@tvkitchen/countertop/dist/tools/utils/__tests__/index.unit.test.js

The entry point for developers who want to set up a TV Kitchen.

"use strict";

var _ = require("..");

describe('index', () => {
  describe('methodExists', () => {
    it('should return false if the method does not exist', () => {
      const x = {};
      expect((0, _.methodExists)('foo', x)).toBe(false);
    });
    it('should return false if the attribute is not a method', () => {
      const x = {
        foo: 'bar'
      };
      expect((0, _.methodExists)('foo', x)).toBe(false);
    });
    it('should return true if the method does exist', () => {
      const x = {
        foo: () => 'bar'
      };
      expect((0, _.methodExists)('foo', x)).toBe(true);
    });
  });
  describe('arraysHaveOverlap', () => {
    it('should return false if they share no common elements', () => {
      expect((0, _.arraysHaveOverlap)([1, 2, 3], [4, 5])).toBe(false);
      expect((0, _.arraysHaveOverlap)([], [4, 5])).toBe(false);
    });
    it('should return true if they share common elements', () => {
      expect((0, _.arraysHaveOverlap)([1, 2, 3], [4, 5, 1])).toBe(true);
    });
  });
  describe('by', () => {
    it('should return a function that sorts correctly', () => {
      const fn = (0, _.by)('id');
      expect(fn({
        id: 1
      }, {
        id: 2
      })).toBe(-1);
      expect(fn({
        id: 2
      }, {
        id: 1
      })).toBe(1);
    });
  });
});