Check for goroutine leaks in SQL tasks

dao/dao_test.go

@@ -7,11 +7,13 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+	"go.uber.org/goleak"
 
 	"gitlab.com/slon/shad-go/pgfixture"
 )
 
 func TestDao(t *testing.T) {
+	goleak.VerifyNone(t)
 	dsn := pgfixture.Start(t)
 
 	ctx := context.Background()

ledger/ledger_test.go

@@ -9,12 +9,15 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/require"
+	"go.uber.org/goleak"
 
 	"gitlab.com/slon/shad-go/ledger"
 	"gitlab.com/slon/shad-go/pgfixture"
 )
 
 func TestLedger(t *testing.T) {
+	goleak.VerifyNone(t)
+
 	dsn := pgfixture.Start(t)
 
 	ctx := context.Background()

shopfront/shopfront_test.go

@@ -6,11 +6,14 @@ import (
 
 	"github.com/go-redis/redis/v8"
 	"github.com/stretchr/testify/require"
+	"go.uber.org/goleak"
 
 	"gitlab.com/slon/shad-go/shopfront"
 )
 
 func TestShopfront(t *testing.T) {
+	goleak.VerifyNone(t)
+
 	rdb := redis.NewClient(&redis.Options{
 		Addr: StartRedis(t),
 	})