old_max <- getOption("max.print") max <- 1000 options(max.print = max) x <- data.frame( state = sample(state.name, size = max + 1, replace = TRUE), x = rnorm(n = max + 1), y = sample(-9:9, size = max + 1, replace = TRUE), z = rep(rivers, length.out = max + 1) ) y <- x[seq((max/2)), ] a <- tibble::as_tibble(x) b <- tibble::as_tibble(y) test_that("printing all of long data frame", { # should print expect_output(print_all(x, ask = FALSE), NULL) # prints all rows plus header l <- capture_output_lines(print_all(x, ask = FALSE)) expect_length(l, nrow(x) + 1) }) test_that("printing all of long tibble", { # should print expect_output(print_all(a, ask = FALSE), NULL) # prints all rows plus header and footer l <- capture_output_lines(print_all(a, ask = FALSE)) expect_length(l, nrow(a) + 3) }) test_that("printing all short data frame", { # should print expect_output(print_all(y, ask = FALSE), NULL) # prints all rows plus header and max l <- capture_output_lines(print_all(y, ask = FALSE)) expect_length(l, nrow(y) + 1) }) test_that("printing all short tibble", { # should print expect_output(print_all(b, ask = FALSE), NULL) # prints all rows plus header and footer l <- capture_output_lines(print_all(b, ask = FALSE)) expect_length(l, nrow(b) + 3) }) options(max.print = old_max)