zarm/lib/back-top/__tests__/index.test.js

基于 React 的移动端UI库

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

var _typeof = require("@babel/runtime/helpers/typeof");

var _regenerator = _interopRequireDefault(require("@babel/runtime/regenerator"));

var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));

var _react = require("@testing-library/react");

var React = _interopRequireWildcard(require("react"));

var _utils = require("../../../tests/utils");

var _BackTop = _interopRequireDefault(require("../BackTop"));

function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(e) { return e ? t : r; })(e); }

function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != _typeof(e) && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) { if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } } return n.default = e, t && t.set(e, n), n; }

describe('BackTop', function () {
  it('renders correctly', function () {
    var wrapper = (0, _react.render)( /*#__PURE__*/React.createElement(_BackTop.default, null));
    expect(wrapper.asFragment()).toMatchSnapshot();
  });
  it('should scroll to top after click it', /*#__PURE__*/(0, _asyncToGenerator2.default)( /*#__PURE__*/_regenerator.default.mark(function _callee() {
    var mockFn, scrollToSpy;
    return _regenerator.default.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            mockFn = jest.fn();
            (0, _react.render)( /*#__PURE__*/React.createElement(_BackTop.default, {
              mountContainer: document.body,
              onClick: mockFn
            }));
            scrollToSpy = jest.spyOn(window, 'scrollTo').mockImplementation(function (_, y) {
              window.scrollY = y;
              window.pageYOffset = y;
              document.documentElement.scrollTop = y;
            }); // jest.spyOn(window, 'requestAnimationFrame').mockImplementation(cb => setTimeout(cb, 0));

            window.scrollTo(0, 500);

            _react.fireEvent.scroll(window, {
              target: {
                y: 500
              }
            });

            (0, _utils.sleep)(5000);

            _react.fireEvent.click(document.body.querySelector('.za-back-top'));

            expect(mockFn).toBeCalled();
            scrollToSpy.mockRestore();

          case 9:
          case "end":
            return _context.stop();
        }
      }
    }, _callee);
  })));
});