Nothing
test_that("plot save works", {
tempimage <- paste0(tempfile(), ".png")
dat <- flametree_grow()
pic <- flametree_plot(dat)
expect_false(file.exists(tempimage))
flametree_save(pic, tempimage)
expect_true(file.exists(tempimage))
file.remove(tempimage)
expect_false(file.exists(tempimage))
})
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