Skip partial_data tests for elastic search for which it has not been …

…implemented yet.

tests/server/routers/test_partial_data.py

@@ -1,8 +1,15 @@
+import pytest
+
 from optimade.models import PartialDataResponse
+from optimade.server.config import CONFIG
 
 from ..utils import NoJsonEndpointTests
 
 
+@pytest.mark.skipif(
+    CONFIG.database_backend.value not in ("mongomock", "mongodb"),
+    reason="At the moment partial data is only supported for the MongoDB backend",
+)
 class TestPartialDataEndpoint(NoJsonEndpointTests):
     """Tests for /partial_data/<entry_id>"""
 
@@ -12,6 +19,10 @@ class TestPartialDataEndpoint(NoJsonEndpointTests):
     response_cls = PartialDataResponse
 
 
+@pytest.mark.skipif(
+    CONFIG.database_backend.value not in ("mongomock", "mongodb"),
+    reason="At the moment partial data is only supported for the MongoDB backend",
+)
 def test_property_ranges_link(get_good_response, client):
     test_id = "mpf_551"
     params = "response_fields=cartesian_site_positions&property_ranges=dim_sites:2:74:1,dim_cartesian_dimensions:1:3:1&response_format=json"
@@ -21,9 +32,12 @@ def test_property_ranges_link(get_good_response, client):
     )  # todo expand test to check content better.
 
 
+@pytest.mark.skipif(
+    CONFIG.database_backend.value not in ("mongomock", "mongodb"),
+    reason="At the moment partial data is only supported for the MongoDB backend",
+)
 def test_wrong_id_partial_data(check_error_response, client):
-    """If a non-supported versioned base URL is passed, `553 Version Not Supported` should be returned
-
+    """
     A specific JSON response should also occur.
     """
     test_id = "mpf_486"