dalijs/test/core/evaluator/evaluator_test.js

ES6 framework

import {Evaluator} from '../../../src/core/evaluator/Evaluator';
import assert from "assert";

var evaluator = new Evaluator();

describe('Evaluator', () => {
  describe('#eval()', () => {
    it('should return true if 10 is less than 5', () => {
      let context = {
        x: 10,
        y: 5
      };

      assert.equal(true, evaluator.eval(context, 'x > y'));
    });

    it('should return false if 10 is greather than 5', () => {
      let context = {
        x: 10,
        y: 5
      };

      assert.equal(false, evaluator.eval(context, 'x < y'));
    });

    it('should return true if x is not null', () => {
      let context = {
        x: 10
      };

      assert.equal(true, evaluator.eval(context, '!!x'));
    });

    it('should return false if x is null', () => {
      let context = {
        x: null
      };

      assert.equal(false, evaluator.eval(context, '!!x'));
    });
  });
});