test_that("draw_spectrogram_general", {
  skip_on_cran()
  tdir <- tempdir()
  dir.create(paste0(tdir, "/draw_spectrogram"))
  grDevices::png(filename = paste0(tdir, "/draw_spectrogram/test1.png"))
  draw_spectrogram(system.file("extdata", "test.wav", package = "phonfieldwork"))
  supress_message <- grDevices::dev.off()

  raven_an <- data.frame(
    time_start = 450,
    time_end = 520,
    freq_low = 3,
    freq_high = 4.5
  )
  grDevices::png(filename = paste0(tdir, "/draw_spectrogram/test2.png"))
  draw_sound(system.file("extdata", "test.wav", package = "phonfieldwork"),
    raven_annotation = raven_an
  )
  supress_message <- grDevices::dev.off()

  test_that("draw_spectrogram", {
    skip_on_cran()
    expect_equal(
      list.files(paste0(tdir, "/draw_spectrogram"), "\\.png$"),
      c("test1.png", "test2.png")
    )
  })
  unlink(paste0(tdir, "/draw_spectrogram"))
  rm(tdir)
})