add NetStat test

bindings/java/src/net/hyperic/sigar/test/SigarTestRunner.java

@@ -33,6 +33,7 @@ public class SigarTestRunner extends SigarCommandBase {
         TestLoadAverage.class,
         TestMem.class,
         TestNetIf.class,
+        TestNetStat.class,
         TestProcArgs.class,
         TestProcEnv.class,
         TestProcExe.class,

bindings/java/src/net/hyperic/sigar/test/TestNetStat.java

@@ -0,0 +1,27 @@
+package net.hyperic.sigar.test;
+
+import net.hyperic.sigar.NetStat;
+import net.hyperic.sigar.Sigar;
+import net.hyperic.sigar.SigarNotImplementedException;
+
+public class TestNetStat extends SigarTestCase {
+    
+    public TestNetStat(String name) {
+        super(name);
+    }
+
+    public void testCreate() throws Exception {
+        Sigar sigar = getSigar();
+        NetStat netstat;
+        
+        try {
+            netstat = sigar.getNetStat();
+        } catch (SigarNotImplementedException e) {
+            return;
+        }
+        
+        assertGtEqZeroTrace("Outbound", netstat.getTcpOutboundTotal());
+        assertGtEqZeroTrace("Inbound", netstat.getTcpInboundTotal());
+        assertGtEqZeroTrace("Listen", netstat.getTcpListen());
+    }
+}