// object). When `len(partSizes) == 1`, asMultipart is used to upload
// the object as multipart with 1 part or as a regular single object.
//
// All upload failures are considered test errors - this function is
// intended as a helper for other tests.
func uploadTestObject(t *testing.T, apiRouter http.Handler, creds auth.Credentials, bucketName, objectName string,

	PartETags          []string          `json:"PartETags" msg:"PartETags,allownil"`             // Part ETags
	PartSizes          []int64           `json:"PartSizes" msg:"PartSizes"`                      // Part Sizes
	PartActualSizes    []int64           `json:"PartASizes,omitempty" msg:"PartASizes,allownil"` // Part ActualSizes (compression)

				return nil, fmt.Errorf("size mismatch. Meta size: %d, Prev: %d", ei.V2Obj.Size, m.objSize)
			}
			for i, s := range ei.V2Obj.PartNums {
				if s == partNum {
					m.size = ei.V2Obj.PartSizes[i]
					m.partSize = ei.V2Obj.PartSizes[i]
					break
				}
			}
		} else {
			return nil, err
		}

		offset := ei.V2Obj.EcBSize * blockNum
		if offset >= m.size {