parseHookNames-test.js — react Source File

Source Code

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow
 */

// Note that this test uses React components declared in the "__source__" directory.
// This is done to control if and how the code is transformed at runtime.
// Do not declare test components within this test file as it is very fragile.

function expectHookNamesToEqual(map, expectedNamesArray) {
  // Slightly hacky since it relies on the iterable order of values()
  expect(Array.from(map.values())).toEqual(expectedNamesArray);
}

function requireText(path, encoding) {
  const {existsSync, readFileSync} = require('fs');
  if (existsSync(path)) {
    return Promise.resolve(readFileSync(path, encoding));
  } else {
    return Promise.reject(`File not found "${path}"`);
  }
}

function initFetchMock() {
  const fetchMock = require('jest-fetch-mock');
  fetchMock.enableMocks();
  fetchMock.mockIf(/.+$/, request => {
    const url = request.url;
    const isLoadingExternalSourceMap = /external\/.*\.map/.test(url);
    if (isLoadingExternalSourceMap) {
      // Assert that url contains correct query params
      expect(url.includes('?foo=bar&param=some_value')).toBe(true);
      const fileSystemPath = url.split('?')[0];
      return requireText(fileSystemPath, 'utf8');
    }
    return requireText(url, 'utf8');
  });
  return fetchMock;
}

describe('parseHookNames', () => {
  let fetchMock;
  let inspectHooks;
  let parseHookNames;

  beforeEach(() => {
    jest.resetModules();

    jest.mock('source-map-support', () => {
      console.trace('source-map-support');
    });

    fetchMock = initFetchMock();

    inspectHooks =
      require('react-debug-tools/src/ReactDebugHooks').inspectHooks;
// ... (903 more lines)