}

    /**
     * @throws Exception
     */
    @Test
    public void testToPlainPattern() throws Exception {
        assertThat(toPlainPattern("y/M/d"), is("yyMMdd"));
    }

    }

    /**
     * @throws Exception
     */
    @Test
    public void testToPlainPattern() throws Exception {
        assertThat(toPlainPattern("y/M/d H:m:s"), is("yyMMdd HHmmss"));
    }

 * </tr>
 * <tr>
 * <td>{@link DateFormat#FULL}の形式</td>
 * <td>{@literal yyyy'年'M'月'd'日'}</td>
 * </tr>
 * <tr>
 * <td rowspan="4">プレーン形式</td>
 * <td>{@link DateFormat#SHORT}の区切り文字を除去した形式</td>
 * <td>{@literal yyMMdd}</td>
 * </tr>
 * <tr>
 * <td>{@link DateFormat#MEDIUM}の区切り文字を除去した形式</td>
 * <td>{@literal yyyyMMdd}</td>
 * </tr>
 * <tr>
 * <td>{@link DateFormat#LONG}の区切り文字を除去した形式</td>
 * <td>{@literal yyyyMMdd}</td>