Moved contrib.gis tests out of contrib.

tests/gis_tests/utils.py

@@ -0,0 +1,41 @@
+from unittest import skip
+
+from django.conf import settings
+from django.db import DEFAULT_DB_ALIAS
+
+
+def no_backend(test_func, backend):
+    "Use this decorator to disable test on specified backend."
+    if settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'].rsplit('.')[-1] == backend:
+        @skip("This test is skipped on '%s' backend" % backend)
+        def inner():
+            pass
+        return inner
+    else:
+        return test_func
+
+
+# Decorators to disable entire test functions for specific
+# spatial backends.
+def no_oracle(func):
+    return no_backend(func, 'oracle')
+
+
+# Shortcut booleans to omit only portions of tests.
+_default_db = settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'].rsplit('.')[-1]
+oracle = _default_db == 'oracle'
+postgis = _default_db == 'postgis'
+mysql = _default_db == 'mysql'
+spatialite = _default_db == 'spatialite'
+
+# MySQL spatial indices can't handle NULL geometries.
+gisfield_may_be_null = not mysql
+
+if oracle and 'gis' in settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE']:
+    from django.contrib.gis.db.backends.oracle.models import OracleSpatialRefSys as SpatialRefSys
+elif postgis:
+    from django.contrib.gis.db.backends.postgis.models import PostGISSpatialRefSys as SpatialRefSys
+elif spatialite:
+    from django.contrib.gis.db.backends.spatialite.models import SpatialiteSpatialRefSys as SpatialRefSys
+else:
+    SpatialRefSys = None