pngFile.create( new ByteArrayInputStream( new byte[ 0 ] ), true, new NullProgressMonitor() );
assertNotNull( service );
model.setLossyCompression( true );
assertEquals( list( "jpeg" ), service.extensions() );
model.setFilePath4( txtFilePath );
assertValidationError( model.getFilePath4(), "File \"file.txt\" has an invalid extension. Only \"jpeg\" extension is allowed" );
model.setFilePath4( jpegFilePath );