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