test_that("use_revdep() requires a package", {
  create_local_project()
  expect_usethis_error(use_revdep(), "not an R package")
})

test_that("use_revdep() creates and ignores files/dirs", {
  create_local_package()
  use_revdep()
  expect_proj_file("revdep", ".gitignore")
  expect_true(is_build_ignored("^revdep$"))
})