[]byte skips encoding/decoding

refs #104

query_test.go

@@ -431,6 +431,7 @@ func TestQueryRowCoreByteSlice(t *testing.T) {
 	}{
 		{"select $1::text", "Jack", []byte("Jack")},
 		{"select $1::text", []byte("Jack"), []byte("Jack")},
+		{"select $1::int4", int32(239023409), []byte{14, 63, 53, 49}},
 		{"select $1::varchar", []byte("Jack"), []byte("Jack")},
 		{"select $1::bytea", []byte{0, 15, 255, 17}, []byte{0, 15, 255, 17}},
 	}
@@ -451,6 +452,30 @@ func TestQueryRowCoreByteSlice(t *testing.T) {
 	}
 }
 
+func TestQueryRowByteSliceArgument(t *testing.T) {
+	t.Parallel()
+
+	conn := mustConnect(t, *defaultConnConfig)
+	defer closeConn(t, conn)
+
+	sql := "select $1::int4"
+	queryArg := []byte{14, 63, 53, 49}
+	expected := int32(239023409)
+
+	var actual int32
+
+	err := conn.QueryRow(sql, queryArg).Scan(&actual)
+	if err != nil {
+		t.Errorf("Unexpected failure: %v (sql -> %v)", err, sql)
+	}
+
+	if expected != actual {
+		t.Errorf("Expected %v, got %v (sql -> %v)", expected, actual, sql)
+	}
+
+	ensureConnValid(t, conn)
+}
+
 func TestQueryRowUnknownType(t *testing.T) {
 	t.Parallel()