test_that("insertFromSource", {
  person <- dplyr::tibble(
    person_id = 1L, gender_concept_id = 0L, year_of_birth = 1990L,
    race_concept_id = 0L, ethnicity_concept_id = 0L
  )
  observation_period <- dplyr::tibble(
    observation_period_id = 1L, person_id = 1L,
    observation_period_start_date = as.Date("2000-01-01"),
    observation_period_end_date = as.Date("2023-12-31"),
    period_type_concept_id = 0L
  )
  cdm <- cdmFromTables(
    tables = list("person" = person, "observation_period" = observation_period),
    cdmName = "test"
  )
  cdm$test <- dplyr::tibble(a = 1) |> expect_no_error()
  expect_true(inherits(cdm$test, "cdm_table"))
  expect_error(cdm$xxx <- "a")
})