tests/testthat/test-ne_file_name.r

In rnaturalearth: World Map Data from Natural Earth

context("download of data from natural earth")

library(httr)

# a non exhaustive list of ne download urls
# initially taken from those in data_download_script.r
urls <- c(
  ne_file_name(scale = 110, type = "countries", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 110, type = "map_units", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 110, type = "sovereignty", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 50, type = "countries", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 50, type = "map_units", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 50, type = "sovereignty", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 10, type = "countries", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 10, type = "map_units", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 10, type = "sovereignty", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 50, type = "states", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 10, type = "states", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 110, type = "tiny_countries", category = "cultural", full_url = TRUE),
  ne_file_name(scale = 110, type = "coastline", category = "physical", full_url = TRUE),
  ne_file_name(scale = 50, type = "coastline", category = "physical", full_url = TRUE),
  ne_file_name(scale = 10, type = "coastline", category = "physical", full_url = TRUE)
)

url_expect_fail <- ne_file_name(scale = 110, type = "expect_fail", category = "cultural", full_url = TRUE)

test_that("urls for downloads created by the package exist", {
  testthat::skip_on_cran()

  # tests all of the urls put into the vector above
  # info=x means that test fail messages include the failed urls
  sapply(urls, function(x) expect_false(httr::http_error(x), info = x))
})

test_that("a bogus url does not exist", {
  testthat::skip_on_cran()

  expect_true(httr::http_error(url_expect_fail))
})