Added some simple unit tests

Author: stealthcopter

.idea/vcs.xml

@@ -2,6 +2,7 @@
 
 import android.support.annotation.Nullable;
 import android.support.v4.util.Pair;
+import android.text.TextUtils;
 
 import java.io.BufferedReader;
 import java.io.FileReader;
@@ -29,8 +30,9 @@ public class ARPInfo {
      */
     @Nullable
     public static String getMACFromIPAddress(String ip) {
-        if (ip == null)
+        if (ip == null) {
             return null;
+        }
 
         for (String line : getLinesInARPCache()) {
             String[] splitted = line.split(" +");

library/src/main/java/com/stealthcopter/networktools/ARPInfo.java

@@ -0,0 +1,31 @@
+package com.stealthcopter.networktools;
+
+import org.junit.Test;
+
+import java.util.ArrayList;
+
+import static junit.framework.Assert.assertNull;
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.mock;
+
+/**
+ * To work on unit tests, switch the Test Artifact in the Build Variants view.
+ */
+public class ARPInfoUnitTest {
+
+    @Test
+    public void nullIPsandMacsReturnNull() throws Exception {
+
+        assertNull(ARPInfo.getMACFromIPAddress(null));
+        assertNull(ARPInfo.getIPAddressFromMAC(null));
+
+//        assertEquals(arpInfo.getMACFromIPAddress("192.168.18.11"), "00:04:20:06:55:1a");
+//        assertEquals(arpInfo.getIPAddressFromMAC("00:22:43:ab:2a:5b"), "192.168.18.36");
+
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testIllegalArgumentThrownOnInvalidMACaddress(){
+        ARPInfo.getIPAddressFromMAC("00:00:00:xx");
+    }
+}

library/src/test/java/com/stealthcopter/networktools/ARPInfoUnitTest.java

@@ -0,0 +1,58 @@
+package com.stealthcopter.networktools;
+
+import org.junit.Test;
+
+import java.io.IOException;
+
+import static junit.framework.Assert.assertNull;
+
+/**
+ * To work on unit tests, switch the Test Artifact in the Build Variants view.
+ */
+public class WakeOnLanUnitTest {
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testIllegalArgumentThrownOnInvalidIPaddress(){
+        try {
+            WakeOnLan.sendWakeOnLan(null, "00:04:20:06:55:1a", 9, 10000, 5);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testIllegalArgumentThrownOnInvalidMACaddress(){
+        try {
+            WakeOnLan.sendWakeOnLan("192.168.0.1", null, 9, 10000, 5);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testIllegalArgumentThrownOnInvalidPortLow(){
+        try {
+            WakeOnLan.sendWakeOnLan("192.168.0.1", "00:04:20:06:55:1a", -1, 10000, 5);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testIllegalArgumentThrownOnInvalidPortHigh(){
+        try {
+            WakeOnLan.sendWakeOnLan("192.168.0.1", "00:04:20:06:55:1a", 65536, 10000, 5);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testIllegalArgumentThrownOnInvalidPackets(){
+        try {
+            WakeOnLan.sendWakeOnLan("192.168.0.1", "00:04:20:06:55:1a", 9, 10000, 0);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}