# download_asset ---------------------------------------------------------
test_that("download_asset rejects bad input parameters", {
  expect_error(download_asset(asset_id = -1))
  expect_error(download_asset(asset_id = 0))
  expect_error(download_asset(asset_id = "a"))
  expect_error(download_asset(asset_id = list(a=1, b=2)))
  expect_error(download_asset(asset_id = TRUE))
  
  expect_error(download_asset(session_id = -1))
  expect_error(download_asset(session_id = 0))
  expect_error(download_asset(session_id = "a"))
  expect_error(download_asset(session_id = list(a=1, b=2)))
  expect_error(download_asset(session_id = TRUE))

  expect_error(download_asset(file_name = 3))
  expect_error(download_asset(file_name = list(a=1, b=2)))
  expect_error(download_asset(file_name = TRUE))
  
  expect_error(download_asset(target_dir = 3))
  expect_error(download_asset(target_dir = list(a=1, b=2)))
  expect_error(download_asset(target_dir = TRUE))
  
  expect_error(download_asset(return_response = -1))
  expect_error(download_asset(return_response = 3))
  expect_error(download_asset(return_response = "a"))
  expect_error(download_asset(return_response = list(a=1, b=2)))
  
  expect_error(download_asset(vb = -1))
  expect_error(download_asset(vb = 3))
  expect_error(download_asset(vb = "a"))
  expect_error(download_asset(vb = list(a=1, b=2)))
})

test_that("download_asset returns character string", {
  expect_true(is.character(download_asset()))
})