react/src/renderers/native/__tests__/createReactNativeComponentClass-test.js

/**
 * Copyright 2013-2015, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @emails react-core
 */

'use strict';

let createReactNativeComponentClass;
let React;
let ReactNative;

describe('createReactNativeComponentClass', () => {
  beforeEach(() => {
    jest.resetModules();

    createReactNativeComponentClass = require('createReactNativeComponentClass');
    React = require('react');
    ReactNative = require('react-native');
  });

  it('should register viewConfigs', () => {
    const textViewConfig = {
      validAttributes: {},
      uiViewClassName: 'Text',
    };
    const viewViewConfig = {
      validAttributes: {},
      uiViewClassName: 'View',
    };

    const Text = createReactNativeComponentClass(textViewConfig);
    const View = createReactNativeComponentClass(viewViewConfig);

    expect(Text).not.toBe(View);

    ReactNative.render(<Text />, 1);
    ReactNative.render(<View />, 1);
  });

  it('should not allow viewConfigs with duplicate uiViewClassNames to be registered', () => {
    const textViewConfig = {
      validAttributes: {},
      uiViewClassName: 'Text',
    };
    const altTextViewConfig = {
      validAttributes: {},
      uiViewClassName: 'Text', // Same
    };

    createReactNativeComponentClass(textViewConfig);

    expect(() => {
      createReactNativeComponentClass(altTextViewConfig);
    }).toThrow('Tried to register two views with the same name Text');
  });
});