Equation.js/dist/tests/equation.js
2015-08-26 02:21:31 +04:30

46 lines
1.4 KiB
JavaScript

'use strict';
var _interopRequireWildcard = function (obj) { return obj && obj.__esModule ? obj : { 'default': obj }; };
var _expect = require('chai');
var _M = require('../index.js');
var _M2 = _interopRequireWildcard(_M);
describe('Equations', function () {
it('should work with one variable', function () {
var equation = _M2['default'].equation('x+2');
_expect.expect(equation(2)).to.equal(4);
// Issue #10
var subtraction = _M2['default'].equation('x - 3');
_expect.expect(subtraction(10)).to.equal(7);
});
it('should work with multiple variables', function () {
var equation = _M2['default'].equation('x+y');
_expect.expect(equation(2, 4)).to.equal(6);
});
it('should work with multiple instances of the same variable', function () {
var equation = _M2['default'].equation('x*x');
_expect.expect(equation(4)).to.equal(16);
});
it('should only accept lowercase letters', function () {
var equation = _M2['default'].equation('X+2');
_expect.expect(equation).to['throw']();
});
it('should work with NumVariable expressions like 2x', function () {
var equation = _M2['default'].equation('2x + 6y');
_expect.expect(equation(4, 3)).to.equal(8 + 18);
});
it('Test case', function () {
var equation = _M2['default'].equation('2+x*(y+4)+z^2');
_expect.expect(equation(2, 4, 3)).to.equal(27);
});
});