### Question:
FileUtils { public FileInfo[] listFiles() { List<FileInfo> fileList = new ArrayList<FileInfo>(); String path = getRelativeSolutionPath(); File folder = new File( path ); if ( folder.exists() ) { File[] files = folder.listFiles(); for ( File file : files ) { String name = file.getName(); if ( file.isFile() ) { long lastModified = file.lastModified(); DateFormat fmt = LocaleHelper.getShortDateFormat( true, true ); Date modified = new Date(); modified.setTime( lastModified ); String modifiedStr = fmt.format( modified ); long size = file.length(); FileInfo info = new FileInfo(); info.setModified( modifiedStr ); info.setName( name ); info.setSize( size ); fileList.add( info ); } } } return fileList.toArray( new FileInfo[ fileList.size() ] ); }  FileInfo[] listFiles(); Boolean deleteFile( String aFileName ); static final String DEFAULT_RELATIVE_UPLOAD_FILE_PATH; }### Answer:
@Test public void testListFiles() { FileUtils fu = new FileUtils(); FileInfo [] files = fu.listFiles(); assertTrue( files != null && files.length > 0 ); }