@Test
public void testReverse() throws InvalidAccessException, ValueException {
DoubleLinkedList dll = new DoubleLinkedList();
dll.pushBack(1);
dll.pushBack(2);
dll.pushBack(3);
dll.pushBack(4);
dll.reverse();
assertEquals(1, dll.popBack());
assertEquals(2, dll.popBack());
assertEquals(3, dll.popBack());
assertEquals(4, dll.popBack());
}
@Test
public void testPopBackCount() throws InvalidAccessException, ValueException {
DoubleLinkedList dll = new DoubleLinkedList();
dll.pushBack(6);
dll.pushBack(5);
assertEquals(5, dll.popBack());
assertEquals(1, dll.elements());
}
// exception expected
@Test
public void testPopBackEmpty() throws InvalidAccessException, ValueException {
DoubleLinkedList dll = new DoubleLinkedList();
try {
dll.popBack();
} catch (InvalidAccessException ex) {
return;
}
fail("ExceptionExpected");
}
// no exception expected
@Test
public void testPeekBack() throws InvalidAccessException, ValueException {
DoubleLinkedList dll = new DoubleLinkedList();
dll.pushBack(6);
dll.pushBack(5);
try {
assertEquals(5, dll.popBack());
} catch (InvalidAccessException ex) {
fail(ex.getMessage());
}
}