testHelper <- function(c1, rds) {
  c2 <- readRDS(rds)

  c1n <- names(c1)
  c2n <- names(c2)
  cn <- intersect(c1n, c2n)
  c1c <- c1n[!c1n %in% cn]
  c2c <- c2n[!c2n %in% cn]
  if (length(c1c) > 0) {
    cat(paste0("Error: elements in c1, not in c2: ", paste(c1c, collapse = ", "), "\n"))
  }
  if (length(c2c) > 0) {
    cat(paste0("Error: elements in c2, not in c1: ", paste(c2c, collapse = ", "), "\n"))
  }
  for (i in 1:length(cn)) {
    ae <- all.equal(c1[[cn[i]]], c2[[cn[i]]])
    if (length(ae) == 1 & ae[1] == TRUE) {

    } else {
      cat("name:", cn[i], "\n")
      cat("c1:\n")
      print(c1[[cn[i]]])
      cat("c2:\n")
      print(c2[[cn[i]]])
    }
  }

  c1 <- attributes(c1)
  c2 <- attributes(c2)
  c1n <- names(c1)
  c2n <- names(c2)
  cn <- intersect(c1n, c2n)
  c1c <- c1n[!c1n %in% cn]
  c2c <- c2n[!c2n %in% cn]
  if (length(c1c) > 0) {
    cat(paste0("Error: elements in c1 attributes, not in c2 attributes: ", paste(c1c, collapse = ", "), "\n"))
  }
  if (length(c2c) > 0) {
    cat(paste0("Error: elements in c2 attributes, not in c1 attributes: ", paste(c2c, collapse = ", "), "\n"))
  }
  for (i in 1:length(cn)) {
    ae <- all.equal(c1[[cn[i]]], c2[[cn[i]]])
    if (length(ae) == 1 & ae[1] == TRUE) {

    } else {
      cat("attribute name:", cn[i], "\n")
      cat("c1:\n")
      print(c1[[cn[i]]])
      cat("c2:\n")
      print(c2[[cn[i]]])
    }
  }
}