frappe-charts/src/js/utils/test/helpers.test.js

https://frappe.github.io/charts

const assert  = require('assert');
const helpers = require('../helpers');

describe('utils.helpers', () => {
  it('should return a value fixed upto 2 decimals', () => {
    assert.equal(helpers.floatTwo(1.234), 1.23);
    assert.equal(helpers.floatTwo(1.456), 1.46);
    assert.equal(helpers.floatTwo(1),     1.00);
  });
});