/** @see FunctionalList#rest() */
@Override
public FunctionalList rest() {
if (size() == 0) {
return new FunctionalArrayList();
} else {
FunctionalList tempList = new FunctionalArrayList();
for (int i = 1; i < size(); i++) {
tempList.add(get(i).getReturnValue());
}
return tempList;
}
}
/**
* Returns a list with the elements in this list except the head. The elements must be in the same
* order. The original list must not change or be affected by changes in the new list.
*
* <p>If the list is empty, another empty list is returned.
*/
public FunctionalList rest() {
ErrorMessage error1 = errortype(0);
FunctionalList list1 = new FunctionalLinkedList();
if (error1.equals(ErrorMessage.NO_ERROR)) {
// list1.setList(this.getList());
list1.remove(0);
return list1;
} else {
return list1;
}
}
@Test
public void testsGetRestArray() {
FunctionalList testList = new FunctionalArrayList();
assertEquals("get Rest on empty", 0, testList.rest().size());
testList.add("zero");
assertEquals("get Rest on list of one", 0, testList.rest().size());
testList.add("one");
testList.add("two");
testList.add("three");
assertEquals("get Rest on list of 4", 3, testList.rest().size());
assertEquals("test specific elements", "one", testList.rest().get(0).getReturnValue());
assertEquals("test specific elements", "two", testList.rest().get(1).getReturnValue());
assertEquals("test specific elements", "three", testList.rest().get(2).getReturnValue());
}
@Test
public void testsGetHeadLinked() {
FunctionalList testList = new FunctionalLinkedList();
assertEquals("get Head on empty", ErrorMessage.EMPTY_STRUCTURE, testList.head().getError());
testList.add("zero");
testList.add("one");
testList.add("two");
assertEquals(
"get Head when not empty, no error", ErrorMessage.NO_ERROR, testList.head().getError());
assertEquals("get Head when not empty, correct item", "zero", testList.head().getReturnValue());
}
