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// Copyright (c) 2018 David Crawshaw <david@zentus.com>
// Copyright (c) 2021 Roxy Light <roxy@zombiezen.com>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// SPDX-License-Identifier: ISC
package sqlitefile
import (
"bytes"
"context"
"io"
"testing"
"crawshaw.io/iox/ioxtest"
"zombiezen.com/go/sqlite"
"zombiezen.com/go/sqlite/sqlitex"
)
var _ interface {
io.Reader
io.Writer
io.StringWriter
io.ByteScanner
io.ByteWriter
io.Closer
} = (*Buffer)(nil)
func TestBuffer(t *testing.T) {
conn, err := sqlite.OpenConn(":memory:", 0)
if err != nil {
t.Fatal(err)
}
defer conn.Close()
data := make([]byte, 64*1024+1)
for i := 0; i < 64; i++ {
data[i*1024] = byte(i)
data[i*1024+1023] = byte(i)
}
buf, err := NewBufferSize(conn, 1024)
if err != nil {
t.Fatal(err)
}
if n, err := buf.Write(data); err != nil {
t.Fatal(err)
} else if n != len(data) {
t.Errorf("buf.Write(data) n=%d, want len(data)=%d", n, len(data))
}
if l := int(buf.Len()); l != len(data) {
t.Errorf("buf.Len()=%d, want %d", l, len(data))
}
got1 := make([]byte, 1024)
if n, err := buf.Read(got1); err != nil {
t.Fatal(err)
} else if n != len(got1) {
t.Errorf("buf.Read(got1) n=%d, want len(got1)=%d", n, len(got1))
}
if !bytes.Equal(got1, data[:len(got1)]) {
t.Errorf("got1 does not match, [0]=%d, [1]=%d, [1023]=%d", got1[0], got1[1], got1[1023])
}
if l := int(buf.Len()); l != len(data)-len(got1) {
t.Errorf("buf.Len()=%d, want %d", l, len(data)-len(got1))
}
b := new(bytes.Buffer)
b.Write(got1)
if _, err := io.Copy(b, buf); err != nil {
t.Errorf("io.Copy err=%v", err)
}
if !bytes.Equal(b.Bytes(), data) {
t.Errorf("b.Bytes and data do not match")
}
buf.Reset()
if _, err := buf.Write(got1); err != nil {
t.Fatal(err)
}
b.Reset()
if _, err := io.Copy(b, buf); err != nil {
t.Fatal(err)
}
if !bytes.Equal(b.Bytes(), got1) {
t.Errorf("b.Bytes and got1 do not match")
}
if err := buf.Close(); err != nil {
t.Fatal(err)
}
}
func TestConcurrentBuffer(t *testing.T) {
// Make sure the shared cache table lock does not
// apply to blob buffers (because we use temp tables).
dbpool, err := sqlitex.NewPool("file::memory:?mode=memory", sqlitex.PoolOptions{
PoolSize: 2,
})
if err != nil {
t.Fatal(err)
}
defer dbpool.Close()
conn1, err := dbpool.Take(context.Background())
if err != nil {
t.Fatal(err)
}
defer dbpool.Put(conn1)
conn2, err := dbpool.Take(context.Background())
if err != nil {
t.Fatal(err)
}
defer dbpool.Put(conn2)
b1a, err := NewBuffer(conn1)
if err != nil {
t.Fatal(err)
}
defer b1a.Close()
b1b, err := NewBuffer(conn1)
if err != nil {
t.Fatal(err)
}
defer b1b.Close()
b2, err := NewBuffer(conn2)
if err != nil {
t.Fatal(err)
}
defer b2.Close()
}
func TestBufferRand(t *testing.T) {
conn, err := sqlite.OpenConn(":memory:", 0)
if err != nil {
t.Fatal(err)
}
defer conn.Close()
buf, err := NewBufferSize(conn, 1<<18)
if err != nil {
t.Fatal(err)
}
ft := ioxtest.Tester{
F1: buf,
F2: new(bytes.Buffer),
T: t,
}
ft.Run()
if err := buf.Close(); err != nil {
t.Fatal(err)
}
}
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