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import sys
import os
import unittest
from tempfile import mkdtemp, mkstemp
import shutil
from rdflib import Graph, Dataset, URIRef, BNode, plugin
from rdflib.graph import DATASET_DEFAULT_GRAPH_ID
from nose.exc import SkipTest
class DatasetTestCase(unittest.TestCase):
store = 'default'
slow = True
tmppath = None
def setUp(self):
try:
self.graph = Dataset(store=self.store)
except ImportError:
raise SkipTest(
"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 = "http://localhost:3030/ukpp/"
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(u'urn:michel')
self.tarek = URIRef(u'urn:tarek')
self.bob = URIRef(u'urn:bob')
self.likes = URIRef(u'urn:likes')
self.hates = URIRef(u'urn:hates')
self.pizza = URIRef(u'urn:pizza')
self.cheese = URIRef(u'urn:cheese')
# Use regular URIs because SPARQL endpoints like Fuseki alter short names
self.c1 = URIRef(u'urn:context-1')
self.c2 = URIRef(u'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.assertEquals(set(x.identifier for x in self.graph.contexts()),
set([self.c1, DATASET_DEFAULT_GRAPH_ID]))
# added graph is empty
self.assertEquals(len(g1), 0)
g1.add( (self.tarek, self.likes, self.pizza) )
# added graph still exists
self.assertEquals(set(x.identifier for x in self.graph.contexts()),
set([self.c1, DATASET_DEFAULT_GRAPH_ID]))
# added graph contains one triple
self.assertEquals(len(g1), 1)
g1.remove( (self.tarek, self.likes, self.pizza) )
# added graph is empty
self.assertEquals(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.assertEquals(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.assertEquals(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.assertEquals(len(self.graph), 1)
# only default exists
self.assertEquals(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.assertEquals(len(self.graph), 0)
# default still exists
self.assertEquals(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])
# 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):
if s.name in ('default', 'IOMemory', 'Auditable',
'Concurrent', 'SPARQLStore'):
continue # these are tested by default
if not s.getClass().graph_aware:
continue
if s.name == "SPARQLUpdateStore":
import urllib2
try:
assert len(urllib2.urlopen("http://localhost:3030/").read()) > 0
except:
sys.stderr.write("No SPARQL endpoint for %s (tests skipped)\n" % s.name)
continue
locals()["t%d" % tests] = type("%sContextTestCase" % s.name, (
DatasetTestCase,), {"store": s.name})
tests += 1
if __name__ == '__main__':
unittest.main()
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