func benchPreparedQueryLoop(b *testing.B, db *sql.DB, stmt *sql.Stmt, result interface{}) {
rows, err := stmt.Query()
if err != nil {
b.Fatal(err)
}
if !rows.Next() {
rows.Close()
b.Fatal("no rows")
}
defer rows.Close()
for rows.Next() {
err = rows.Scan(&result)
if err != nil {
b.Fatal("failed to scan")
}
}
}
func TestByteaOutputFormats(t *testing.T) {
db := openTestConn(t)
defer db.Close()
if getServerVersion(t, db) < 90000 {
// skip
return
}
testByteaOutputFormat := func(f string, usePrepared bool) {
expectedData := []byte("\x5c\x78\x00\xff\x61\x62\x63\x01\x08")
sqlQuery := "SELECT decode('5c7800ff6162630108', 'hex')"
var data []byte
// use a txn to avoid relying on getting the same connection
txn, err := db.Begin()
if err != nil {
t.Fatal(err)
}
defer txn.Rollback()
_, err = txn.Exec("SET LOCAL bytea_output TO " + f)
if err != nil {
t.Fatal(err)
}
var rows *sql.Rows
var stmt *sql.Stmt
if usePrepared {
stmt, err = txn.Prepare(sqlQuery)
if err != nil {
t.Fatal(err)
}
rows, err = stmt.Query()
} else {
// use Query; QueryRow would hide the actual error
rows, err = txn.Query(sqlQuery)
}
if err != nil {
t.Fatal(err)
}
if !rows.Next() {
if rows.Err() != nil {
t.Fatal(rows.Err())
}
t.Fatal("shouldn't happen")
}
err = rows.Scan(&data)
if err != nil {
t.Fatal(err)
}
err = rows.Close()
if err != nil {
t.Fatal(err)
}
if stmt != nil {
err = stmt.Close()
if err != nil {
t.Fatal(err)
}
}
if !bytes.Equal(data, expectedData) {
t.Errorf("unexpected bytea value %v for format %s; expected %v", data, f, expectedData)
}
}
testByteaOutputFormat("hex", false)
testByteaOutputFormat("escape", false)
testByteaOutputFormat("hex", true)
testByteaOutputFormat("escape", true)
}