Add stdlib test for []byte

stdlib/sql_test.go

@@ -1,6 +1,7 @@
 package stdlib_test
 
 import (
+	"bytes"
 	"database/sql"
 	"github.com/jackc/pgx"
 	"github.com/jackc/pgx/stdlib"
@@ -324,6 +325,25 @@ func TestConnQuery(t *testing.T) {
 	ensureConnValid(t, db)
 }
 
+func TestConnQueryRowByteSlice(t *testing.T) {
+	db := openDB(t)
+	defer closeDB(t, db)
+
+	expected := []byte{222, 173, 190, 239}
+	var actual []byte
+
+	err := db.QueryRow(`select E'\\xdeadbeef'::bytea`).Scan(&actual)
+	if err != nil {
+		t.Fatalf("db.QueryRow unexpectedly failed: %v", err)
+	}
+
+	if bytes.Compare(actual, expected) != 0 {
+		t.Fatalf("Expected %v, but got %v", expected, actual)
+	}
+
+	ensureConnValid(t, db)
+}
+
 func TestConnQueryFailure(t *testing.T) {
 	db := openDB(t)
 	defer closeDB(t, db)