dns-suite.js/node_modules/qap/test/small-buffer-start-index-an...

51 lines
2.0 KiB
JavaScript

var log = console.log
, assert = require( 'assert' )
, Qap = require( '../' )
, pattern = '-----hellofolks!\r\n\r\n'
, bpattern = new Buffer( pattern )
, plen = pattern.length
, mb = 10
, dlen = mb * 1024 * 1024
, data = new Buffer( dlen )
, qap = Qap( bpattern )
, occ = Math.floor( dlen / plen / plen / plen / plen )
, i = 0
, indexes = []
, stime = Date.now()
;
log( '- creating test buffer..(' + mb +' MB)' );
for ( ; i < dlen - pattern.length; i += pattern.length + ++occ ) {
indexes.push( i );
bpattern.copy( data, i );
};
log( '- buffer data copied in',( Date.now() - stime ) / 1000, 'secs' );
log( '- pattern length:', bpattern.length, 'bytes' );
log( '- patterns written:', indexes.length );
log( '- parse data from beginning..' );
var sptime = Date.now(),
offset = Math.floor( indexes.length / 2 ),
// parse data from the middle index
results = qap.parse( data, indexes[ offset ] ),
presults = null;
log( '- input data was parsed from the middle index in', ( ( Date.now() - sptime ) / 1000 ).toFixed( 2 ), 'secs' );
log( '- total results:', results.length );
assert.equal( results.length, indexes.length -offset, 'parsed results don\'t match with existing patterns ' + results.length + '!==' + indexes.length );
assert.deepEqual( results, indexes.slice( offset ), 'indexes and parsed indexes don\'t match' );
log( '- successfully compared parsed results and pre-recorded indexes..' );
log( '- re-parse data from result with index ' + offset + ' and limit results to 10..' );
presults = qap.parse( data, indexes[ offset ], 10 );
log( '- check partial results length (' + ( presults.length ) + ' === 10)' );
assert.equal( presults.length, 10, 'partial results length test failed' );
log( '- compare partial and limited results with pre-recorded results' );
assert.deepEqual( presults, indexes.slice( offset, offset + 10 ) , 'results don\'t match' );
log( '- all small buffer tests passed in',( ( Date.now() - stime ) / 1000 ).toFixed( 2 ), 'secs');