is(hullPlot(pointsDF, "Hull plot", 15.4, 1.5)) (`actual`) not equal to "gg" (`expected`).

`actual`:   "ggplot2::ggplot"
`expected`: "gg"

is(hullPlot(pointsDF, "Hull plot", 7, 1.5, labelDF = labelDF)) (`actual`) not equal to "gg" (`expected`).

`actual`:   "ggplot2::ggplot"
`expected`: "gg"