testthat::test_that("mheart1s20", {
data("mheart1s20")
testthat::expect_equal(object = nrow(mheart1s20), expected = 594)
testthat::expect_equal(object = ncol(mheart1s20), expected = 9)
testthat::expect_s3_class(object = mheart1s20, class = "data.frame")
})
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