def item_from_graph(graph_path, ident):
graph = ConjunctiveGraph()
with open(graph_path) as graph_file:
graph.parse(format='trig', data=graph_file.read())
from rdflib_django import utils
utils.get_conjunctive_graph().parse(data=graph.serialize(format='nquads'),
format='nquads')
item = Item(iri='http://dbpedia.org/resource/' + ident)
item.save()
return item
def test_get_single_tag():
from rdflib_django import utils
graph = utils.get_named_graph('http://dbpedia.org/resource/Scotland')
graph.add((URIRef('http://dbpedia.org/resource/Scotland'), TOPICA.tag, URIRef('http://dbpedia.org/resource/Robert_Burns')))
graph.add((URIRef('http://dbpedia.org/resource/Robert_Burns'), RDFS.label, Literal('Robert Burns')))
item = Item(iri='http://dbpedia.org/resource/Scotland')
item.save()
assert len(item.get_tags()) == 1
assert Tag('http://dbpedia.org/resource/Robert_Burns', 'Robert Burns') in item.get_tags()
def test_can_access_graph_via_item():
# Given
iri = 'http://dbpedia.org/resource/Kevin_Bacon'
from rdflib_django import utils
graph = utils.get_named_graph(iri)
graph.add((URIRef('http://dbpedia.org/resource/Kevin_Bacon'), RDF.type, Literal('Person')))
# When
item = Item(iri=iri)
item.save()
# Then
assert (URIRef('http://dbpedia.org/resource/Kevin_Bacon'), RDF.type, Literal('Person')) in item.graph
def test_distance_between_overlapping_items():
from rdflib_django import utils
g1 = utils.get_named_graph('http://dbpedia.org/resource/Scotland')
g1.add((URIRef('http://dbpedia.org/resource/Scotland'), TOPICA.tag, URIRef('http://dbpedia.org/resource/Robert_Burns')))
g1.add((URIRef('http://dbpedia.org/resource/Robert_Burns'), RDFS.label, Literal('Robert Burns')))
g1.add((URIRef('http://dbpedia.org/resource/Scotland'), TOPICA.tag, URIRef('http://dbpedia.org/resource/United_Kingdom')))
g1.add((URIRef('http://dbpedia.org/resource/United_Kingdom'), RDFS.label, Literal('United Kingdom')))
g2 = utils.get_named_graph('http://dbpedia.org/resource/England')
g2.add((URIRef('http://dbpedia.org/resource/England'), TOPICA.tag, URIRef('http://dbpedia.org/resource/United_Kingdom')))
g2.add((URIRef('http://dbpedia.org/resource/United_Kingdom'), RDFS.label, Literal('United Kingdom')))
g2.add((URIRef('http://dbpedia.org/resource/England'), TOPICA.tag, URIRef('http://dbpedia.org/resource/William_Shakespeare')))
g2.add((URIRef('http://dbpedia.org/resource/William_Shakespeare'), RDFS.label, Literal('William Shakespeare')))
item1 = Item(iri='http://dbpedia.org/resource/Scotland')
item1.save()
item2 = Item(iri='http://dbpedia.org/resource/England')
item2.save()
assert item1.get_distance(item2) == 2.0/3.0
assert item2.get_distance(item1) == 2.0/3.0
def test_distance_between_identical_items_is_zero():
from rdflib_django import utils
g1 = utils.get_named_graph('http://dbpedia.org/resource/Scotland')
g1.add((URIRef('http://dbpedia.org/resource/Scotland'), TOPICA.tag, URIRef('http://dbpedia.org/resource/Robert_Burns')))
g1.add((URIRef('http://dbpedia.org/resource/Robert_Burns'), RDFS.label, Literal('Robert Burns')))
g1.add((URIRef('http://dbpedia.org/resource/Scotland'), TOPICA.tag, URIRef('http://dbpedia.org/resource/William_Wallace')))
g1.add((URIRef('http://dbpedia.org/resource/William_Wallace'), RDFS.label, Literal('William Wallace')))
g2 = utils.get_named_graph('http://dbpedia.org/resource/Alba')
g2.add((URIRef('http://dbpedia.org/resource/Alba'), TOPICA.tag, URIRef('http://dbpedia.org/resource/Robert_Burns')))
g2.add((URIRef('http://dbpedia.org/resource/Robert_Burns'), RDFS.label, Literal('Robert Burns')))
g2.add((URIRef('http://dbpedia.org/resource/Alba'), TOPICA.tag, URIRef('http://dbpedia.org/resource/William_Wallace')))
g2.add((URIRef('http://dbpedia.org/resource/William_Wallace'), RDFS.label, Literal('William Wallace')))
item1 = Item(iri='http://dbpedia.org/resource/Scotland')
item1.save()
item2 = Item(iri='http://dbpedia.org/resource/Alba')
item2.save()
assert item1.get_distance(item2) == 0.0
assert item2.get_distance(item1) == 0.0
def test_basic_item_creation():
item = Item(iri='http://dbpedia.org/resource/Kevin_Bacon')
item.save()
assert item is not None
def test_item_created_in_own_cluster():
item = Item(iri='http://dbpedia.org/resource/Kevin_Bacon')
item.save()
assert item.cluster is not None
assert item.cluster.item_set.count() == 1
