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package bolt
import (
"io/ioutil"
"math/rand"
"os"
"strconv"
"strings"
"testing"
"github.com/stretchr/testify/assert"
)
// Ensure that a database can be opened without error.
func TestOpen(t *testing.T) {
f, _ := ioutil.TempFile("", "bolt-")
path := f.Name()
f.Close()
os.Remove(path)
defer os.RemoveAll(path)
db, err := Open(path, 0666)
assert.NoError(t, err)
assert.NotNil(t, db)
db.Close()
}
// Ensure that opening a database with a bad path returns an error.
func TestOpenBadPath(t *testing.T) {
db, err := Open("/../bad-path", 0666)
assert.Error(t, err)
assert.Nil(t, db)
}
// Ensure that a database can be opened without error.
func TestDBOpen(t *testing.T) {
withDB(func(db *DB, path string) {
err := db.Open(path, 0666)
assert.NoError(t, err)
assert.Equal(t, db.Path(), path)
})
}
// Ensure that the database returns an error if already open.
func TestDBReopen(t *testing.T) {
withDB(func(db *DB, path string) {
db.Open(path, 0666)
err := db.Open(path, 0666)
assert.Equal(t, err, ErrDatabaseOpen)
})
}
// Ensure that a database cannot open a transaction when it's not open.
func TestDBTxErrDatabaseNotOpen(t *testing.T) {
withDB(func(db *DB, path string) {
tx, err := db.Tx()
assert.Nil(t, tx)
assert.Equal(t, err, ErrDatabaseNotOpen)
})
}
// Ensure that a read-write transaction can be retrieved.
func TestDBRWTx(t *testing.T) {
withOpenDB(func(db *DB, path string) {
tx, err := db.RWTx()
assert.NotNil(t, tx)
assert.NoError(t, err)
assert.Equal(t, tx.DB(), db)
assert.Equal(t, tx.Writable(), true)
})
}
// Ensure that opening a transaction while the DB is closed returns an error.
func TestDBRWTxOpenWithClosedDB(t *testing.T) {
withDB(func(db *DB, path string) {
tx, err := db.RWTx()
assert.Equal(t, err, ErrDatabaseNotOpen)
assert.Nil(t, tx)
})
}
// Ensure a database can provide a transactional block.
func TestDBTxBlock(t *testing.T) {
withOpenDB(func(db *DB, path string) {
err := db.Do(func(tx *Tx) error {
tx.CreateBucket("widgets")
b := tx.Bucket("widgets")
b.Put([]byte("foo"), []byte("bar"))
b.Put([]byte("baz"), []byte("bat"))
b.Delete([]byte("foo"))
return nil
})
assert.NoError(t, err)
err = db.With(func(tx *Tx) error {
assert.Nil(t, tx.Bucket("widgets").Get([]byte("foo")))
assert.Equal(t, []byte("bat"), tx.Bucket("widgets").Get([]byte("baz")))
return nil
})
assert.NoError(t, err)
})
}
// Ensure a closed database returns an error while running a transaction block
func TestDBTxBlockWhileClosed(t *testing.T) {
withDB(func(db *DB, path string) {
err := db.Do(func(tx *Tx) error {
tx.CreateBucket("widgets")
return nil
})
assert.Equal(t, err, ErrDatabaseNotOpen)
})
}
// Ensure that the database can be copied to a file path.
func TestDBCopyFile(t *testing.T) {
withOpenDB(func(db *DB, path string) {
db.Do(func(tx *Tx) error {
tx.CreateBucket("widgets")
tx.Bucket("widgets").Put([]byte("foo"), []byte("bar"))
tx.Bucket("widgets").Put([]byte("baz"), []byte("bat"))
return nil
})
assert.NoError(t, os.RemoveAll("/tmp/bolt.copyfile.db"))
assert.NoError(t, db.CopyFile("/tmp/bolt.copyfile.db", 0666))
var db2 DB
assert.NoError(t, db2.Open("/tmp/bolt.copyfile.db", 0666))
defer db2.Close()
db2.With(func(tx *Tx) error {
assert.Equal(t, []byte("bar"), tx.Bucket("widgets").Get([]byte("foo")))
assert.Equal(t, []byte("bat"), tx.Bucket("widgets").Get([]byte("baz")))
return nil
})
})
}
// Ensure the database can return stats about itself.
