Description: skip tests if package is not available in Debian
Bug: https://bugs.debian.org/961592

--- a/tests/testthat/setup.R
+++ b/tests/testthat/setup.R
@@ -1,4 +1,9 @@
 ## libs ---------------------------------------------------------------------
+if(!require(BSgenome.Hsapiens.UCSC.hg19)){
+ print("BSgenome.Hsapiens.UCSC.hg19 is not available!")
+ quit(save = "no", status = 0)
+}
+
 library(BSgenome.Hsapiens.UCSC.hg19)
 
 ## general ------------------------------------------------------------------