func TestWriterReadFromMustReturnUnderlyingError(t *testing.T) {
	var wr = NewWriter(writeErrorOnlyWriter{})
	s := "test1"
	wantBuffered := len(s)
	if _, err := wr.WriteString(s); err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if err := wr.Flush(); err == nil {
		t.Error("expected flush error, got nil")
	}
	if _, err := wr.ReadFrom(strings.NewReader("test2")); err == nil {

			BucketName:      bucketName,
			ConditionValues: getConditionValues(r, "", cred),
			IsOwner:         owner,
			ObjectName:      "",
			Claims:          cred.Claims,
		}) {
			wr = true
		}

		return rd, wr
	}

	bucketStorageCache.InitOnce(10*time.Second,
		cachevalue.Opts{ReturnLastGood: true},
		func(ctx context.Context) (DataUsageInfo, error) {

	return nwe.error
}

func (pc *persistConn) writeLoop() {
	defer close(pc.writeLoopDone)
	for {
		select {
		case wr := <-pc.writech:
			startBytesWritten := pc.nwrite
			err := wr.req.Request.write(pc.bw, pc.isProxy, wr.req.extra, pc.waitForContinue(wr.continueCh))
			if bre, ok := err.(requestBodyReadError); ok {
				err = bre.error
				// Errors reading from the user's

	copy(dn, data[:zoffset])

	ozd, err := sec.Data()
	if err != nil {
		t.Fatal(err)
	}
	buf := bytes.NewBuffer(nil)
	wr := zlib.NewWriter(buf)
	// corrupt origin data same as COMPRESS_ZLIB
	copy(ozd, []byte{1, 0, 0, 0})
	wr.Write(ozd)
	wr.Close()

	copy(dn[zoffset:], buf.Bytes())
	copy(dn[sec.Offset+sec.FileSize:], data[sec.Offset+sec.FileSize:])

		rel.Type = objabi.R_ADDRMIPSTLS

	case 56: /* vmov{b,h,w,d} $scon, wr */

		v := c.regoff(&p.From)
		o1 = OP_VI10(110, c.twobitdf(p.As), v, uint32(p.To.Reg), 7)

	case 57: /* vld $soreg, wr */
		v := c.lsoffset(p.As, c.regoff(&p.From))
		o1 = OP_VMI10(v, uint32(p.From.Reg), uint32(p.To.Reg), 8, c.twobitdf(p.As))

	case 58: /* vst wr, $soreg */
		v := c.lsoffset(p.As, c.regoff(&p.To))