@SuppressWarnings("unchecked")
@Test
public void testGetPropertyNamesString05() throws Exception {

    // 入力値の設定
    String input1 = "";
    // テスト対象の実行
    Enumeration<String> actualEnum = PropertyUtil.getPropertyNames(input1);
    // 結果確認
    Field field = PropertyUtil.class.getDeclaredField("props");
    field.setAccessible(true);
    Map<String, String> expectedProps = (Map<String, String>) field.get(
            PropertyUtil.class);
    Enumeration<String> expectedEnum = Collections.enumeration(expectedProps
            .keySet());
    while (expectedEnum.hasMoreElements()) {
        String actualStr = (String) actualEnum.nextElement();
        String expectedStr = (String) expectedEnum.nextElement();
        assertEquals(expectedStr, actualStr);
    }
}