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import os
from rdflib import Graph
from test.data import BOB, CHEESE, HATES, LIKES, MICHEL, PIZZA, TAREK, TEST_DATA_DIR
timblcardn3 = open(os.path.join(TEST_DATA_DIR, "timbl-card.n3")).read()
def add_stuff(graph):
graph.add((TAREK, LIKES, PIZZA))
graph.add((TAREK, LIKES, CHEESE))
graph.add((TAREK, LIKES, BOB))
graph.add((TAREK, LIKES, MICHEL))
graph.add((MICHEL, LIKES, PIZZA))
graph.add((MICHEL, LIKES, CHEESE))
graph.add((MICHEL, LIKES, TAREK))
graph.add((BOB, LIKES, CHEESE))
graph.add((BOB, HATES, PIZZA))
graph.add((BOB, HATES, MICHEL))
graph.add((BOB, LIKES, TAREK))
def test_unique_subjects():
graph = Graph()
add_stuff(graph)
assert len([sub for sub in graph.subjects()]) == 11
assert len([sub for sub in graph.subjects(unique=True)]) == 3
def test_unique_predicates():
graph = Graph()
add_stuff(graph)
assert len([pred for pred in graph.predicates()]) == 11
assert len([pred for pred in graph.predicates(unique=True)]) == 2
def test_unique_objects():
graph = Graph()
add_stuff(graph)
assert len([obj for obj in graph.objects()]) == 11
assert len([obj for obj in graph.objects(unique=True)]) == 5
def test_unique_subject_predicates():
graph = Graph()
add_stuff(graph)
assert len([sub for sub in graph.subject_predicates()]) == 11
assert len([sub for sub in graph.subject_predicates(unique=True)]) == 4
def test_unique_predicate_objects():
graph = Graph()
add_stuff(graph)
assert len([pred for pred in graph.predicate_objects()]) == 11
assert len([pred for pred in graph.predicate_objects(unique=True)]) == 7
def test_unique_subject_objects():
graph = Graph()
add_stuff(graph)
assert len([obj for obj in graph.subject_objects()]) == 11
assert len([obj for obj in graph.subject_objects(unique=True)]) == 11
no_of_statements_in_card = 86
no_of_unique_subjects = 20
no_of_unique_predicates = 58
no_of_unique_objects = 62
def test_parse_berners_lee_card_into_graph():
graph = Graph()
graph.parse(data=timblcardn3, format="n3")
assert len(list(graph.subjects())) == no_of_statements_in_card
assert len(list(graph.subjects(unique=True))) == no_of_unique_subjects
assert len(list(graph.predicates(unique=True))) == no_of_unique_predicates
assert len(list(graph.objects(unique=True))) == no_of_unique_objects
def test_subjects_multi():
graph = Graph()
add_stuff(graph)
assert len([subj for subj in graph.subjects(LIKES, [CHEESE, PIZZA])]) == 5
assert len([subj for subj in graph.subjects(LIKES, [])]) == 0
assert len([subj for subj in graph.subjects(LIKES | HATES, [CHEESE, PIZZA])]) == 6
def test_objects_multi():
graph = Graph()
add_stuff(graph)
assert len([obj for obj in graph.objects([TAREK, BOB], LIKES)]) == 6
assert len([obj for obj in graph.objects([], LIKES)]) == 0
assert len([obj for obj in graph.objects([TAREK, BOB], LIKES | HATES)]) == 8
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