test_that("test export concept set expression", {

  skip_if_not_installed("jsonlite")

  # single codelist
  cs_path <- tempdir("concept_expression")
  asthma_cs <- newConceptSetExpression(list("asthma_narrow" = dplyr::tibble(
    "concept_id" = 1,
    "excluded" = FALSE,
    "descendants" = TRUE,
    "mapped" = FALSE
  ),
  "asthma_broad" = dplyr::tibble(
    "concept_id" = c(1,2),
    "excluded" = FALSE,
    "descendants" = TRUE,
    "mapped" = FALSE
  )))

  expect_no_error(exportConceptSetExpression(x = asthma_cs,
                                 path = cs_path))
  expect_true("asthma_narrow.json" %in% list.files(cs_path))
  expect_true("asthma_broad.json" %in% list.files(cs_path))

  # expect error
  expect_error(exportCodelist(x = "not codes",
                              path = cs_path))
  expect_error(exportCodelist(x = asthma_cs,
                              path = "not a path"))

})