assertEquals(18, ServerMessageBlock2.size8(15, 2));
        }

        @Test
        @DisplayName("Should calculate padding")
        void testPad8() {
            testMessage.encode(new byte[1024], 0);
            // After header is written, padding depends on position
            int headerStart = testMessage.getHeaderStart();

        try {
            fileTypeHelper.init();
        } catch (Exception e) {
            fail("init() should not throw an exception: " + e.getMessage());
        }
    }

    public void test_add() {
        fileTypeHelper.add("application/pdf", "pdf");
        assertEquals("pdf", fileTypeHelper.get("application/pdf"));

        fileTypeHelper.add("text/plain", "text");

    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());
    assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
  }

  @SuppressWarnings("DoNotCall")
  public void testAdd() {
    ListIterator<String> iterator = create();

    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());
    assertEquals("b", iterator.next());
    assertEquals("b", iterator.previous());

        assertEquals(1, helper.duplicateHostList.size());
        assertEquals("www.test.com", helper.duplicateHostList.get(0).getRegularName());
    }

    public void test_add() {
        DuplicateHostHelper helper = new DuplicateHostHelper();

        DuplicateHost testHost = new DuplicateHost();
        testHost.setRegularName("www.test.com");

        assertThat(list.getLast(), is("1"));
        list.getLastEntry().remove();
        assertThat(list.size(), is(0));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testAdd() throws Exception {
        list.addLast("1");
        list.addLast("2");
        list.addLast("3");
        list.add(1, "4");
        assertThat(list.get(1), is("4"));
        assertThat(list.get(2), is("2"));

        target.add(4);
        C addThenFilter = filter(createUnfiltered(target), EVEN);

        assertThat(filterThenAdd).containsExactlyElementsIn(addThenFilter);
      }
    }

    public void testAdd() {
      for (List<Integer> contents : SAMPLE_INPUTS) {
        for (int toAdd = 0; toAdd < 10; toAdd++) {
          boolean expectedResult = createUnfiltered(contents).add(toAdd);