import static org.junit.Assert.*;

import org.junit.Test;

/** Perform tests of the DoubleChain class

*/

public class TestDoubleChain {

/** Tests the constructor of DoubleChain */

@Test

public void testConstructor() {

DoubleChain d = new DoubleChain(5);

assertEquals(5,d.getFront().val, 1e-6);

assertEquals(null, d.getFront().prev);

assertEquals(null, d.getFront().next);

}

/** Tests some basic DoubleChain operations. */

@Test

public void testBasicOperations() {

DoubleChain d = new DoubleChain(5);

assertEquals(5, d.getFront().val, 1e-11);

assertEquals(5, d.getBack().val, 1e-11);

d.insertFront(2);

d.insertFront(1);

d.insertBack(7);

d.insertBack(8);

assertEquals(1, d.getFront().val, 1e-11);

assertEquals(8, d.getBack().val, 1e-11);

}

public static void main(String[] args) {

jh61b.junit.textui.runClasses(TestDoubleChain.class);

}

}