convert seen service to use store

seen/handler/handler_test.go

@@ -2,13 +2,13 @@ package handler_test
 
 import (
 	"context"
-	"database/sql"
-	"os"
 	"testing"
 	"time"
 
 	"github.com/google/uuid"
 	"github.com/micro/micro/v3/service/auth"
+	"github.com/micro/micro/v3/service/store"
+	"github.com/micro/micro/v3/service/store/memory"
 	"github.com/micro/services/seen/handler"
 	pb "github.com/micro/services/seen/proto"
 	"github.com/stretchr/testify/assert"
@@ -16,24 +16,8 @@ import (
 )
 
 func testHandler(t *testing.T) *handler.Seen {
-	// connect to the database
-	addr := os.Getenv("POSTGRES_URL")
-	if len(addr) == 0 {
-		addr = "postgresql://postgres@localhost:5432/postgres?sslmode=disable"
-	}
-	sqlDB, err := sql.Open("pgx", addr)
-	if err != nil {
-		t.Fatalf("Failed to open connection to DB %s", err)
-	}
-
-	// clean any data from a previous run
-	if _, err := sqlDB.Exec("DROP TABLE IF EXISTS micro_seen_instances CASCADE"); err != nil {
-		t.Fatalf("Error cleaning database: %v", err)
-	}
-
-	h := &handler.Seen{}
-	h.DBConn(sqlDB).Migrations(&handler.SeenInstance{})
-	return h
+	store.DefaultStore = memory.NewStore()
+	return &handler.Seen{}
 }
 
 func TestSet(t *testing.T) {