test_that("bracket(20242025) returns non-empty data.frame", { skip_if_offline() test <- bracket(20242025) expect_true(is.data.frame(test) && nrow(test) > 0) }) test_that("bracket(0) returns message and empty data.frame", { skip_if_offline() expect_message( test <- bracket(0), 'Invalid argument\\(s\\); refer to help file\\.' ) expect_true(is.data.frame(test) && nrow(test) == 0) })