, self.user)
# instance is equal to itself
self.assertEqual(graph, graph)
self.assertEqual(hash(graph), hash(graph))
# instance is equal to a clone
self.assertEqual(graph, Graph(self.backend, self.user))
self.assertEqual(hash(graph), hash(Graph(self.backend, self.user)))
# equality respects backend
self.assertNotEqual(graph, Graph(SparqlStore.Open(), self.user))
self.assertNotEqual(hash(graph), hash(Graph(SparqlStore.Open(), self.user)))
# equality respects user
self.assertNotEqual(graph, Graph(self.backend, URI('http://example.com/you')))
self.assertNotEqual(hash(graph), hash(Graph(self.backend, URI('http://example.com/you'))))
def test_essentials(self):
graph = Graph(self.backend, self.user)
# schema
self.assertEqual(graph.schema, self.backend.schema)
self.assertRaises(AttributeError, setattr, graph, 'schema', None)
def test_nodes(self):
graph = Graph(self.backend, self.user)
guids = {URI('http://example.com/me/entity#1234'), URI('http://example.com/me/entity#4321')}
# returns a Nodes instance
self.assertEqual(
graph.nodes(ns.bsfs.Entity, guids),
Nodes(self.backend, self.user, graph.schema.node(ns.bsfs.Entity), guids))
# node_type must be in the schema
self.assertRaises(KeyError, graph.nodes, ns.bsfs.Invalid, guids)
def test_migrate(self):
# setup
graph = Graph(self.backend, self.user)
# argument must be a schema
class Foo(): pass
self.assertRaises(TypeError, graph.migrate, 'hello world')
self.assertRaises(TypeError, graph.migrate, 1234)
self.assertRaises(TypeError, graph.migrate, Foo())
# cannot append inconsistent schema
self.assertRaises(errors.ConsistencyError, graph.migrate, schema.Schema({}, {
schema.Node(ns.bsfs.Entity,
schema.Node(ns.bsfs.Intermediate,
schema.Node(ns.bsfs.Node, None)))}), append=True)
# cannot migrate to inconsistent schema
self.assertRaises(errors.ConsistencyError, graph.migrate, schema.Schema({}, {
schema.Node(ns.bsfs.Entity,
schema.Node(ns.bsfs.Intermediate,
schema.Node(ns.bsfs.Node, None)))}), append=False)
# can migrate to compatible schema
target_1 = schema.Schema.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#>
bsfs:Entity rdfs:subClassOf bsfs:Node .
xsd:string rdfs:subClassOf bsfs:Literal .
xsd:integer rdfs:subClassOf bsfs:Literal .
bse:filename rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Entity ;
rdfs:range xsd:string ;
bsfs:unique "false"^^xsd:boolean .
bse:filesize rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Entity ;
rdfs:range xsd:integer;
bsfs:unique "false"^^xsd:boolean .
''')
graph.migrate(target_1)
# new schema is applied
self.assertLess(target_1, graph.schema)
# graph appends its predicates
self.assertEqual(graph.schema, target_1 + schema.Schema.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 bsm: <http://bsfs.ai/schema/Meta#>
xsd:integer rdfs:subClassOf bsfs:Literal .
bsm:t_created rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Node ;
rdfs:range xsd:integer ;
bsfs:unique "true"^^xsd:boolean .
'''))
# can overwrite the current schema
target_2 = schema.Schema.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#>
bsfs:Entity rdfs:subClassOf bsfs:Node .
xsd:string rdfs:subClassOf bsfs:Literal .
xsd:integer rdfs:subClassOf bsfs:Literal .
bse:filename rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Entity ;
rdfs:range xsd:string ;
bsfs:unique "false"^^xsd:boolean .
bse:author rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Entity ;
rdfs:range xsd:string ;
bsfs:unique "true"^^xsd:boolean .
''')
graph.migrate(target_2, append=False)
# append overwrites existing predicates
self.assertFalse(target_1 <= graph.schema)
# new schema is applied
self.assertLess(target_2, graph.schema)
# graph appends its predicates
self.assertEqual(graph.schema, target_2 + schema.Schema.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 bsm: <http://bsfs.ai/schema/Meta#>
xsd:integer rdfs:subClassOf bsfs:Literal .
bsm:t_created rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:Node ;
rdfs:range xsd:integer ;
bsfs:unique "true"^^xsd:boolean .
'''))
## main ##
if __name__ == '__main__':
unittest.main()
## EOF ##
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