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