apiRouter.ServeHTTP(rec, req)
		if rec.Code != http.StatusOK {
			t.Fatalf("Test failed to create HTTP request for copy %d", rec.Code)
		}

		resp := &CopyObjectPartResponse{}
		if err = xmlDecoder(rec.Body, resp, rec.Result().ContentLength); err != nil {
			t.Fatalf("Test failed to decode XML response: <ERROR> %v", err)
		}

		parts = append(parts, CompletePart{
			PartNumber: partNumber,