Start adding tests

Signed-off-by: Nikolai Rodionov <allanger@badhouseplants.net>

go.mod

@@ -12,6 +12,9 @@ require (
 	github.com/google/uuid v1.6.0
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
 	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.3
+	github.com/jackc/pgconn v1.14.3
+	github.com/jackc/pgerrcode v0.0.0-20220416144525-469b46aa5efa
+	github.com/jackc/pgx/v5 v5.5.4
 	github.com/mattn/go-colorable v0.1.14
 	github.com/redis/go-redis/v9 v9.18.0
 	github.com/stretchr/testify v1.11.1
@@ -24,6 +27,12 @@ require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/geozelot/intree v1.0.0 // indirect
+	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
+	github.com/jackc/pgio v1.0.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgproto3/v2 v2.3.3 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
+	github.com/jackc/puddle/v2 v2.2.1 // indirect
 	github.com/kr/pretty v0.3.1 // indirect
 	github.com/lib/pq v1.10.9 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
@@ -34,7 +43,7 @@ require (
 	go.uber.org/atomic v1.11.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/oauth2 v0.36.0 // indirect
-	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+	golang.org/x/sync v0.19.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )