message("*** devIsInteractive() ...")
library("R.devices")
types <- list(c(), "png", "x11", c("png", "jpeg", "png", "x11"), x11, png)
for (types in types) {
print(types)
res <- devIsInteractive(types)
print(res)
stopifnot(is.logical(res))
stopifnot(is.character(names(res)))
stopifnot(length(res) == length(types))
if (is.character(types)) stopifnot(all(names(res) == types))
}
message("*** devIsInteractive() ... DONE")
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