diff --git a/genomix/genomix-hadoop/data/webmap/SplitOnce.txt b/genomix/genomix-hadoop/data/webmap/SplitOnce.txt
new file mode 100644
index 0000000..d8e2b7e
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/SplitOnce.txt
@@ -0,0 +1,2 @@
+1	AATAG
+2	GCATA
diff --git a/genomix/genomix-hadoop/data/webmap/SplitRepeat.txt b/genomix/genomix-hadoop/data/webmap/SplitTwice.txt
similarity index 100%
rename from genomix/genomix-hadoop/data/webmap/SplitRepeat.txt
rename to genomix/genomix-hadoop/data/webmap/SplitTwice.txt
diff --git a/genomix/genomix-hadoop/data/webmap/lastesttest/HighSplitRepeat/HighSplitRepeat.txt b/genomix/genomix-hadoop/data/webmap/lastesttest/HighSplitRepeat/HighSplitRepeat.txt
new file mode 100644
index 0000000..eca0a13
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/lastesttest/HighSplitRepeat/HighSplitRepeat.txt
@@ -0,0 +1,3 @@
+1	AGCCACA
+2	GCACTTT
+3	CGCCGTC
diff --git a/genomix/genomix-hadoop/data/webmap/lastesttest/LowSplitRepeat/LowSplitRepeat.txt b/genomix/genomix-hadoop/data/webmap/lastesttest/LowSplitRepeat/LowSplitRepeat.txt
new file mode 100644
index 0000000..259fd80
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/lastesttest/LowSplitRepeat/LowSplitRepeat.txt
@@ -0,0 +1,3 @@
+1	AGCCA
+2	AGCCG
+3	GCCTT
diff --git a/genomix/genomix-hadoop/data/webmap/lastesttest/MidSplitRepeat/MidSplitRepeat.txt b/genomix/genomix-hadoop/data/webmap/lastesttest/MidSplitRepeat/MidSplitRepeat.txt
new file mode 100644
index 0000000..e934e54
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/lastesttest/MidSplitRepeat/MidSplitRepeat.txt
@@ -0,0 +1,3 @@
+1	AGCCA
+2	CGCCT
+3	GCCGG
diff --git a/genomix/genomix-hadoop/data/webmap/lastesttest/Tips1/Tips1.txt b/genomix/genomix-hadoop/data/webmap/lastesttest/Tips1/Tips1.txt
new file mode 100644
index 0000000..1e16d68
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/lastesttest/Tips1/Tips1.txt
@@ -0,0 +1,2 @@
+1	CAGCCA
+2	GCCGTA
diff --git a/genomix/genomix-hadoop/data/webmap/lastesttest/Tips2/Tips2.txt b/genomix/genomix-hadoop/data/webmap/lastesttest/Tips2/Tips2.txt
new file mode 100644
index 0000000..8109730
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/lastesttest/Tips2/Tips2.txt
@@ -0,0 +1,2 @@
+1	ACAGCG
+2	GGCGAA
diff --git a/genomix/genomix-hadoop/data/webmap/lastesttest/Tips3/Tips3.txt b/genomix/genomix-hadoop/data/webmap/lastesttest/Tips3/Tips3.txt
new file mode 100644
index 0000000..a672034
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/lastesttest/Tips3/Tips3.txt
@@ -0,0 +1,2 @@
+1	CAGCCT
+2	CAGCCA
diff --git a/genomix/genomix-hadoop/data/webmap/lastesttest/Tips4/Tips4.txt b/genomix/genomix-hadoop/data/webmap/lastesttest/Tips4/Tips4.txt
new file mode 100644
index 0000000..499e8e6
--- /dev/null
+++ b/genomix/genomix-hadoop/data/webmap/lastesttest/Tips4/Tips4.txt
@@ -0,0 +1,2 @@
+1	CAGGCA
+2	CAGGCC
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GenomixMapper.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GenomixMapper.java
index 6951e8b..39a7535 100644
--- a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GenomixMapper.java
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GenomixMapper.java
@@ -93,6 +93,8 @@
             setNodeId(mateId, readID, 1);
             //set value.edgeList
             setEdgeListForNextKmer();
+            //set coverage = 1
+            outputNode.setAvgCoverage(1);
             //output mapper result
             setMapperOutput(output);
             
@@ -107,6 +109,8 @@
                 //set value.edgeList
                 setEdgeListForPreKmer();
                 setEdgeListForNextKmer();
+                //set coverage = 1
+                outputNode.setAvgCoverage(1);
                 //output mapper result
                 setMapperOutput(output);
             }
@@ -119,6 +123,8 @@
         	setNodeId(mateId, readID, array.length - KMER_SIZE + 1);
             //set value.edgeList
             setEdgeListForPreKmer();
+            //set coverage = 1
+            outputNode.setAvgCoverage(1);
             //output mapper result
             setMapperOutput(output);
         }
diff --git a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GenomixReducer.java b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GenomixReducer.java
index 4b79ea4..e8e41c4 100644
--- a/genomix/genomix-hadoop/src/main/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GenomixReducer.java
+++ b/genomix/genomix-hadoop/src/main/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GenomixReducer.java
@@ -19,6 +19,7 @@
     public static int KMER_SIZE;
     private NodeWritable outputNode;
     private NodeWritable tmpNode;
+    private float averageCoverage;
     
