assertThat(i.next(), is("bbb"));
        assertThat(i.next(), is("ccc"));
        assertThat(i.next(), is("aaa"));
        lru.put("ddd", "444");
        assertThat(lru.size(), is(3));
        assertThat(lru.get("bbb"), is(nullValue()));
        i = lru.keySet().iterator();
        assertThat(i.next(), is("ccc"));
        assertThat(i.next(), is("aaa"));
        assertThat(i.next(), is("ddd"));

     */
    @Test
    public void testEntrySet() throws Exception {
        Iterator<Map.Entry<String, String>> i = map.entrySet().iterator();
        assertThat(i.next().getKey(), is(nullValue()));
        assertThat(i.next().getKey(), is("1"));
        assertThat(i.next().getKey(), is("2"));
    }

    /**
     * Test method for {@link org.seasar.util.collection.ArrayIterator#remove()}
     * .
     */
    @Test

        throw new ClUnsupportedOperationException("remove");
    }

    @Override
    public boolean hasNext() {
        return false;
    }

    @Override
    public T next() {
        throw new ClUnsupportedOperationException("next");
    }

    /**
     * Test method for {@link org.codelibs.core.collection.EmptyIterator#next()}.
     */
    @Test
    public void testNext() {
        exception.expect(ClUnsupportedOperationException.class);
        exception.expectMessage(is("next"));
        final EmptyIterator<String> emptyIterator = new EmptyIterator<String>();
        emptyIterator.next();
    }

        this.index = 0;
    }

    @Override
    public boolean hasNext() {
        return iterator.hasNext();
    }

    @Override
    public Indexed<T> next() {
        return new Indexed<>(iterator.next(), index++);
    }

    @Override
    public void remove() {
        throw new ClUnsupportedOperationException("remove");
    }

        buf.append(cause.getMessage()).append(" : [");
        SQLException next = cause.getNextException();
        while (next != null) {
            buf.append(MessageFormatter.getSimpleMessage("ECL0071", next.getMessage(), Integer.toString(next.getErrorCode()),
                    next.getSQLState())).append("], [");
            next = next.getNextException();
        }
        Throwable t = cause.getCause();

    public boolean hasNext() {
        if (!includeObject && clazz == Object.class) {
            return false;
        }
        return clazz != null;
    }

    @Override
    public Class<?> next() {
        if (!hasNext()) {
            throw new NoSuchElementException();
        }
        final Class<?> result = clazz;
        clazz = clazz.getSuperclass();
        return result;
    }

     */
    public SingleValueIterator(final E value) {
        this.value = value;
    }

    @Override
    public boolean hasNext() {
        return hasNext;
    }

    @Override
    public E next() {
        if (!hasNext) {
            throw new NoSuchElementException();
        }
        hasNext = false;
        return value;
    }

    @Override
    public void remove() {

        final Iterator<URL> itr = ClassLoaderUtil.getResources(this.getClass(), name);
        assertThat(itr, is(notNullValue()));
        final URL url = itr.next();
        assertThat(url, is(notNullValue()));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testIsAncestor() throws Exception {

    @Override
    public boolean hasNext() {
        if (line == EMPTY) {
            line = ReaderUtil.readLine(reader);
        }
        return line != null;
    }

    @Override
    public String next() {
        if (!hasNext()) {
            throw new NoSuchElementException();
        }
        final String result = line;
        line = EMPTY;
        return result;
    }

    @Override