Nothing
needs_cairo <- function(fn) fn %in% c("with_cairo_pdf", "with_cairo_ps", "with_svg", "local_cairo_pdf", "local_cairo_ps", "local_svg")
skip_if_needs_cairo <- function(fn) {
if (!capabilities("cairo") && needs_cairo(fn)) {
skip("cairo not available")
}
}
test_that("with_*device* functions create a plot file", {
fn_names <- c("with_bmp", "with_jpeg", "with_pdf", "with_png",
"with_tiff", "with_svg", "with_cairo_pdf", "with_cairo_ps")
fns <- mget(fn_names, envir = asNamespace("withr"))
for (i in seq_along(fns)) {
skip_if_needs_cairo(fn_names[[i]])
filename <- withr::local_tempfile()
expect_no_error(fns[[i]](filename, plot(1)))
expect_true(file.exists(filename), info = fn_names[[i]])
expect_gt(file.info(filename)$size, 0, label = fn_names[[i]])
}
})
test_that("local_device functions create a plot file", {
fn_names <- c("local_bmp", "local_jpeg", "local_pdf", "local_png",
"local_tiff", "local_svg", "local_cairo_pdf", "local_cairo_ps")
fns <- mget(fn_names, envir = asNamespace("withr"))
for (i in seq_along(fns)) {
skip_if_needs_cairo(fn_names[[i]])
filename <- withr::local_tempfile()
local({
expect_no_error(fns[[i]](filename))
plot(1)
})
expect_true(file.exists(filename), info = fn_names[[i]])
expect_gt(file.info(filename)$size, 0, label = fn_names[[i]])
}
})
test_that("multiple devices closed in correct order", {
dev1 <- local_pdf(tempfile())
local({
dev2 <- local_pdf(tempfile())
local(withr::local_pdf(tempfile()))
expect_equal(dev.cur(), dev2)
})
expect_equal(dev.cur(), dev1)
})
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