     @Override
     public void configure(JobConf job) {
@@ -32,6 +33,7 @@
 			OutputCollector<VKmerBytesWritable, NodeWritable> output,
 			Reporter reporter) throws IOException {
 		outputNode.reset();
+		averageCoverage = 0;
 		
 		while (values.hasNext()) {
 		    tmpNode.set(values.next());
@@ -40,7 +42,9 @@
 		    outputNode.getFRList().unionUpdate(tmpNode.getFRList());
 		    outputNode.getRFList().unionUpdate(tmpNode.getRFList());
 		    outputNode.getRRList().unionUpdate(tmpNode.getRRList());
+		    averageCoverage += tmpNode.getAvgCoverage();
 		}
+		outputNode.setAvgCoverage(averageCoverage);
 		output.collect(key,outputNode);
 	}
 
diff --git a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GraphBuildingTestCase.java b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GraphBuildingTestCase.java
index 1916fc2..44f3168 100644
--- a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GraphBuildingTestCase.java
+++ b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GraphBuildingTestCase.java
@@ -11,6 +11,7 @@
 import org.apache.hadoop.mapred.JobConf;
 import org.junit.Test;
 
+import edu.uci.ics.genomix.hadoop.graph.GenerateGraphViz;
 import edu.uci.ics.genomix.hadoop.pmcommon.HadoopMiniClusterTest;
 
 
@@ -59,10 +60,11 @@
     
     
     
-    private void dumpResult() throws IOException {
+    private void dumpResult() throws Exception {
 //        Path src = new Path(RESULT_PATH);
 //        Path dest = new Path(RESULT_PATH);
 //        dfs.copyToLocalFile(src, dest);
         HadoopMiniClusterTest.copyResultsToLocal(RESULT_PATH, RESULT_PATH + "/test.txt", false, conf, true, dfs);
+        GenerateGraphViz.convertGraphBuildingOutputToGraphViz(RESULT_PATH + "/test.txt.bindir", RESULT_PATH + "/graphviz");
     }
 }
diff --git a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GraphBuildingTestSuite.java b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GraphBuildingTestSuite.java
index dd9c05f..30e75cf 100644
--- a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GraphBuildingTestSuite.java
+++ b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/contrailgraphbuilding/GraphBuildingTestSuite.java
@@ -22,16 +22,23 @@
 public class GraphBuildingTestSuite extends TestSuite{
 
     private static int SIZE_KMER = 3;
-    public static final String PreFix = "data/webmap/pathmerge_TestSet"; 
+    public static final String PreFix = "data/webmap/lastesttest"; 
     public static final String[] TestDir = { PreFix + File.separator
-        + "2", PreFix + File.separator
-        + "3", PreFix + File.separator
-        + "4", PreFix + File.separator
-        + "5", PreFix + File.separator
-        + "6", PreFix + File.separator
-        + "7", PreFix + File.separator
-        + "8", PreFix + File.separator
-        + "9"};
+//        + "2", PreFix + File.separator
+//        + "3", PreFix + File.separator
+//        + "4", PreFix + File.separator
+//        + "5", PreFix + File.separator
+//        + "6", PreFix + File.separator
+//        + "7", PreFix + File.separator
+//        + "8", PreFix + File.separator
+//        + "9"};
+        + "HighSplitRepeat", PreFix + File.separator
+        + "LowSplitRepeat", PreFix + File.separator
+        + "MidSplitRepeat", PreFix + File.separator
+        + "Tips1", PreFix + File.separator
+        + "Tips2", PreFix + File.separator
+        + "Tips3", PreFix + File.separator
+        + "Tips4"};
     
     private static JobConf conf = new JobConf();
     private static final String ACTUAL_RESULT_DIR = "actual";
diff --git a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/pmcommon/HadoopMiniClusterTest.java b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/pmcommon/HadoopMiniClusterTest.java
index 0c92afe..3788a27 100644
--- a/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/pmcommon/HadoopMiniClusterTest.java
+++ b/genomix/genomix-hadoop/src/test/java/edu/uci/ics/genomix/hadoop/pmcommon/HadoopMiniClusterTest.java
@@ -7,7 +7,6 @@
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.Arrays;
 
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.lang3.ArrayUtils;
@@ -19,14 +18,10 @@
 import org.apache.hadoop.hdfs.MiniDFSCluster;
 import org.apache.hadoop.io.SequenceFile;
 import org.apache.hadoop.io.Writable;
-import org.apache.hadoop.mapred.FileInputFormat;
-import org.apache.hadoop.mapred.FileOutputFormat;
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapred.MiniMRCluster;
 import org.apache.hadoop.util.ReflectionUtils;
-import org.junit.After;
 import org.junit.AfterClass;
-import org.junit.Before;
 import org.junit.BeforeClass;
 
 //import edu.uci.ics.genomix.hadoop.velvetgraphbuilding.GraphBuildingDriver;