test_that("TableFooter() returns shiny.tag, correct name and value", {
  expect_true(inherits(TableFooter(), "shiny.tag"))
  expect_equal(environment(TableFooter()[["children"]][[2]])[["data"]][["name"]], "TableFooter")
  expect_equal(environment(TableFooter("Test")[["children"]][[2]])[["data"]][["props"]][["value"]][["children"]], "Test")
})