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from rdflib.graph import ConjunctiveGraph
from typing import ClassVar
from rdflib import Namespace
from .testutils import MockHTTPResponse, ServedSimpleHTTPMock
import unittest
EG = Namespace("http://example.org/")
class TestSPARQLConnector(unittest.TestCase):
query_path: ClassVar[str]
query_endpoint: ClassVar[str]
update_path: ClassVar[str]
update_endpoint: ClassVar[str]
httpmock: ClassVar[ServedSimpleHTTPMock]
@classmethod
def setUpClass(cls) -> None:
super().setUpClass()
cls.httpmock = ServedSimpleHTTPMock()
cls.query_path = "/db/sparql"
cls.query_endpoint = f"{cls.httpmock.url}{cls.query_path}"
cls.update_path = "/db/update"
cls.update_endpoint = f"{cls.httpmock.url}{cls.update_path}"
@classmethod
def tearDownClass(cls) -> None:
super().tearDownClass()
cls.httpmock.stop()
def setUp(self):
self.httpmock.reset()
def tearDown(self):
pass
def test_graph_update(self):
graph = ConjunctiveGraph("SPARQLUpdateStore")
graph.open((self.query_endpoint, self.update_endpoint))
update_statement = f"INSERT DATA {{ {EG['subj']} {EG['pred']} {EG['obj']}. }}"
self.httpmock.do_post_responses.append(
MockHTTPResponse(
200,
"OK",
b"Update succeeded",
{"Content-Type": ["text/plain; charset=UTF-8"]},
)
)
# This test assumes that updates are performed using POST
# at the moment this is the only supported way for SPARQLUpdateStore
# to do updates.
graph.update(update_statement)
self.assertEqual(self.httpmock.call_count, 1)
req = self.httpmock.do_post_requests.pop(0)
self.assertEqual(req.parsed_path.path, self.update_path)
self.assertIn("application/sparql-update", req.headers.get("content-type"))
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