test_that("tracer_provider_file", {
  tmp <- tempfile(fileext = "jsonl")
  on.exit(unlink(tmp), add = TRUE)
  withr::local_envvar(
    structure(tmp, names = file_exporter_traces_file_envvar)
  )

  tp <- tracer_provider_file_new()
  trc <- tp$get_tracer()
  sp1 <- trc$start_local_active_span("s1")
  sp1$end()
  tp$flush()

  expect_true(file.exists(tmp))
  spn <- jsonlite::fromJSON(tmp, simplifyVector = FALSE)
  expect_equal(spn$resourceSpans[[1]]$scopeSpans[[1]]$spans[[1]]$name, "s1")
})

test_that("tracer_provider_file$options", {
  expect_snapshot({
    tracer_provider_file$options()
  })
})