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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");

    }

}