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import rdflib
from fastapi.testclient import TestClient
from rdflib import URIRef
from rdflib.namespace import RDF, RDFS
from rdflib.plugins.sparql.evaluate import evalBGP
from rdflib_endpoint import SparqlEndpoint
# TODO: not used due to bug with FastAPI TestClient when using different apps in the tests
def custom_eval(ctx, part):
"""Rewrite triple patterns to get super-classes"""
if part.name == "BGP":
# rewrite triples
triples = []
for t in part.triples:
if t[1] == RDF.type:
bnode = rdflib.BNode()
triples.append((t[0], t[1], bnode))
triples.append((bnode, RDFS.subClassOf, t[2]))
else:
triples.append(t)
# delegate to normal evalBGP
return evalBGP(ctx, triples)
raise NotImplementedError()
g = rdflib.Graph()
g.add((URIRef("http://human"), RDFS.subClassOf, URIRef("http://mammal")))
g.add((URIRef("http://alice"), RDF.type, URIRef("http://human")))
eval_app = SparqlEndpoint(graph=g, custom_eval=custom_eval, functions={})
eval_endpoint = TestClient(eval_app)
def test_custom_eval():
# eval_app = SparqlEndpoint(
# graph=g,
# custom_eval=custom_eval,
# functions={}
# )
# eval_endpoint = TestClient(eval_app)
response = eval_endpoint.get("/?query=" + select_parent, headers={"accept": "application/json"})
print(response.json())
assert response.status_code == 200
print(response.json()["results"]["bindings"])
assert str(response.json()["results"]["bindings"][0]["s"]["value"]) == "http://alice"
response = eval_endpoint.post("/", data="query=" + select_parent, headers={"accept": "application/json"})
assert response.status_code == 200
assert str(response.json()["results"]["bindings"][0]["s"]["value"]) == "http://alice"
select_parent = """SELECT * WHERE {
?s a <http://mammal> .
}"""
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