mirror of
https://github.com/octoleo/restic.git
synced 2024-11-16 18:15:20 +00:00
109 lines
2.6 KiB
Go
109 lines
2.6 KiB
Go
package limiter
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/rand"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"testing"
|
|
|
|
"github.com/restic/restic/internal/test"
|
|
)
|
|
|
|
func TestLimiterWrapping(t *testing.T) {
|
|
reader := bytes.NewReader([]byte{})
|
|
writer := new(bytes.Buffer)
|
|
|
|
for _, limits := range []struct {
|
|
upstream int
|
|
downstream int
|
|
}{
|
|
{0, 0},
|
|
{42, 0},
|
|
{0, 42},
|
|
{42, 42},
|
|
} {
|
|
limiter := NewStaticLimiter(limits.upstream*1024, limits.downstream*1024)
|
|
|
|
mustWrapUpstream := limits.upstream > 0
|
|
test.Equals(t, limiter.Upstream(reader) != reader, mustWrapUpstream)
|
|
test.Equals(t, limiter.UpstreamWriter(writer) != writer, mustWrapUpstream)
|
|
|
|
mustWrapDownstream := limits.downstream > 0
|
|
test.Equals(t, limiter.Downstream(reader) != reader, mustWrapDownstream)
|
|
test.Equals(t, limiter.DownstreamWriter(writer) != writer, mustWrapDownstream)
|
|
}
|
|
}
|
|
|
|
type tracedReadCloser struct {
|
|
io.Reader
|
|
Closed bool
|
|
}
|
|
|
|
func newTracedReadCloser(rd io.Reader) *tracedReadCloser {
|
|
return &tracedReadCloser{Reader: rd}
|
|
}
|
|
|
|
func (r *tracedReadCloser) Close() error {
|
|
r.Closed = true
|
|
return nil
|
|
}
|
|
|
|
func TestRoundTripperReader(t *testing.T) {
|
|
limiter := NewStaticLimiter(42*1024, 42*1024)
|
|
data := make([]byte, 1234)
|
|
_, err := io.ReadFull(rand.Reader, data)
|
|
test.OK(t, err)
|
|
|
|
var send *tracedReadCloser = newTracedReadCloser(bytes.NewReader(data))
|
|
var recv *tracedReadCloser
|
|
|
|
rt := limiter.Transport(roundTripper(func(req *http.Request) (*http.Response, error) {
|
|
buf := new(bytes.Buffer)
|
|
_, err := io.Copy(buf, req.Body)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = req.Body.Close()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
recv = newTracedReadCloser(bytes.NewReader(buf.Bytes()))
|
|
return &http.Response{Body: recv}, nil
|
|
}))
|
|
|
|
res, err := rt.RoundTrip(&http.Request{Body: send})
|
|
test.OK(t, err)
|
|
|
|
out := new(bytes.Buffer)
|
|
n, err := io.Copy(out, res.Body)
|
|
test.OK(t, err)
|
|
test.Equals(t, int64(len(data)), n)
|
|
test.OK(t, res.Body.Close())
|
|
|
|
test.Assert(t, send.Closed, "request body not closed")
|
|
test.Assert(t, recv.Closed, "result body not closed")
|
|
test.Assert(t, bytes.Equal(data, out.Bytes()), "data ping-pong failed")
|
|
}
|
|
|
|
func TestRoundTripperCornerCases(t *testing.T) {
|
|
limiter := NewStaticLimiter(42*1024, 42*1024)
|
|
|
|
rt := limiter.Transport(roundTripper(func(req *http.Request) (*http.Response, error) {
|
|
return &http.Response{}, nil
|
|
}))
|
|
|
|
res, err := rt.RoundTrip(&http.Request{})
|
|
test.OK(t, err)
|
|
test.Assert(t, res != nil, "round tripper returned no response")
|
|
|
|
rt = limiter.Transport(roundTripper(func(req *http.Request) (*http.Response, error) {
|
|
return nil, fmt.Errorf("error")
|
|
}))
|
|
|
|
_, err = rt.RoundTrip(&http.Request{})
|
|
test.Assert(t, err != nil, "round tripper lost an error")
|
|
}
|