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// Copyright 2014-2022 Ulrich Kunitz. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package xz
import (
"bytes"
"testing"
)
func TestHeader(t *testing.T) {
h := header{flags: CRC32}
data, err := h.MarshalBinary()
if err != nil {
t.Fatalf("MarshalBinary error %s", err)
}
var g header
if err = g.UnmarshalBinary(data); err != nil {
t.Fatalf("UnmarshalBinary error %s", err)
}
if g != h {
t.Fatalf("unmarshalled %#v; want %#v", g, h)
}
}
func TestFooter(t *testing.T) {
f := footer{indexSize: 64, flags: CRC32}
data, err := f.MarshalBinary()
if err != nil {
t.Fatalf("MarshalBinary error %s", err)
}
var g footer
if err = g.UnmarshalBinary(data); err != nil {
t.Fatalf("UnmarshalBinary error %s", err)
}
if g != f {
t.Fatalf("unmarshalled %#v; want %#v", g, f)
}
}
func TestRecord(t *testing.T) {
r := record{1234567, 10000}
p, err := r.MarshalBinary()
if err != nil {
t.Fatalf("MarshalBinary error %s", err)
}
n := len(p)
buf := bytes.NewReader(p)
g, m, err := readRecord(buf)
if err != nil {
t.Fatalf("readFrom error %s", err)
}
if m != n {
t.Fatalf("read %d bytes; wrote %d", m, n)
}
if g.unpaddedSize != r.unpaddedSize {
t.Fatalf("got unpaddedSize %d; want %d", g.unpaddedSize,
r.unpaddedSize)
}
if g.uncompressedSize != r.uncompressedSize {
t.Fatalf("got uncompressedSize %d; want %d", g.uncompressedSize,
r.uncompressedSize)
}
}
func TestIndex(t *testing.T) {
records := []record{{1234, 1}, {2345, 2}}
var buf bytes.Buffer
n, err := writeIndex(&buf, records)
if err != nil {
t.Fatalf("writeIndex error %s", err)
}
if n != int64(buf.Len()) {
t.Fatalf("writeIndex returned %d; want %d", n, buf.Len())
}
// indicator
c, err := buf.ReadByte()
if err != nil {
t.Fatalf("buf.ReadByte error %s", err)
}
if c != 0 {
t.Fatalf("indicator %d; want %d", c, 0)
}
g, m, err := readIndexBody(&buf, len(records))
if err != nil {
for i, r := range g {
t.Logf("records[%d] %v", i, r)
}
t.Fatalf("readIndexBody error %s", err)
}
if m != n-1 {
t.Fatalf("readIndexBody returned %d; want %d", m, n-1)
}
for i, rec := range records {
if g[i] != rec {
t.Errorf("records[%d] is %v; want %v", i, g[i], rec)
}
}
}
func TestBlockHeader(t *testing.T) {
h := blockHeader{
compressedSize: 1234,
uncompressedSize: -1,
filters: []filter{&lzmaFilter{4096}},
}
data, err := h.MarshalBinary()
if err != nil {
t.Fatalf("MarshalBinary error %s", err)
}
r := bytes.NewReader(data)
g, n, err := readBlockHeader(r)
if err != nil {
t.Fatalf("readBlockHeader error %s", err)
}
if n != len(data) {
t.Fatalf("readBlockHeader returns %d bytes; want %d", n,
len(data))
}
if g.compressedSize != h.compressedSize {
t.Errorf("got compressedSize %d; want %d",
g.compressedSize, h.compressedSize)
}
if g.uncompressedSize != h.uncompressedSize {
t.Errorf("got uncompressedSize %d; want %d",
g.uncompressedSize, h.uncompressedSize)
}
if len(g.filters) != len(h.filters) {
t.Errorf("got len(filters) %d; want %d",
len(g.filters), len(h.filters))
}
glf := g.filters[0].(*lzmaFilter)
hlf := h.filters[0].(*lzmaFilter)
if glf.dictCap != hlf.dictCap {
t.Errorf("got dictCap %d; want %d", glf.dictCap, hlf.dictCap)
}
}
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