Test testUnderflow

Test	Status	Start time	Time (seconds)	Message
testUnderflow	1PASS	31 Oct 15:15:41	0.0

Target Class	Coverage contributed by testUnderflow
jalview.util.SparseCount   jalview.util.SparseCount	0.5656%
jalview.ext.android.ContainerHelpers   jalview.ext.android.ContainerHelpers	0.518518551.9%
jalview.ext.android.SparseShortArray   jalview.ext.android.SparseShortArray	0.288135628.8%
jalview.ext.android.SparseIntArray   jalview.ext.android.SparseIntArray	0.2415730424.2%