Update GPG key deletion test

This updates the test to work when it is executed from the development
environment where most of the Storage Service environment variables
are not set and OS tools are not installed.

tests/administration/test_views.py

@@ -4,6 +4,8 @@
 import pytest
 from administration.views import get_git_commit
 from django.urls import reverse
+from locations.models import Location
+from locations.models import Space
 
 
 @pytest.mark.parametrize(
@@ -23,8 +25,29 @@ def test_get_git_commit(check_output, expected_result, mocker):
     assert get_git_commit() == expected_result
 
 
+@pytest.fixture
+def space(tmp_path):
+    space_dir = tmp_path / "space"
+    space_dir.mkdir()
+
+    return Space.objects.create(path=str(space_dir))
+
+
+@pytest.fixture
+def ss_internal_location(space):
+    return Location.objects.create(
+        space=space,
+        relative_path="storage_service",
+        purpose=Location.STORAGE_SERVICE_INTERNAL,
+    )
+
+
+@pytest.mark.django_db
+@mock.patch("gnupg.GPG.export_keys", return_value="")
 @mock.patch("gnupg.GPG.list_keys")
-def test_deleting_key_from_detail_view_redirects_to_key_list(list_keys, admin_client):
+def test_deleting_key_from_detail_view_redirects_to_key_list(
+    list_keys, export_keys, admin_client, ss_internal_location
+):
     key_fingerprint = "3173C7395C551A6647656A5065C0718327F7B2C7"
     list_keys.return_value = mock.Mock(
         key_map={