lenient().when(mockResource3.getName()).thenReturn("file3.txt");
    }

    /**
     * Test iterator with no filter - all elements should be returned.
     */
    @Test
    void testIteratorWithoutFilter() {
        // Given
        when(mockDelegate.hasNext()).thenReturn(true, true, true, false);
        when(mockDelegate.next()).thenReturn(mockFileEntry1, mockFileEntry2, mockFileEntry3);