pws-formula/tests/index.test.js

This is a formula execute the string or buffer format formula libray to get values from string or buffer.

/**
 * Project: pws-formula
 * Created Date: Friday, May 4th 2018, 11:09:37 am
 * Author: Thomas.Li
 * E-Mail: leeyinghui@hotmail.com
 * Intro: test the interface of index.js 
 * -----
 * Last Modified: Fri May 04 2018
 * Modified By: Thomas.Li
 * -----
 * Copyright (c) 2018 pareact
 * ------------------------------------
 * Always bet on Javascript!
 */


const formula = require('../index')
const expect = require('chai').expect;

describe('buffer function test', function () {
  let buf = Buffer.from('010304012345673e4d', 'hex');
  let f1 = 'pif(hx(3,2)>100, ht(0,2), hb(1,1))';
  let f2 = 'pif(hx(3,2)<100, ht(0,2), hb(1,1))';
  let f3 = 'pif(hx(3,2)>100, ht(-3,2), hb(1,1))';
  let f4 = 'pif(hx(3,2)<100, ht(0,2), hb(1,21))';
  it('f1 get 103', function () {
    expect(formula.getBuffValue(buf, [f1,])[0].data).to.equal(103);
  });
  it('f2 get 1', function () {
    expect(formula.getBuffValue(buf, [f2,])[0].data).to.equal(1);
  });
  it('f3 get false (negative)', function () {
    expect(formula.getBuffValue(buf, [f3,])[0].success).to.be.false;
  });
  it('f4 get false (21 not in 0-7)', function () {
    expect(formula.getBuffValue(buf, [f4,])[0].success).to.be.false;
  });
});

describe('str function test', function () {
  let str1 = ':F0061A0102090463FFFFFF5100080000E30000000000017A014C0497';
  let str2 = '~10012A0020680133B35A4300005F43CDCC6043CDCC5C4300005D4300005D4332322E330000604100-32.600C0400000B0409AD9CC439A9947420000009AD9CC43E77D';
  let f1 = 'pif(ab(0,3)==0, ax(8,4), ad(8,4))';
  let f2 = 'pif(ab(0,5)==0, ax(8,4), ad(8,4))';
  let f3 = 'pif(ap(14)>200, ac(62,8), ad(80,5))';
  let f4 = 'pif(ap(14)<200, ac(62,8), ad(80,5))';
  it('f1 get 521', function () {
    expect(formula.getStringValue(str1.slice(1), [f1,])[0].data).to.equal(521);
  });
  it('f2 get 209', function () {
    expect(formula.getStringValue(str1.slice(1), [f2,])[0].data).to.equal(209);
  });
  it('f1 should get true', function () {
    expect(formula.getStringValue(str1.slice(1), [f1,])[0].success).to.be.true;
  });
  it('f3 get 22.3', function () {
    expect(formula.getStringValue(str2.slice(1), [f3,])[0].data).to.equal(22.3);
  });
  it('f4 get -32.6', function () {
    expect(formula.getStringValue(str2.slice(1), [f4,])[0].data).to.equal(-32.6);
  });
});