package com.atlassian.plugins.rest.common.multipart.fileupload;
   
   import com.atlassian.plugins.rest.common.multipart.UnsupportedFileNameEncodingException;
   
   import org.apache.commons.fileupload.FileItem;
   import org.junit.Before;
   import org.junit.Test;
   
   import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNull;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  public class CommonsFileUploadFilePartTest
  {
      private FileItem fileItem;
  
      @Before
      public void setUp() 
      {
          fileItem = mock(FileItem.class);        
      }
      
      @Test
      public void fileItemWithNullFileNameShouldSimplyReturnNull() 
      {
          CommonsFileUploadFilePart filePart = new CommonsFileUploadFilePart(fileItem);
          assertNull(filePart.getName());
      }
      
      @Test
      public void fileItemWithASCIIFileNameShouldReturnASCIIValue() 
      {
          when(fileItem.getName()).thenReturn("normalchars");
          CommonsFileUploadFilePart filePart = new CommonsFileUploadFilePart(fileItem);
          assertEquals("normalchars", filePart.getName());
      }
      
      @Test
      public void fileItemWithEncodedUTF8FileNameShouldReturnUTF8Value() 
      {
          when(fileItem.getName()).thenReturn("=?utf-8?B?0YLQtdGB0YI=?=");
          CommonsFileUploadFilePart filePart = new CommonsFileUploadFilePart(fileItem);
          assertEquals("тест", filePart.getName());
      }
      
      @Test
      public void fileItemWithUnencodedUTF8FileNameShouldReturnUTF8Value() 
      {
          when(fileItem.getName()).thenReturn("тест");
          CommonsFileUploadFilePart filePart = new CommonsFileUploadFilePart(fileItem);
          assertEquals("тест", filePart.getName());
      }
      
      @Test(expected = UnsupportedFileNameEncodingException.class)
      public void fileItemNamedWithUnsupportedCharacterEncodingShouldThrowException() 
      {
          when(fileItem.getName()).thenReturn("=?utf-unknown?B?unknown?=");
          new CommonsFileUploadFilePart(fileItem);
      }
  }