@Test
public void putMetaDatasShouldAddMetaDataIntoGivenMap(){

    Map<String,Object> metaDatas = new HashMap<String, Object>();
    MultiParts.putMetaDatas(metaDatas, "contentType", "fileName");
    assertEquals("contentType", metaDatas.get("multipart.content-type"));
    assertEquals("fileName", metaDatas.get("multipart.filename"));
    assertTrue((Boolean)metaDatas.get("multipart.flag"));
}