testthat::test_that("With no teal.load_nest_code option set get_rcode_str_install returns default string", {
  withr::with_options(
    list(teal.load_nest_code = NULL),
    testthat::expect_equal(get_rcode_str_install(), "# Add any code to install/load your NEST environment here\n")
  )
})


testthat::test_that("With teal.load_nest_code option set to character get_rcode_str_install returns option value", {
  withr::with_options(
    list(teal.load_nest_code = "code_here()"),
    testthat::expect_equal(get_rcode_str_install(), "code_here()")
  )


  withr::with_options(
    list(teal.load_nest_code = c("code_here()", "and_here()")),
    testthat::expect_equal(get_rcode_str_install(), c("code_here()", "and_here()"))
  )
})


testthat::test_that(
  paste(
    "When teal.load_nest_code option is not character",
    "get_rcode_str_install (silently) returns default string"
  ),
  {
    withr::with_options(
      list(teal.load_nest_code = TRUE),
      testthat::expect_equal(get_rcode_str_install(), "# Add any code to install/load your NEST environment here\n")
    )

    withr::with_options(
      list(teal.load_nest_code = list(x = "boo")),
      testthat::expect_equal(get_rcode_str_install(), "# Add any code to install/load your NEST environment here\n")
    )
  }
)


testthat::test_that("get_rcode_libraries returns current session packages", {
  testthat::expect_true(
    setequal(
      strsplit(gsub("library\\(|\\)", "", get_rcode_libraries()), "\n")[[1]],
      vapply(sessionInfo()$otherPkgs, FUN = `[[`, index = "Package", FUN.VALUE = character(1), USE.NAMES = FALSE)
    )
  )
})

testthat::test_that("get_datasets_code returns code only for specified datanames", {
  # todo: need to use code dependency? Or test it later via public functions/modules
  datasets <- teal.slice::init_filtered_data(
    list(
      IRIS = list(dataset = iris),
      MTCARS = list(dataset = mtcars)
    )
  )
  testthat::expect_true(TRUE)
})