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import sys
import os
from typing import Optional
import unittest
from tempfile import mkdtemp, mkstemp
import shutil
import pytest
from rdflib import Dataset, URIRef, plugin
from rdflib.graph import DATASET_DEFAULT_GRAPH_ID
# Will also run SPARQLUpdateStore tests against local SPARQL1.1 endpoint if
# available. This assumes SPARQL1.1 query/update endpoints running locally at
# http://localhost:3030/db/
#
# Testing SPARQLUpdateStore Dataset behavior needs a different endpoint behavior
# than our ConjunctiveGraph tests in test_sparqlupdatestore.py!
#
# For the tests here to run, you can for example start fuseki with:
# ./fuseki-server --mem --update /db
# THIS WILL DELETE ALL DATA IN THE /db dataset
HOST = "http://localhost:3030"
DB = "/db/"
class DatasetTestCase(unittest.TestCase):
store = "default"
skip_reason = None
slow = True
tmppath = None
def setUp(self):
if self.skip_reason is not None:
self.skipTest(skip_reason)
try:
self.graph = Dataset(store=self.store)
except ImportError:
pytest.skip("Dependencies for store '%s' not available!" % self.store)
if self.store == "SQLite":
_, self.tmppath = mkstemp(prefix="test", dir="/tmp", suffix=".sqlite")
elif self.store == "SPARQLUpdateStore":
root = HOST + DB
self.graph.open((root + "sparql", root + "update"))
else:
self.tmppath = mkdtemp()
if self.store != "SPARQLUpdateStore":
self.graph.open(self.tmppath, create=True)
self.michel = URIRef("urn:michel")
self.tarek = URIRef("urn:tarek")
self.bob = URIRef("urn:bob")
self.likes = URIRef("urn:likes")
self.hates = URIRef("urn:hates")
self.pizza = URIRef("urn:pizza")
self.cheese = URIRef("urn:cheese")
# Use regular URIs because SPARQL endpoints like Fuseki alter short names
self.c1 = URIRef("urn:context-1")
self.c2 = URIRef("urn:context-2")
# delete the graph for each test!
self.graph.remove((None, None, None))
for c in self.graph.contexts():
c.remove((None, None, None))
assert len(c) == 0
self.graph.remove_graph(c)
def tearDown(self):
self.graph.close()
if self.store == "SPARQLUpdateStore":
pass
else:
if os.path.isdir(self.tmppath):
shutil.rmtree(self.tmppath)
else:
os.remove(self.tmppath)
def testGraphAware(self):
if not self.graph.store.graph_aware:
return
g = self.graph
g1 = g.graph(self.c1)
# Some SPARQL endpoint backends (e.g. TDB) do not consider
# empty named graphs
if self.store != "SPARQLUpdateStore":
# added graph exists
self.assertEqual(
set(x.identifier for x in self.graph.contexts()),
set([self.c1, DATASET_DEFAULT_GRAPH_ID]),
)
# added graph is empty
self.assertEqual(len(g1), 0)
g1.add((self.tarek, self.likes, self.pizza))
# added graph still exists
self.assertEqual(
set(x.identifier for x in self.graph.contexts()),
set([self.c1, DATASET_DEFAULT_GRAPH_ID]),
)
# added graph contains one triple
self.assertEqual(len(g1), 1)
g1.remove((self.tarek, self.likes, self.pizza))
# added graph is empty
self.assertEqual(len(g1), 0)
# Some SPARQL endpoint backends (e.g. TDB) do not consider
# empty named graphs
if self.store != "SPARQLUpdateStore":
# graph still exists, although empty
self.assertEqual(
set(x.identifier for x in self.graph.contexts()),
set([self.c1, DATASET_DEFAULT_GRAPH_ID]),
)
g.remove_graph(self.c1)
# graph is gone
self.assertEqual(
set(x.identifier for x in self.graph.contexts()),
set([DATASET_DEFAULT_GRAPH_ID]),
)
def testDefaultGraph(self):
# Something the default graph is read-only (e.g. TDB in union mode)
if self.store == "SPARQLUpdateStore":
print(
"Please make sure updating the default graph "
"is supported by your SPARQL endpoint"
)
self.graph.add((self.tarek, self.likes, self.pizza))
self.assertEqual(len(self.graph), 1)
# only default exists
self.assertEqual(
set(x.identifier for x in self.graph.contexts()),
set([DATASET_DEFAULT_GRAPH_ID]),
)
# removing default graph removes triples but not actual graph
self.graph.remove_graph(DATASET_DEFAULT_GRAPH_ID)
self.assertEqual(len(self.graph), 0)
# default still exists
self.assertEqual(
set(x.identifier for x in self.graph.contexts()),
set([DATASET_DEFAULT_GRAPH_ID]),
)
def testNotUnion(self):
# Union depends on the SPARQL endpoint configuration
if self.store == "SPARQLUpdateStore":
print(
"Please make sure your SPARQL endpoint has not configured "
"its default graph as the union of the named graphs"
)
g1 = self.graph.graph(self.c1)
g1.add((self.tarek, self.likes, self.pizza))
self.assertEqual(list(self.graph.objects(self.tarek, None)), [])
self.assertEqual(list(g1.objects(self.tarek, None)), [self.pizza])
def testIter(self):
"""PR 1382: adds __iter__ to Dataset"""
d = Dataset()
uri_a = URIRef("https://example.com/a")
uri_b = URIRef("https://example.com/b")
uri_c = URIRef("https://example.com/c")
uri_d = URIRef("https://example.com/d")
d.add_graph(URIRef("https://example.com/g1"))
d.add((uri_a, uri_b, uri_c, URIRef("https://example.com/g1")))
d.add(
(uri_a, uri_b, uri_c, URIRef("https://example.com/g1"))
) # pointless addition: duplicates above
d.add_graph(URIRef("https://example.com/g2"))
d.add((uri_a, uri_b, uri_c, URIRef("https://example.com/g2")))
d.add((uri_a, uri_b, uri_d, URIRef("https://example.com/g1"))) # new, uri_d
# traditional iterator
i_trad = 0
for t in d.quads((None, None, None)):
i_trad += 1
# new Dataset.__iter__ iterator
i_new = 0
for t in d:
i_new += 1
self.assertEqual(i_new, i_trad) # both should be 3
# dynamically create classes for each registered Store
pluginname = None
if __name__ == "__main__":
if len(sys.argv) > 1:
pluginname = sys.argv[1]
tests = 0
for s in plugin.plugins(pluginname, plugin.Store):
skip_reason: Optional[str] = None
if s.name in ("default", "Memory", "Auditable", "Concurrent", "SPARQLStore"):
continue # these are tested by default
if not s.getClass().graph_aware:
continue
if s.name == "SPARQLUpdateStore":
from urllib.request import urlopen
try:
assert len(urlopen(HOST).read()) > 0
except BaseException:
skip_reason = "No SPARQL endpoint for %s (tests skipped)\n" % s.name
sys.stderr.write(skip_reason)
locals()["t%d" % tests] = type(
"%sContextTestCase" % s.name,
(DatasetTestCase,),
{"store": s.name, "skip_reason": skip_reason},
)
tests += 1
if __name__ == "__main__":
unittest.main()
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