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// Copyright (C) 2019 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
// +build sqlite_unlock_notify
package sqlite3
import (
"database/sql"
"fmt"
"os"
"sync"
"testing"
"time"
)
func TestUnlockNotify(t *testing.T) {
tempFilename := TempFilename(t)
defer os.Remove(tempFilename)
dsn := fmt.Sprintf("file:%s?cache=shared&mode=rwc&_busy_timeout=%d", tempFilename, 500)
db, err := sql.Open("sqlite3", dsn)
if err != nil {
t.Fatal("Failed to open database:", err)
}
defer db.Close()
_, err = db.Exec("CREATE TABLE foo(id INTEGER, status INTEGER)")
if err != nil {
t.Fatal("Failed to create table:", err)
}
tx, err := db.Begin()
if err != nil {
t.Fatal("Failed to begin transaction:", err)
}
_, err = tx.Exec("INSERT INTO foo(id, status) VALUES(1, 100)")
if err != nil {
t.Fatal("Failed to insert null:", err)
}
_, err = tx.Exec("UPDATE foo SET status = 200 WHERE id = 1")
if err != nil {
t.Fatal("Failed to update table:", err)
}
wg := sync.WaitGroup{}
wg.Add(1)
timer := time.NewTimer(500 * time.Millisecond)
go func() {
<-timer.C
err := tx.Commit()
if err != nil {
t.Fatal("Failed to commit transaction:", err)
}
wg.Done()
}()
rows, err := db.Query("SELECT count(*) from foo")
if err != nil {
t.Fatal("Unable to query foo table:", err)
}
if rows.Next() {
var count int
if err := rows.Scan(&count); err != nil {
t.Fatal("Failed to Scan rows", err)
}
}
if err := rows.Err(); err != nil {
t.Fatal("Failed at the call to Next:", err)
}
wg.Wait()
}
func TestUnlockNotifyMany(t *testing.T) {
tempFilename := TempFilename(t)
defer os.Remove(tempFilename)
dsn := fmt.Sprintf("file:%s?cache=shared&mode=rwc&_busy_timeout=%d", tempFilename, 500)
db, err := sql.Open("sqlite3", dsn)
if err != nil {
t.Fatal("Failed to open database:", err)
}
defer db.Close()
_, err = db.Exec("CREATE TABLE foo(id INTEGER, status INTEGER)")
if err != nil {
t.Fatal("Failed to create table:", err)
}
tx, err := db.Begin()
if err != nil {
t.Fatal("Failed to begin transaction:", err)
}
_, err = tx.Exec("INSERT INTO foo(id, status) VALUES(1, 100)")
if err != nil {
t.Fatal("Failed to insert null:", err)
}
_, err = tx.Exec("UPDATE foo SET status = 200 WHERE id = 1")
if err != nil {
t.Fatal("Failed to update table:", err)
}
wg := sync.WaitGroup{}
wg.Add(1)
timer := time.NewTimer(500 * time.Millisecond)
go func() {
<-timer.C
err := tx.Commit()
if err != nil {
t.Fatal("Failed to commit transaction:", err)
}
wg.Done()
}()
const concurrentQueries = 1000
wg.Add(concurrentQueries)
for i := 0; i < concurrentQueries; i++ {
go func() {
rows, err := db.Query("SELECT count(*) from foo")
if err != nil {
t.Fatal("Unable to query foo table:", err)
}
if rows.Next() {
var count int
if err := rows.Scan(&count); err != nil {
t.Fatal("Failed to Scan rows", err)
}
}
if err := rows.Err(); err != nil {
t.Fatal("Failed at the call to Next:", err)
}
wg.Done()
}()
}
wg.Wait()
}
func TestUnlockNotifyDeadlock(t *testing.T) {
tempFilename := TempFilename(t)
defer os.Remove(tempFilename)
dsn := fmt.Sprintf("file:%s?cache=shared&mode=rwc&_busy_timeout=%d", tempFilename, 500)
db, err := sql.Open("sqlite3", dsn)
if err != nil {
t.Fatal("Failed to open database:", err)
}
defer db.Close()
_, err = db.Exec("CREATE TABLE foo(id INTEGER, status INTEGER)")
if err != nil {
t.Fatal("Failed to create table:", err)
}
tx, err := db.Begin()
if err != nil {
t.Fatal("Failed to begin transaction:", err)
}
_, err = tx.Exec("INSERT INTO foo(id, status) VALUES(1, 100)")
if err != nil {
t.Fatal("Failed to insert null:", err)
}
_, err = tx.Exec("UPDATE foo SET status = 200 WHERE id = 1")
if err != nil {
t.Fatal("Failed to update table:", err)
}
wg := sync.WaitGroup{}
wg.Add(1)
timer := time.NewTimer(500 * time.Millisecond)
go func() {
<-timer.C
err := tx.Commit()
if err != nil {
t.Fatal("Failed to commit transaction:", err)
}
wg.Done()
}()
wg.Add(1)
go func() {
tx2, err := db.Begin()
if err != nil {
t.Fatal("Failed to begin transaction:", err)
}
defer tx2.Rollback()
_, err = tx2.Exec("DELETE FROM foo")
if err != nil {
t.Fatal("Failed to delete table:", err)
}
err = tx2.Commit()
if err != nil {
t.Fatal("Failed to commit transaction:", err)
}
wg.Done()
}()
rows, err := tx.Query("SELECT count(*) from foo")
if err != nil {
t.Fatal("Unable to query foo table:", err)
}
if rows.Next() {
var count int
if err := rows.Scan(&count); err != nil {
t.Fatal("Failed to Scan rows", err)
}
}
if err := rows.Err(); err != nil {
t.Fatal("Failed at the call to Next:", err)
}
wg.Wait()
}
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