slider/tests/utils.test.js at e4768ef4f07342dac67df66d73f421d26af0a90f · react-component/slider · GitHub

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/* eslint-disable max-len, no-undef */
import * as utils from '../src/utils';

describe('utils', () => {
  describe('getClosestPoint', () => {
    it('should return closest value', () => {
      const value = 40;
      const props = {
        marks: { 0: 0, 30: 30, 60: 60 },
        step: null,
        min: 0,
        max: 100
      };

      expect(utils.getClosestPoint(value, props)).toBe(30);
    });

    it('should return closest value (taking step into account)', () => {
      const value = 40;
      const props = {
        marks: { 0: 0, 30: 30, 60: 60 },
        step: 3,
        min: 0,
        max: 100
      };

      expect(utils.getClosestPoint(value, props)).toBe(39);
    });

    it('should return closest value (taking boundaries into account)', () => {
      const value = 102;
      const props = {
        marks: {},
        step: 6,
        min: 0,
        max: 100
      };

      expect(utils.getClosestPoint(value, props)).toBe(96);
    });

    it('should properly handle floating point arithmetic', () => {
      const value = 5.3;
      const props = {
        marks: {},
        step: 0.05,
        min: 0,
        max: 5.3
      };

      expect(utils.getClosestPoint(value, props)).toBe(5.3);
    });
  });
});