add test cases for path merge and other data clean patterns
diff --git a/genomix/genomix-pregelix/data/TipAddGraph/txt/test b/genomix/genomix-pregelix/data/TipAddGraph/txt/test
new file mode 100755
index 0000000..5c36d0a
--- /dev/null
+++ b/genomix/genomix-pregelix/data/TipAddGraph/txt/test
@@ -0,0 +1,7 @@
+(1,5) ([(1,6)] [] [] [(1,4)] GAA)
+(2,1) ([] [] [] [(1,4)] )
+(1,1) ([(1,2)] [] [] [] AAT)
+(1,2) ([(1,3)] [] [] [(1,1)] ATA)
+(1,4) ([(1,5),(2,1)] [] [] [(1,3)] AGA)
+(1,3) ([(1,4)] [] [] [(1,2)] TAG)
+(1,6) ([] [] [] [(1,5)] AAC)