test_that("the version of renv in a project can be changed (upgraded)", {

  skip_slow()

  renv_tests_scope()
  init()

  # with a version number
  upgrade(version = "0.5.0")
  version <- renv_activate_version(".")
  expect_equal(c(version), "0.5.0")

  sha <- attr(version, "sha", exact = TRUE)
  expect_equal(sha, "32f0f78d87150a8656a99223396f844e2fac7a17")

  # or with a sha
  expect_true(upgrade(version = "5049cef8a"))

  version <- renv_activate_version(".")
  expect_equal(c(version), "0.17.3-62")

  sha <- attr(version, "sha", exact = TRUE)
  expect_equal(sha, "5049cef8a94591b802f9766a0da092780f59f7e4")

  # second upgrade does nothing
  expect_false(upgrade(version = "5049cef8a"))

})