public IntegerList sublist(Integer leftBoundary, Integer rightBoundary) {
IntegerList sublist = createEmptyInstance();
for (int i = leftBoundary; i <= rightBoundary; i++) {
sublist.append(this.get(i));
}
return sublist;
}
@Test
public void testAddToTail() {
IntegerList list = new IntegerList(5);
list.addToTail(6);
assertEquals(6, list.getTailValue());
assertEquals(5, list.getHeadValue());
}
@Test
public void testGetSize() {
IntegerList list = new IntegerList(5);
list.addToTail(6);
list.addToHead(7);
list.addToTail(8);
assertEquals(4, list.getSize());
}
@Test
public void testGetTailValue() {
IntegerList list = new IntegerList(5);
list.addToTail(6);
list.addToTail(7);
assertEquals(7, list.getTailValue());
}
@Test
public void testEqualsObjectEqual() {
IntegerList list = new IntegerList(5);
list.addToTail(6);
list.addToHead(7);
list.addToTail(8);
IntegerList list2 = new IntegerList(5);
list2.addToTail(6);
list2.addToHead(7);
list2.addToTail(8);
assertTrue(list.equals(list2));
}
@Override
public boolean equals(Object thatObject) {
if (thatObject == null) {
return false;
}
if (!thatObject.getClass().isAssignableFrom(this.getClass())) {
return false;
}
IntegerList that = (IntegerList) thatObject;
if (this.size() != that.size()) {
return false;
}
for (int i = 0; i < this.size(); i++) {
if (!this.get(i).equals(that.get(i))) {
return false;
}
}
return true;
}
@Test
public void testContains() {
IntegerList list = new IntegerList(5);
list.addToTail(6);
list.addToHead(7);
list.addToTail(8);
assertTrue(list.contains(5));
assertTrue(list.contains(6));
assertTrue(list.contains(7));
assertTrue(list.contains(8));
assertFalse(list.contains(42));
}
@Test
public void testGetHeadValue() {
IntegerList list = new IntegerList(5);
assertEquals(5, list.getHeadValue());
}