test_that("regex pattern", {
  expect_identical(
    SEM_VER_PATTERN,
    # https://github.com/semver/semver/blob/d58db1686379c8c6d52e32d42d3a530a964264e5/semver.md?plain=1#L357
    r"(^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$)"
  )
})