fixed health check; sharding setup and tests

tests/sharding/query_routing_setup.sql

@@ -0,0 +1,61 @@
+
+DROP DATABASE IF EXISTS shard0;
+DROP DATABASE IF EXISTS shard1;
+DROP DATABASE IF EXISTS shard2;
+
+CREATE DATABASE shard0;
+CREATE DATABASE shard1;
+CREATE DATABASE shard2;
+
+\c shard0
+
+DROP TABLE IF EXISTS data CASCADE;
+
+CREATE TABLE data (
+    id BIGINT,
+    value VARCHAR
+) PARTITION BY HASH (id);
+
+CREATE TABLE data_shard_0 PARTITION OF data FOR VALUES WITH (MODULUS 3, REMAINDER 0);
+
+\c shard1
+
+DROP TABLE IF EXISTS data CASCADE;
+
+CREATE TABLE data (
+    id BIGINT,
+    value VARCHAR
+) PARTITION BY HASH (id);
+
+CREATE TABLE data_shard_1 PARTITION OF data FOR VALUES WITH (MODULUS 3, REMAINDER 1);
+
+
+\c shard2
+
+DROP TABLE IF EXISTS data CASCADE;
+
+CREATE TABLE data (
+    id BIGINT,
+    value VARCHAR
+) PARTITION BY HASH (id);
+
+CREATE TABLE data_shard_2 PARTITION OF data FOR VALUES WITH (MODULUS 3, REMAINDER 2);
+
+DROP ROLE IF EXISTS sharding_user;
+CREATE ROLE sharding_user ENCRYPTED PASSWORD 'sharding_user' LOGIN;
+
+GRANT CONNECT ON DATABASE shard0 TO sharding_user;
+GRANT CONNECT ON DATABASE shard1 TO sharding_user;
+GRANT CONNECT ON DATABASE shard2 TO sharding_user;
+
+\c shard0
+GRANT ALL ON SCHEMA public TO sharding_user;
+GRANT ALL ON TABLE data TO sharding_user;
+
+\c shard1
+GRANT ALL ON SCHEMA public TO sharding_user;
+GRANT ALL ON TABLE data TO sharding_user;
+
+\c shard2
+GRANT ALL ON SCHEMA public TO sharding_user;
+GRANT ALL ON TABLE data TO sharding_user;