context("theme-brain")
test_that("Check that themes are working", {

  p <- ggseg(atlas = dk, show.legend = FALSE,
             mapping = aes(fill = region))

  expect_doppelganger("theme brain",
                      p + theme_brain())

  expect_doppelganger("theme darkbrain",
                      p + theme_darkbrain())

  expect_doppelganger("theme custombrain",
                      p + theme_custombrain(text.colour = "blue"))

  expect_doppelganger("theme brain2",
                      p + theme_brain2())

})