library(testthat)
context("make_filename")
test_that("make_filename with single inputs", {
expect_equal(make_filename(2014),"accident_2014.csv.bz2")
expect_equal(make_filename("2014"),"accident_2014.csv.bz2")
})
test_that("make_filename errors with non-numeric string", {
throws_error(make_filename("two thousand"))
})
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