Reverted Close() method signature change

postgres/README.md

@@ -16,7 +16,7 @@ func (s *Storage) Get(key string) ([]byte, error)
 func (s *Storage) Set(key string, val []byte, exp time.Duration) error
 func (s *Storage) Delete(key string) error
 func (s *Storage) Reset() error
-func (s *Storage) Close()
+func (s *Storage) Close() error
 ```
 ### Installation
 Postgres is tested on the 2 last [Go versions](https://golang.org/dl/) with support for modules. So make sure to initialize one first if you didn't do that yet:

postgres/postgres.go

@@ -172,10 +172,11 @@ func (s *Storage) Reset() error {
 }
 
 // Close the database
-func (s *Storage) Close() {
+func (s *Storage) Close() error {
 	s.done <- struct{}{}
 	s.db.Stat()
 	s.db.Close()
+	return nil
 }
 
 // gcTicker starts the gc ticker
@@ -209,7 +210,3 @@ func (s *Storage) checkSchema(tableName string) {
 		fmt.Printf(checkSchemaMsg, string(data))
 	}
 }
-
-func (s *Storage) DB() *pgxpool.Pool {
-	return s.db
-}

postgres/postgres_test.go

@@ -174,3 +174,7 @@ func Test_SslRequiredMode(t *testing.T) {
 		SslMode:  "require",
 	})
 }
+
+func Test_Postgres_Close(t *testing.T) {
+	utils.AssertEqual(t, nil, testStore.Close())
+}