tests/testthat/helper-utils.R

In qtl2: Quantitative Trait Locus Mapping in Experimental Crosses

# use vdiffr only if installed
expect_doppelganger <- function(title, fig, ...) {
  testthat::skip_if_not_installed("vdiffr")
  vdiffr::expect_doppelganger(title, fig, ...)
}