context("draw_chromatogram") library(testthat) data("aligned_peak_data") x <- draw_chromatogram(data = aligned_peak_data, rt_col_name = "time", samples = "M2", show_num = FALSE, plot = F, width = 0.01) test_that("output is correct", { expect_equal(length(x), 2) # list of two elements expect_equal(dim(x[["df"]]), c(8594, 5)) })