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// SPDX-FileCopyrightText: 2026 Stefan Majewsky <majewsky@gmx.net>
// SPDX-License-Identifier: Apache-2.0
package main_test
import (
"crypto/sha256"
"database/sql"
"fmt"
"strconv"
"testing"
"github.com/go-gorp/gorp/v3"
_ "github.com/mattn/go-sqlite3"
"go.xyrillian.de/oblast"
)
func BenchmarkSelect(b *testing.B) {
const (
totalRecordCount = 10000
selectedRecordCount = 1
)
db, err := sql.Open("sqlite3", "file:foobar?mode=memory&cache=shared")
if err != nil {
b.Fatal(err)
}
// fill in some random-looking, but deterministic data
_, err = db.Exec(`CREATE TABLE entries (id INTEGER, message TEXT)`)
if err != nil {
b.Fatal(err)
}
stmt, err := db.Prepare(`INSERT INTO entries (id, message) VALUES (?, ?)`)
if err != nil {
b.Fatal(err)
}
for idx := range totalRecordCount {
buf := sha256.Sum256([]byte(strconv.Itoa(idx)))
_, err = stmt.Exec(idx, fmt.Sprintf("sha256:%x", buf[:]))
if err != nil {
b.Fatal(err)
}
}
err = stmt.Close()
if err != nil {
b.Fatal(err)
}
// prepare the functions that will be benched
odb := oblast.NewDB(db, oblast.SqliteDialect())
gdb := gorp.DbMap{Db: db, Dialect: gorp.SqliteDialect{}}
type record struct {
ID int `db:"id"`
Message string `db:"message"`
}
query := `SELECT * FROM entries WHERE id < ` + strconv.Itoa(selectedRecordCount) //nolint:gosec
selectWithOblast := func(b *testing.B) {
records, err := oblast.Select[record](odb, query)
if err != nil {
b.Error(err)
}
if len(records) != selectedRecordCount {
b.Errorf("expected %d, but got %d records", selectedRecordCount, len(records))
}
}
selectWithGorp := func(b *testing.B) {
var records []record
_, err := gdb.Select(&records, query)
if err != nil {
b.Error(err)
}
if len(records) != selectedRecordCount {
b.Errorf("expected %d, but got %d records", selectedRecordCount, len(records))
}
}
selectWithSqlite := func(b *testing.B) {
var count int64
rows, err := db.Query(query)
if err != nil {
b.Error(err)
}
var (
id int64
message string
)
for rows.Next() {
err := rows.Scan(&id, &message)
if err != nil {
b.Error(err)
}
if id != 20000 && message != "" { // always true; ensures that values are not optimized away
count++
}
}
err = rows.Close()
if err != nil {
b.Error(err)
}
if count != selectedRecordCount {
b.Errorf("expected %d, but got %d records", selectedRecordCount, count)
}
}
// run once to prewarm caches
selectWithOblast(b)
selectWithGorp(b)
if b.Failed() {
b.FailNow()
}
// run actual benchmark
b.Run("via Gorp", func(b *testing.B) {
for range b.N {
selectWithGorp(b)
}
})
b.Run("via Oblast", func(b *testing.B) {
for range b.N {
selectWithOblast(b)
}
})
b.Run("just SQLite", func(b *testing.B) {
for range b.N {
selectWithSqlite(b)
}
})
}
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