Put speed test apart unit-test

[nicolas-zozol]

Cover tool will run it ultra slow

'expect complex calcul to true and lightening fast': function (test) {

        const calculus = '3 +2*4 -((2*45-78)*2*(6*(9-8)+3*(2-5)  ))';

        let time = new Date().getTime();
        let parsing = multParser().parse(stream.ofString(calculus));
        time = new Date().getTime() - time;

        test.equal(parsing.value, 83, 'complex multiplication');
        // Should be 10 ; Unfortunately cover Agent will make it ultra slow 
        test.ok(time < 200, 'parsing is too slow');

        test.done();
    },