# Set up the path and data -------------------------------------------------
metadata <- read.csv(
  get_data_location("ExampleProject_DataDictionary_2018-06-07.csv"),
  stringsAsFactors = TRUE
)

records <-
  read.csv(get_data_location("ExampleProject_DATA_2018-06-07_1129.csv"),
           stringsAsFactors = TRUE)

redcap_output_csv1 <- REDCap_split(records, metadata)

# Test that basic CSV export matches reference ------------------------------
test_that("CSV export matches reference", {
  expect_known_hash(redcap_output_csv1, "f74558d1939c17d9ff0e08a19b956e26")
})

# Test that REDCap_split can handle a focused dataset

records_red <- records[!records$redcap_repeat_instrument == "sale",
                       !names(records) %in%
                         metadata$field_name[metadata$form_name == "sale"] &
                         !names(records) == "sale_complete"]
records_red$redcap_repeat_instrument <-
  as.character(records_red$redcap_repeat_instrument)

redcap_output_red <- REDCap_split(records_red, metadata)


test_that("REDCap_split handles subset dataset",
          {
            testthat::expect_length(redcap_output_red, 1)
          })


# Test that R code enhanced CSV export matches reference --------------------
if (requireNamespace("Hmisc", quietly = TRUE)) {
  test_that("R code enhanced export matches reference", {
    redcap_output_csv2 <-
      REDCap_split(REDCap_process_csv(records), metadata)

    expect_known_hash(redcap_output_csv2, "6d8d0462ab2343b848a086ab06b50fe3")
  })
}


if (requireNamespace("readr", quietly = TRUE)) {

  metadata <-
    readr::read_csv(get_data_location(
      "ExampleProject_DataDictionary_2018-06-07.csv"))

  records <-
    readr::read_csv(get_data_location(
      "ExampleProject_DATA_2018-06-07_1129.csv"))

  redcap_output_readr <- REDCap_split(records, metadata)

  expect_matching_elements <- function(FUN) {
    FUN <- match.fun(FUN)
    expect_identical(lapply(redcap_output_readr, FUN),
                     lapply(redcap_output_csv1, FUN))
  }

  test_that("Result of data read in with `readr` will
            match result with `read.csv`",
            {
              # The list itself
              expect_identical(length(redcap_output_readr),
                               length(redcap_output_csv1))
              expect_identical(names(redcap_output_readr),
                               names(redcap_output_csv1))

              # Each element of the list
              expect_matching_elements(names)
              expect_matching_elements(dim)
            })

}