add tests for sparql endpoint

tests/test_sparql.py

@@ -1,2 +1,57 @@
+from pathlib import Path
 
-# TODO: call the sparql endpoint with a sparql query in the query params and check for response 200
+import pytest
+from fastapi.testclient import TestClient
+from pyoxigraph.pyoxigraph import Store
+
+from prez.app import app
+from prez.dependencies import get_repo
+from prez.sparql.methods import Repo, PyoxigraphRepo
+
+
+@pytest.fixture(scope="session")
+def test_store() -> Store:
+    # Create a new pyoxigraph Store
+    store = Store()
+
+    for file in Path(__file__).parent.glob("../tests/data/*/input/*.ttl"):
+        store.load(file.read_bytes(), "text/turtle")
+
+    return store
+
+
+@pytest.fixture(scope="session")
+def test_repo(test_store: Store) -> Repo:
+    # Create a PyoxigraphQuerySender using the test_store
+    return PyoxigraphRepo(test_store)
+
+
+@pytest.fixture(scope="session")
+def client(test_repo: Repo) -> TestClient:
+    # Override the dependency to use the test_repo
+    def override_get_repo():
+        return test_repo
+
+    app.dependency_overrides[get_repo] = override_get_repo
+
+    with TestClient(app) as c:
+        yield c
+
+    # Remove the override to ensure subsequent tests are unaffected
+    app.dependency_overrides.clear()
+
+
+def test_select(client):
+    """check that a valid select query returns a 200 response."""
+    r = client.get("/sparql?query=SELECT%20*%0AWHERE%20%7B%0A%20%20%3Fs%20%3Fp%20%3Fo%0A%7D%20LIMIT%201")
+    assert (r.status_code, 200)
+
+def test_construct(client):
+    """check that a valid construct query returns a 200 response."""
+    r = client.get("/sparql?query=CONSTRUCT%20%7B%0A%20%20%3Fs%20%3Fp%20%3Fo%0A%7D%20WHERE%20%7B%0A%20%20%3Fs%20%3Fp%20%3Fo%0A%7D%20LIMIT%201")
+    assert (r.status_code, 200)
+
+def test_ask(client):
+    """check that a valid ask query returns a 200 response."""
+    r = client.get("/sparql?query=PREFIX%20ex%3A%20%3Chttp%3A%2F%2Fexample.com%2Fdatasets%2F%3E%0APREFIX%20dcterms%3A%20%3Chttp%3A%2F%2Fpurl.org%2Fdc%2Fterms%2F%3E%0A%0AASK%0AWHERE%20%7B%0A%20%20%3Fsubject%20dcterms%3Atitle%20%3Ftitle%20.%0A%20%20FILTER%20CONTAINS(LCASE(%3Ftitle)%2C%20%22sandgate%22)%0A%7D")
+    assert (r.status_code, 200)