New arguments to expect_snapshot_print():
fn_current: A function to process the current snapshot
string before comparison.fn_target: A function to process the target snapshot
string before comparison.review: TRUE (default) to write the diff plot to file.
FALSE to return a failure but no file.style argument to
expect_snapshot_plot() and
expect_equivalent_images() to control the style of the diff
image to print. Plot with “old”, “new”, and “diff” facets.ignore_white_space argument in
expect_snapshot_print().mode argument in
expect_snapshot_print()diffobj messagesdiffObj::diffPrint(guides = FALSE) because
guides generated errors in some long text comparisons.os argument to skip tests on unspecified operating
systems.device_args argument to pass additional arguments
to the device function.