Adds 90_geocode_ip and tests

server/extension/sql/90_geocode_ip_test.sql

@@ -0,0 +1,9 @@
+-- Check that the public function is callable, even with no data
+-- It should return NULL
+SELECT cdb_geocoder_server.geocode_ip_point(session_user, txid_current(), '0.0.0.0'::inet);
+
+-- Insert dummy data into ip_address_locations
+INSERT INTO ip_address_locations VALUES ('0.0.0.0'::inet, (ST_SetSRID(ST_MakePoint('40.40', '3.71'), 4326)));
+
+-- This should return the polygon inserted above
+SELECT cdb_geocoder_server.geocode_ip_point(session_user, txid_current(), '0.0.0.0'::inet);