testthat::test_that("covfefefy produces proper results",{
testthat::expect_equal(covfefy("coverage"),"covfefe")
testthat::expect_equal(covfefy("example"),"exxaxa")
testthat::expect_equal(covfefy("programming"),"progkaka")
testthat::expect_equal(covfefy("president"),"preszizi")
})
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