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 package org.netbeans.html.json.impl;

 import net.java.html.json.Model;

 import net.java.html.json.Property;

 import static org.testng.Assert.assertEquals;

 import static org.testng.Assert.assertNotNull;

 import static org.testng.Assert.assertNull;

 import static org.testng.Assert.assertSame;

 import org.testng.annotations.Test;

 @Model(className = "Infinity", properties = {

     @Property(name = "next", type = Infinity.class)

 })

 public class InfinityTest {

     @Test

     public void atLeastThousandStepsDeep() {

         Infinity infinity = new Infinity();

         int cnt = 0;

         while (++cnt < 1000) {

             infinity = infinity.getNext();

         }

         assertNotNull(infinity);

         assertEquals(cnt, 1000);

     }

     @Test

     public void afterInitializationRemainsTheSame() {

         Infinity infinity = new Infinity();

         Infinity first = infinity.getNext();

         Infinity second = infinity.getNext();

         assertSame(first, second);

     }

     @Test

     public void nullRemains() {

         Infinity infinity = new Infinity();

         infinity.setNext(null);

         assertNull(infinity.getNext(), "Remains null");

         assertNull(infinity.getNext(), "Again");

     }

     @Test

     public void ownValueRemains() {

         Infinity infinity = new Infinity();

         Infinity n = new Infinity();

         infinity.setNext(n);

         assertEquals(infinity.getNext(), n, "Remains n");

         assertEquals(infinity.getNext(), n, "Again n");

     }

 }