File size: 4,648 Bytes
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package net
//no http range
//
import (
"bytes"
"context"
"fmt"
"io"
"net/http"
"sync"
"testing"
"github.com/alist-org/alist/v3/pkg/http_range"
"github.com/sirupsen/logrus"
"golang.org/x/exp/slices"
)
var buf22MB = make([]byte, 1024*1024*22)
func dummyHttpRequest(data []byte, p http_range.Range) io.ReadCloser {
end := p.Start + p.Length - 1
if end >= int64(len(data)) {
end = int64(len(data))
}
bodyBytes := data[p.Start:end]
return io.NopCloser(bytes.NewReader(bodyBytes))
}
func TestDownloadOrder(t *testing.T) {
buff := []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
downloader, invocations, ranges := newDownloadRangeClient(buff)
con, partSize := 3, 3
d := NewDownloader(func(d *Downloader) {
d.Concurrency = con
d.PartSize = partSize
d.HttpClient = downloader.HttpRequest
})
var start, length int64 = 2, 10
length2 := length
if length2 == -1 {
length2 = int64(len(buff)) - start
}
req := &HttpRequestParams{
Range: http_range.Range{Start: start, Length: length},
Size: int64(len(buff)),
}
readCloser, err := d.Download(context.Background(), req)
if err != nil {
t.Fatalf("expect no error, got %v", err)
}
resultBuf, err := io.ReadAll(readCloser)
if err != nil {
t.Fatalf("expect no error, got %v", err)
}
if exp, a := int(length), len(resultBuf); exp != a {
t.Errorf("expect buffer length=%d, got %d", exp, a)
}
chunkSize := int(length)/partSize + 1
if int(length)%partSize == 0 {
chunkSize--
}
if e, a := chunkSize, *invocations; e != a {
t.Errorf("expect %v API calls, got %v", e, a)
}
expectRngs := []string{"2-3", "5-3", "8-3", "11-1"}
for _, rng := range expectRngs {
if !slices.Contains(*ranges, rng) {
t.Errorf("expect range %v, but absent in return", rng)
}
}
if e, a := expectRngs, *ranges; len(e) != len(a) {
t.Errorf("expect %v ranges, got %v", e, a)
}
}
func init() {
Formatter := new(logrus.TextFormatter)
Formatter.TimestampFormat = "2006-01-02T15:04:05.999999999"
Formatter.FullTimestamp = true
Formatter.ForceColors = true
logrus.SetFormatter(Formatter)
logrus.SetLevel(logrus.DebugLevel)
logrus.Debugf("Download start")
}
func TestDownloadSingle(t *testing.T) {
buff := []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
downloader, invocations, ranges := newDownloadRangeClient(buff)
con, partSize := 1, 3
d := NewDownloader(func(d *Downloader) {
d.Concurrency = con
d.PartSize = partSize
d.HttpClient = downloader.HttpRequest
})
var start, length int64 = 2, 10
req := &HttpRequestParams{
Range: http_range.Range{Start: start, Length: length},
Size: int64(len(buff)),
}
readCloser, err := d.Download(context.Background(), req)
if err != nil {
t.Fatalf("expect no error, got %v", err)
}
resultBuf, err := io.ReadAll(readCloser)
if err != nil {
t.Fatalf("expect no error, got %v", err)
}
if exp, a := int(length), len(resultBuf); exp != a {
t.Errorf("expect buffer length=%d, got %d", exp, a)
}
if e, a := 1, *invocations; e != a {
t.Errorf("expect %v API calls, got %v", e, a)
}
expectRngs := []string{"2-10"}
for _, rng := range expectRngs {
if !slices.Contains(*ranges, rng) {
t.Errorf("expect range %v, but absent in return", rng)
}
}
if e, a := expectRngs, *ranges; len(e) != len(a) {
t.Errorf("expect %v ranges, got %v", e, a)
}
}
type downloadCaptureClient struct {
mockedHttpRequest func(params *HttpRequestParams) (*http.Response, error)
GetObjectInvocations int
RetrievedRanges []string
lock sync.Mutex
}
func (c *downloadCaptureClient) HttpRequest(ctx context.Context, params *HttpRequestParams) (*http.Response, error) {
c.lock.Lock()
defer c.lock.Unlock()
c.GetObjectInvocations++
if ¶ms.Range != nil {
c.RetrievedRanges = append(c.RetrievedRanges, fmt.Sprintf("%d-%d", params.Range.Start, params.Range.Length))
}
return c.mockedHttpRequest(params)
}
func newDownloadRangeClient(data []byte) (*downloadCaptureClient, *int, *[]string) {
capture := &downloadCaptureClient{}
capture.mockedHttpRequest = func(params *HttpRequestParams) (*http.Response, error) {
start, fin := params.Range.Start, params.Range.Start+params.Range.Length
if params.Range.Length == -1 || fin >= int64(len(data)) {
fin = int64(len(data))
}
bodyBytes := data[start:fin]
header := &http.Header{}
header.Set("Content-Range", fmt.Sprintf("bytes %d-%d/%d", start, fin-1, len(data)))
return &http.Response{
Body: io.NopCloser(bytes.NewReader(bodyBytes)),
Header: *header,
ContentLength: int64(len(bodyBytes)),
}, nil
}
return capture, &capture.GetObjectInvocations, &capture.RetrievedRanges
}
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