@Test
public void testExecute01() throws Exception {

    // テスト対象のインスタンス化
    PlainFileUpdateDAO fileUpdateDAO = new PlainFileUpdateDAO();
    // 引数の設定
    URL url = this.getClass().getResource("File_Empty.txt");
    String fileName = url.getPath();
    Class<PlainFileUpdateDAO_Stub01> clazz = PlainFileUpdateDAO_Stub01.class;
    // 前提条件の設定
    Map<String, ColumnFormatter> columnFormatterMap = new HashMap<String, ColumnFormatter>();
    columnFormatterMap.put("java.lang.String", new NullColumnFormatter());
    ReflectionTestUtils.setField(fileUpdateDAO, "columnFormatterMap",
            columnFormatterMap);
    // テスト実施
    FileLineWriter<PlainFileUpdateDAO_Stub01> fileLineWriter = fileUpdateDAO
            .execute(fileName, clazz);
    // 返却値の確認
    assertEquals(PlainFileLineWriter.class, fileLineWriter.getClass());
    assertSame(fileName, ReflectionTestUtils.getField(fileLineWriter,
            "fileName"));
    assertSame(clazz, ReflectionTestUtils.getField(fileLineWriter,
            "clazz"));
    assertSame(columnFormatterMap, ReflectionTestUtils.getField(
            fileLineWriter, "columnFormatterMap"));
}