test_that("prep_undisclose works", {
  skip_on_cran() # slow, parallel, ...
  skip_if_not_installed("withr")
  withr::local_options(dataquieR.CONDITIONS_WITH_STACKTRACE = TRUE,
                       dataquieR.ERRORS_WITH_CALLER = TRUE,
                       dataquieR.WARNINGS_WITH_CALLER = TRUE,
                       dataquieR.MESSAGES_WITH_CALLER = TRUE)
  skip_if_offline(host = "dataquality.qihs.uni-greifswald.de")
  prep_load_workbook_like_file("https://dataquality.qihs.uni-greifswald.de/extdata/fortests/meta_data_v2.xlsx")
  study_data <- head(prep_get_data_frame("https://dataquality.qihs.uni-greifswald.de/extdata/fortests/study_data.RData"), 100)
  meta_data <- prep_get_data_frame("item_level")

  mlt <- prep_get_data_frame("https://dataquality.qihs.uni-greifswald.de/extdata/fortests/meta_data_v2.xlsx| missing_table")

  prep_purge_data_frame_cache()

  prep_add_data_frames(`missing_table` = mlt)

  invisible(testthat::capture_output_lines(gc(full = TRUE, verbose = FALSE)))

  sd0 <- study_data[, 1:5]
  sd0$v00012 <- study_data$v00012
  md0 <- subset(meta_data, VAR_NAMES %in% colnames(sd0))
  md0$PART_VAR <- NULL

  # md0$MISSING_LIST_TABLE <- NULL

  # don't include huge reports as RData in the package
  # Suppress warnings since we do not test dq_report2
  # here in the first place
  report <- dq_report2(sd0, md0,
                       resp_vars = c("v00000", "v00001", "v00002",
                                     "v00003", "v00004", "v00012"),
                       filter_indicator_functions =
                         c("distrib",
                           "^acc_univariate_outlier$"),
                       cores = NULL,
                       dimensions = # for speed, omit Accuracy
                         c("Integrity",
                           "Completeness",
                           "Consistency",
                           "Accuracy"))

  expect_equal(length(report$acc_distributions_loc.SBP_0$SummaryPlotList$SBP_0$data$SBP_0), 88)
  report_x <- prep_undisclose(report)
  expect_equal(length(report_x$acc_distributions_loc.SBP_0$SummaryPlotList$SBP_0$data), 0)

})