dns-suite.js/node_modules/qap/test/big-random-pattern-test.js

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2017-01-14 02:04:27 +00:00
var log = console.log
, assert = require( 'assert' )
, Qap = require( '../' )
, plen = 10 * 1024 * 1024
, pattern = new Buffer( plen )
, i = 0
, rand = 0
, mb = 300
, dlen = mb * 1024 * 1024
, data = new Buffer( dlen )
, indexes = [ dlen / 1024, plen + dlen / 1024 ]
, qap = null
, results = null
;
for ( ; i < plen; ++i ) {
rand = Math.floor( Math.random() * 255 * plen ) % 255;
pattern[ i ] = rand;
};
qap = Qap( pattern );
// log( Math.log( ( Math.log( plen ) / Math.log( 2 ) ) ) );
log( '- copy', indexes.length, 'big patterns in test data' );
pattern.copy( data, indexes[ 0 ] );
pattern.copy( data, indexes[ 1 ] );
log( '- parse test data for big patterns' );
results = qap.parse( data );
log( '- check if results length is equal to', indexes.length );
assert.equal( results.length, indexes.length );
log( '- compare results and pre-defined indexes' );
assert.deepEqual( results, indexes );