diff -r 000000000000 -r 5f04bdbc6ee1 ko-archetype/src/main/resources/archetype-resources/src/test/java/TwitterClientTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ko-archetype/src/main/resources/archetype-resources/src/test/java/TwitterClientTest.java	Mon May 13 14:25:37 2013 +0200
@@ -0,0 +1,49 @@
+package ${package};
+
+import java.util.List;
+import net.java.html.json.Context;
+import static org.testng.Assert.*;
+import org.testng.annotations.BeforeMethod;
+import org.testng.annotations.Test;
+
+/** We can unit test the TwitterModel smoothly.
+ */
+public class TwitterClientTest {
+    private TwitterModel model;
+    
+
+    @BeforeMethod
+    public void initModel() {
+        model = new TwitterModel(Context.EMPTY);
+    }
+
+    @Test public void testIsValidToAdd() {
+        model.setUserNameToAdd("Joe");
+        Tweeters t = new Tweeters(Context.EMPTY);
+        t.setName("test");
+        model.getSavedLists().add(t);
+        model.setActiveTweetersName("test");
+        
+        assertTrue(model.isUserNameToAddIsValid(), "Joe is OK");
+        TwitterClient.addUser(model);
+        assertFalse(model.isUserNameToAddIsValid(), "Can't add Joe for the 2nd time");
+        assertEquals(t.getUserNames().size(), 0, "Original tweeters list remains empty");
+        
+        List<String> mod = model.getActiveTweeters();
+        assertTrue(model.isHasUnsavedChanges(), "We have modifications");
+        assertEquals(mod.size(), 1, "One element in the list");
+        assertEquals(mod.get(0), "Joe", "Its name is Joe");
+        
+        assertSame(model.getActiveTweeters(), mod, "Editing list is the modified one");
+        
+        TwitterClient.saveChanges(model);
+        assertFalse(model.isHasUnsavedChanges(), "Does not have anything to save");
+        
+        assertSame(model.getActiveTweeters(), mod, "Still editing the old modified one");
+    }
+    
+    @Test public void httpAtTheEnd() {
+        String res = TwitterClient.Twt.html("Ahoj http://kuk");
+        assertEquals(res, "Ahoj <a href='http://kuk'>http://kuk</a>");
+    }
+}