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|
//go:build amd64 && !appengine && !noasm && gc
// +build amd64,!appengine,!noasm,gc
package zstd
import (
"bytes"
"encoding/csv"
"fmt"
"io"
"os"
"reflect"
"strconv"
"testing"
"github.com/klauspost/compress/internal/cpuinfo"
"github.com/klauspost/compress/zip"
)
func Benchmark_seqdec_decodeNoBMI(b *testing.B) {
if !cpuinfo.HasBMI2() {
b.Skip("Already tested, platform does not have bmi2")
return
}
defer cpuinfo.DisableBMI2()()
benchmark_seqdec_decode(b)
}
func Test_sequenceDecs_decodeNoBMI(t *testing.T) {
if !cpuinfo.HasBMI2() {
t.Skip("Already tested, platform does not have bmi2")
return
}
defer cpuinfo.DisableBMI2()()
const writeWant = false
var buf bytes.Buffer
zw := zip.NewWriter(&buf)
want := map[string][]seqVals{}
var wantOffsets = map[string][3]int{}
if !writeWant {
fn := "testdata/seqs-want.zip"
data, err := os.ReadFile(fn)
tb := t
if err != nil {
tb.Fatal(err)
}
zr, err := zip.NewReader(bytes.NewReader(data), int64(len(data)))
if err != nil {
tb.Fatal(err)
}
for _, tt := range zr.File {
var ref testSequence
if !ref.parse(tt.Name) {
tb.Skip("unable to parse:", tt.Name)
}
o, err := tt.Open()
if err != nil {
t.Fatal(err)
}
r := csv.NewReader(o)
recs, err := r.ReadAll()
if err != nil {
t.Fatal(err)
}
for i, rec := range recs {
if i == 0 {
var o [3]int
o[0], _ = strconv.Atoi(rec[0])
o[1], _ = strconv.Atoi(rec[1])
o[2], _ = strconv.Atoi(rec[2])
wantOffsets[tt.Name] = o
continue
}
s := seqVals{}
s.mo, _ = strconv.Atoi(rec[0])
s.ml, _ = strconv.Atoi(rec[1])
s.ll, _ = strconv.Atoi(rec[2])
want[tt.Name] = append(want[tt.Name], s)
}
o.Close()
}
}
fn := "testdata/seqs.zip"
data, err := os.ReadFile(fn)
tb := t
if err != nil {
tb.Fatal(err)
}
zr, err := zip.NewReader(bytes.NewReader(data), int64(len(data)))
if err != nil {
tb.Fatal(err)
}
for _, tt := range zr.File {
var ref testSequence
if !ref.parse(tt.Name) {
tb.Skip("unable to parse:", tt.Name)
}
r, err := tt.Open()
if err != nil {
tb.Error(err)
return
}
seqData, err := io.ReadAll(r)
if err != nil {
tb.Error(err)
return
}
var buf = bytes.NewBuffer(seqData)
s := readDecoders(tb, buf, ref)
seqs := make([]seqVals, ref.n)
t.Run(tt.Name, func(t *testing.T) {
fatalIf := func(err error) {
if err != nil {
t.Fatal(err)
}
}
fatalIf(s.br.init(buf.Bytes()))
fatalIf(s.litLengths.init(s.br))
fatalIf(s.offsets.init(s.br))
fatalIf(s.matchLengths.init(s.br))
err := s.decode(seqs)
if err != nil {
t.Error(err)
}
if writeWant {
w, err := zw.Create(tt.Name)
fatalIf(err)
c := csv.NewWriter(w)
w.Write([]byte(fmt.Sprintf("%d,%d,%d\n", s.prevOffset[0], s.prevOffset[1], s.prevOffset[2])))
for _, seq := range seqs {
c.Write([]string{strconv.Itoa(seq.mo), strconv.Itoa(seq.ml), strconv.Itoa(seq.ll)})
}
c.Flush()
} else {
if s.prevOffset != wantOffsets[tt.Name] {
t.Errorf("want offsets %v, got %v", wantOffsets[tt.Name], s.prevOffset)
}
if !reflect.DeepEqual(want[tt.Name], seqs) {
t.Errorf("got %v\nwant %v", seqs, want[tt.Name])
}
}
})
}
if writeWant {
zw.Close()
os.WriteFile("testdata/seqs-want.zip", buf.Bytes(), os.ModePerm)
}
}
|
