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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"
"go.xyrillian.de/oblast/internal/assert"
)
const totalRecordCount = 1000
func makeTestDB(t testing.TB) (*sql.DB, error) {
db, err := sql.Open("sqlite3", fmt.Sprintf("file:%s?mode=memory&cache=shared", t.Name()))
if err != nil {
return nil, err
}
// fill in some random-looking, but deterministic data
_, err = db.Exec(`CREATE TABLE entries (id INTEGER, message TEXT)`)
if err != nil {
return nil, err
}
stmt, err := db.Prepare(`INSERT INTO entries (id, message) VALUES (?, ?)`)
if err != nil {
return nil, err
}
for idx := range totalRecordCount {
buf := sha256.Sum256([]byte(strconv.Itoa(idx)))
_, err = stmt.Exec(idx, fmt.Sprintf("sha256:%x", buf[:]))
if err != nil {
return nil, err
}
}
err = stmt.Close()
if err != nil {
return nil, err
}
return db, nil
}
func BenchmarkSelectMany(b *testing.B) {
db, err := makeTestDB(b)
if err != nil {
b.Fatal(err)
}
// test with different sizes of resultsets (N=1 is an OLTP-like workload,
// then the larger N lean more towards the OLAP side of things)
for selectedRecordCount := 1; selectedRecordCount < totalRecordCount; selectedRecordCount *= 10 {
b.Run("N="+strconv.Itoa(selectedRecordCount), func(b *testing.B) {
// prepare the functions that will be benched
type record struct {
ID int `db:"id"`
Message string `db:"message"`
}
store, err := oblast.NewStore[record](
oblast.SqliteDialect(),
oblast.TableNameIs("entries"),
)
if err != nil {
b.Fatal(err)
}
gdb := gorp.DbMap{Db: db, Dialect: gorp.SqliteDialect{}}
partialQuery := `id < ` + strconv.Itoa(selectedRecordCount)
query := `SELECT * FROM entries WHERE ` + partialQuery //nolint:gosec
selectWithOblast := func(b *testing.B) {
records, err := store.Select(db, query)
if err != nil {
b.Error(err)
}
assert.Equal(b, len(records), selectedRecordCount)
}
selectWithOblastWhere := func(b *testing.B) {
records, err := store.SelectWhere(db, partialQuery)
if err != nil {
b.Error(err)
}
assert.Equal(b, len(records), selectedRecordCount)
}
selectWithGorp := func(b *testing.B) {
var records []record
_, err := gdb.Select(&records, query)
if err != nil {
b.Error(err)
}
assert.Equal(b, len(records), selectedRecordCount)
}
selectWithSqlite := func(b *testing.B) {
var count int
rows, err := db.Query(query) //nolint:rowserrcheck // false positive
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)
}
assert.Equal(b, count, selectedRecordCount)
}
// run once to prewarm caches
selectWithOblast(b)
selectWithGorp(b)
if b.Failed() {
b.FailNow()
}
// run actual benchmark
b.Run("via Gorp using Select", func(b *testing.B) {
for range b.N {
selectWithGorp(b)
}
})
b.Run("via Oblast using Select", func(b *testing.B) {
for range b.N {
selectWithOblast(b)
}
})
b.Run("via Oblast using SelectWhere", func(b *testing.B) {
for range b.N {
selectWithOblastWhere(b)
}
})
b.Run("just SQLite", func(b *testing.B) {
for range b.N {
selectWithSqlite(b)
}
})
})
}
}
func BenchmarkSelectOne(b *testing.B) {
db, err := makeTestDB(b)
if err != nil {
b.Fatal(err)
}
// grab a "random" record from the DB, not just the first or the last
recordID := min(totalRecordCount*2/3, totalRecordCount)
// prepare the functions that will be benched
type record struct {
ID int `db:"id"`
Message string `db:"message"`
}
store, err := oblast.NewStore[record](
oblast.SqliteDialect(),
oblast.TableNameIs("entries"),
)
if err != nil {
b.Fatal(err)
}
gdb := gorp.DbMap{Db: db, Dialect: gorp.SqliteDialect{}}
partialQuery := `id = ` + strconv.Itoa(recordID)
query := `SELECT * FROM entries WHERE ` + partialQuery
selectWithOblast := func(b *testing.B) {
r, err := store.SelectOne(db, query)
if err != nil {
b.Error(err)
}
assert.Equal(b, r.ID, recordID)
}
selectWithOblastWhere := func(b *testing.B) {
r, err := store.SelectOneWhere(db, partialQuery)
if err != nil {
b.Error(err)
}
assert.Equal(b, r.ID, recordID)
}
selectWithGorp := func(b *testing.B) {
var r record
err := gdb.SelectOne(&r, query)
if err != nil {
b.Error(err)
}
assert.Equal(b, r.ID, recordID)
}
selectWithSqlite := func(b *testing.B) {
var (
id int64
message string
)
err := db.QueryRow(query).Scan(&id, &message)
if err != nil {
b.Error(err)
}
assert.Equal(b, id, int64(recordID))
}
// run once to prewarm caches
selectWithOblast(b)
selectWithGorp(b)
if b.Failed() {
b.FailNow()
}
// run actual benchmark
b.Run("via Gorp using SelectOne", func(b *testing.B) {
for range b.N {
selectWithGorp(b)
}
})
b.Run("via Oblast using SelectOne", func(b *testing.B) {
for range b.N {
selectWithOblast(b)
}
})
b.Run("via Oblast using SelectOneWhere", func(b *testing.B) {
for range b.N {
selectWithOblastWhere(b)
}
})
b.Run("just SQLite", func(b *testing.B) {
for range b.N {
selectWithSqlite(b)
}
})
}
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