Description: Skip test requiring package not available in Debian

--- a/tests/testthat/test_ddsconstructor.R
+++ b/tests/testthat/test_ddsconstructor.R
@@ -1,5 +1,6 @@
 context( "Create DEXSeqDataSet" )
 test_that( "Funcion to create DEXSeqDataSet has the correct inputs", {
+  skip_if_not_installed("pasilla")
   data(pasillaDEXSeqDataSet, package="pasilla")
   mat <- featureCounts( dxd )
   pDat <- as.data.frame( colData(dxd) )
--- a/tests/testthat/test_glmgampoi.R
+++ b/tests/testthat/test_glmgampoi.R
@@ -1,6 +1,6 @@
 context("glmGamPoi")
 test_that( "Funcion to create DEXSeqDataSet has the correct inputs", {
-
+    skip_if_not_installed("pasilla")
     data("pasillaDEXSeqDataSet", package="pasilla")
 
     dxd <- estimateSizeFactors( dxd )