Nothing
context("Graphics")
test_that("the swatch function works", {
expect_null(swatch(c("red", "green", "blue")))
grDevices::dev.off()
expect_null(swatch(saturation(brightness(c("red", "green", "blue"), c(0.25,0.75)), c(0.25,0.75))))
grDevices::dev.off()
})
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