test_that("Require file", {
  expect_error(mx_export())
})

mx_result <- mx_search(mx_snapshot(),
  query = c("dementia"),
  to_date = "2020-01-01",
)

tmpfile <- tempfile(fileext = ".bib")

test_that("Inital output", {
  skip_if_offline()
  expect_message(mx_export(mx_result,tmpfile),
                 regexp = "References exported to")
})

testthat::test_that("Inital output", {
  skip_if_offline()
  expect_identical(file.exists(tmpfile), TRUE)
})