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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 go1.13,cgo
package sqlite3
import (
"context"
"database/sql"
"database/sql/driver"
"errors"
"os"
"testing"
)
func TestBeginTxCancel(t *testing.T) {
srcTempFilename := TempFilename(t)
defer os.Remove(srcTempFilename)
db, err := sql.Open("sqlite3", srcTempFilename)
if err != nil {
t.Fatal(err)
}
db.SetMaxOpenConns(10)
db.SetMaxIdleConns(5)
defer db.Close()
initDatabase(t, db, 100)
// create several go-routines to expose racy issue
for i := 0; i < 1000; i++ {
func() {
ctx, cancel := context.WithCancel(context.Background())
conn, err := db.Conn(ctx)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := conn.Close(); err != nil {
t.Error(err)
}
}()
err = conn.Raw(func(driverConn interface{}) error {
d, ok := driverConn.(driver.ConnBeginTx)
if !ok {
t.Fatal("unexpected: wrong type")
}
// checks that conn.Raw can be used to get *SQLiteConn
if _, ok = driverConn.(*SQLiteConn); !ok {
t.Fatalf("conn.Raw() driverConn type=%T, expected *SQLiteConn", driverConn)
}
go cancel() // make it cancel concurrently with exec("BEGIN");
tx, err := d.BeginTx(ctx, driver.TxOptions{})
switch err {
case nil:
switch err := tx.Rollback(); err {
case nil, sql.ErrTxDone:
default:
return err
}
case context.Canceled:
default:
// must not fail with "cannot start a transaction within a transaction"
return err
}
return nil
})
if err != nil {
t.Fatal(err)
}
}()
}
}
func TestStmtReadonly(t *testing.T) {
db, err := sql.Open("sqlite3", ":memory:")
if err != nil {
t.Fatal(err)
}
_, err = db.Exec("CREATE TABLE t (count INT)")
if err != nil {
t.Fatal(err)
}
isRO := func(query string) bool {
c, err := db.Conn(context.Background())
if err != nil {
return false
}
var ro bool
c.Raw(func(dc interface{}) error {
stmt, err := dc.(*SQLiteConn).Prepare(query)
if err != nil {
return err
}
if stmt == nil {
return errors.New("stmt is nil")
}
ro = stmt.(*SQLiteStmt).Readonly()
return nil
})
return ro // On errors ro will remain false.
}
if !isRO(`select * from t`) {
t.Error("select not seen as read-only")
}
if isRO(`insert into t values (1), (2)`) {
t.Error("insert seen as read-only")
}
}
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