Add range checks of index for listIterator() & addAll()

Author: andrei-punko

src/main/java/by/andd3dfx/collections/custom/CustomArrayList.java

@@ -154,6 +154,9 @@ public ListIterator<T> listIterator() {
 
     @Override
     public ListIterator<T> listIterator(int index) {
+        if (index < 0 || index > size) {
+            throw new IndexOutOfBoundsException();
+        }
         return new CustomListIterator<>(this, index);
     }
 
@@ -220,6 +223,9 @@ public boolean addAll(Collection<? extends T> c) {
 
     @Override
     public boolean addAll(int index, Collection<? extends T> c) {
+        if (index < 0 || index > size) {
+            throw new IndexOutOfBoundsException();
+        }
         if (c.isEmpty()) {
             return false;
         }

src/test/java/by/andd3dfx/collections/custom/CustomArrayListTest.java

@@ -536,6 +536,17 @@ public void listIteratorComplex() {
         assertThat(collectedItems).isEqualTo(List.of("Andrei", "Tikhon", "Tikhon", "Andrei", "Andrei", "Tikhon", "Nina"));
     }
 
+    @Test
+    public void listIteratorWithIndex_InvalidIndex() {
+        var list = new CustomArrayList<String>();
+        list.add("Andrei");
+        list.add("Tikhon");
+        list.add("Nina");
+
+        assertThrows(IndexOutOfBoundsException.class, () -> list.listIterator(-1));
+        assertThrows(IndexOutOfBoundsException.class, () -> list.listIterator(4));
+    }
+
     @Test
     public void listIteratorWithIndex() {
         var list = new CustomArrayList<String>();
@@ -568,6 +579,17 @@ public void subList() {
         assertThrows(NotImplementedException.class, () -> list.subList(1, 3));
     }
 
+    @Test
+    public void testAddAllWithIndex_InvalidIndex() {
+        var list = new CustomArrayList<>();
+        list.add("Andrei");
+        list.add("Tikhon");
+        list.add("Ilya");
+
+        assertThrows(IndexOutOfBoundsException.class, () -> list.addAll(-1, List.of("Taisia", "Nika")));
+        assertThrows(IndexOutOfBoundsException.class, () -> list.addAll(4, List.of("Taisia", "Nika")));
+    }
+
     @Test
     public void testAddAllWithIndex_NoResize() {
         var list = new CustomArrayList<>();