test_that("git_extract_sha1_tar", {

  skip_on_cran()
  skip_if_offline()
  skip_if_over_rate_limit()

  sha <- "fbae60ced0afee0e7c0f8dc3b5b1bb48d303f3dd"
  url <- build_url(
    "api.github.com/repos/hadley/devtools/tarball",
    sha
  )

  tmp <- tempfile()
  on.exit(unlink(tmp), add = TRUE)
  download(tmp, url, auth_token = github_pat())

  expect_equal(
    git_extract_sha1_tar(tmp),
    sha
  )
})


test_that("git not quiet", {

  mockery::stub(git, "check_git_path", "/foo/git")
  mockery::stub(git, "system", "0")
  expect_message(
    git(args = c("arg1", "arg2"), quiet = FALSE),
    "['\"]/foo/git['\"] arg1arg2"
  )
})


test_that("git error", {

  mockery::stub(git, "check_git_path", "/foo/git")
  mockery::stub(git, "system", structure("foo", status = "1"))
  expect_error(git(args = "arg"), "Command failed")
})


test_that("git_path", {

  tmp <- tempfile()
  expect_error(
    git_path(tmp),
    "does not exist"
  )

  cat("Hello", file = tmp)
  expect_equal(git_path(tmp), tmp)

  mockery::stub(git_path, "Sys.which", "")
  mockery::stub(git_path, "os_type", "windows")
  mockery::stub(git_path, "file.exists", FALSE)
  expect_null(git_path())
})


test_that("check_git_path", {

  mockery::stub(check_git_path, "git_path", NULL)
  expect_error(
    check_git_path(),
    "Git does not seem to be installed on your system"
  )
})