func TestDBStat(t *testing.T) {
withOpenDB(func(db *DB, path string) {
db.Do(func(tx *Tx) error {
tx.CreateBucket("widgets")
b := tx.Bucket("widgets")
for i := 0; i < 10000; i++ {
b.Put([]byte(strconv.Itoa(i)), []byte(strconv.Itoa(i)))
}
return nil
})
// Delete some keys.
db.Do(func(tx *Tx) error {
return tx.Bucket("widgets").Delete([]byte("10"))
})
db.Do(func(tx *Tx) error {
return tx.Bucket("widgets").Delete([]byte("1000"))
})
// Open some readers.
t0, _ := db.Tx()
t1, _ := db.Tx()
t2, _ := db.Tx()
t2.Rollback()
// Obtain stats.
stat, err := db.Stat()
assert.NoError(t, err)
assert.Equal(t, stat.PageCount, 128)
assert.Equal(t, stat.FreePageCount, 2)
assert.Equal(t, stat.PageSize, 4096)
assert.Equal(t, stat.MmapSize, 4194304)
assert.Equal(t, stat.TxCount, 2)
// Close readers.
t0.Rollback()
t1.Rollback()
})
}
// Ensure the getting stats on a closed database returns an error.
func TestDBStatWhileClosed(t *testing.T) {
withDB(func(db *DB, path string) {
stat, err := db.Stat()
assert.Equal(t, err, ErrDatabaseNotOpen)
assert.Nil(t, stat)
})
}
// Ensure that an error is returned when a database write fails.
func TestDBWriteFail(t *testing.T) {
t.Skip("pending") // TODO(benbjohnson)
}
// Ensure that the mmap grows appropriately.
func TestDBMmapSize(t *testing.T) {
db := &DB{pageSize: 4096}
assert.Equal(t, db.mmapSize(0), minMmapSize)
assert.Equal(t, db.mmapSize(16384), minMmapSize)
assert.Equal(t, db.mmapSize(minMmapSize-1), minMmapSize)
assert.Equal(t, db.mmapSize(minMmapSize), minMmapSize*2)
assert.Equal(t, db.mmapSize(10000000), 20000768)
assert.Equal(t, db.mmapSize((1<<30)-1), 2147483648)
assert.Equal(t, db.mmapSize(1<<30), 1<<31)
}
// Ensure that a database can return a string representation of itself.
func TestDBString(t *testing.T) {
db := &DB{path: "/tmp/foo"}
assert.Equal(t, db.String(), `DB<"/tmp/foo">`)
assert.Equal(t, db.GoString(), `bolt.DB{path:"/tmp/foo"}`)
}
// Benchmark the performance of single put transactions in random order.
func BenchmarkDBPutSequential(b *testing.B) {
value := []byte(strings.Repeat("0", 64))
withOpenDB(func(db *DB, path string) {
db.Do(func(tx *Tx) error {
return tx.CreateBucket("widgets")
})
for i := 0; i < b.N; i++ {
db.Do(func(tx *Tx) error {
return tx.Bucket("widgets").Put([]byte(strconv.Itoa(i)), value)
})
}
})
}
// Benchmark the performance of single put transactions in random order.
func BenchmarkDBPutRandom(b *testing.B) {
indexes := rand.Perm(b.N)
value := []byte(strings.Repeat("0", 64))
withOpenDB(func(db *DB, path string) {
db.Do(func(tx *Tx) error {
return tx.CreateBucket("widgets")
})
for i := 0; i < b.N; i++ {
db.Do(func(tx *Tx) error {
return tx.Bucket("widgets").Put([]byte(strconv.Itoa(indexes[i])), value)
})
}
})
}
// withDB executes a function with a database reference.
func withDB(fn func(*DB, string)) {
f, _ := ioutil.TempFile("", "bolt-")
path := f.Name()
f.Close()
os.Remove(path)
defer os.RemoveAll(path)
var db DB
fn(&db, path)
}
// withOpenDB executes a function with an already opened database.
func withOpenDB(fn func(*DB, string)) {
withDB(func(db *DB, path string) {
if err := db.Open(path, 0666); err != nil {
panic("cannot open db: " + err.Error())
}
defer db.Close()
fn(db, path)
})
}
func trunc(b []byte, length int) []byte {
if length < len(b) {
return b[:length]
}
return b
}
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