ConstructionCost/test/unit/others/rounding.js

/**
 * Created by Tony on 2017/3/28.
 */

var test = require('tape');
test('test javascript rounding: ', function (t) {
    var f1 = 2.35, f2 = 2.45, f3 = 2.449999999999999995, f4 = 2.44999999999999995;
    t.equal(Math.round(f1*10), 24);
    t.equal(Math.round(f2*10), 25);
    t.equal(Math.round(f3*10), 25);
    t.equal(Math.round(f4*10), 25);
    t.end();
});

test('test javascript fixed rounding: ', function (t) {
    var f1 = 2.35, f2 = 2.45, f3 = 2.449995;
    t.equal(f1.toFixed(1), '2.4');
    t.equal(f2.toFixed(1), '2.5');
    t.equal(f3.toFixed(1), '2.5');
    t.end();
});

//test('test javascript decimal: ', function (t) {
//    var x = new Decimal(0.1), y = new Decimal(0.2);
//    t.equal(x + y, 0.3);
//    t.end();
//});