tests/testthat/test_frequency_plotting.R

In neuroconductor/eegUtils: Utilities for Electroencephalographic (EEG) Analysis

context("Frequency analysis plotting")

test_that("plot_psd produces a ggplot", {
  skip_on_appveyor()
  psd_test <- plot_psd(demo_epochs)
  vdiffr::expect_doppelganger("power spectrum for demo epochs", psd_test)
  tfr_test <- compute_tfr(demo_epochs,
                          foi = c(4, 30),
                          n_freq = 16,
                          n_cycles = 3,
                          output = "fourier")
  tfr_plot <- plot_tfr(tfr_test)
  vdiffr::expect_doppelganger("TFA plot for demo epochs fourier", tfr_plot)
  tfr_test <- compute_tfr(demo_epochs,
                          foi = c(4, 30),
                          n_freq = 16,
                          n_cycles = 3)
  tfr_plot <- plot_tfr(tfr_test)
  vdiffr::expect_doppelganger("TFA plot for demo epochs", tfr_plot)
  baseline_types <- c("db", "ratio", "pc", "absolute")
  tfr_plots <- purrr::map(baseline_types,
                          ~plot_tfr(tfr_test,
                                    baseline_type = .,
                                    baseline = c(-.1, 0)))
  purrr::walk(1:length(baseline_types),
             ~vdiffr::expect_doppelganger(baseline_types[.],
                                          tfr_plots[.]))
  #vdiffr::expect_doppelganger("TFA plot for demo epochs", tfr_plot)
  tfr_test <- compute_tfr(demo_epochs,
                          foi = c(4, 30),
                          n_freq = 16,
                          n_cycles = 3,
                          keep_trials = TRUE)
  tfr_plot <- plot_tfr(tfr_test)
  vdiffr::expect_doppelganger("TFA plot unaveraged", tfr_plot)
  tfr_test <- compute_tfr(demo_epochs,
                          foi = c(4, 30),
                          n_freq = 16,
                          n_cycles = 3, spacing = "log")
  tfr_plot <- plot_tfr(tfr_test)
  vdiffr::expect_doppelganger("TFA plot for log spaced", tfr_plot)

})