ReactNativeAttributePayload-test.internal.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.
 *
 * @jest-environment node
 */
'use strict';

const ReactNativeAttributePayload = require('../ReactNativeAttributePayload');

const diff = ReactNativeAttributePayload.diff;

describe('ReactNativeAttributePayload', () => {
  it('should work with simple example', () => {
    expect(diff({a: 1, c: 3}, {b: 2, c: 3}, {a: true, b: true})).toEqual({
      a: null,
      b: 2,
    });
  });

  it('should skip fields that are equal', () => {
    expect(
      diff(
        {a: 1, b: 'two', c: true, d: false, e: undefined, f: 0},
        {a: 1, b: 'two', c: true, d: false, e: undefined, f: 0},
        {a: true, b: true, c: true, d: true, e: true, f: true},
      ),
    ).toEqual(null);
  });

  it('should remove fields', () => {
    expect(diff({a: 1}, {}, {a: true})).toEqual({a: null});
  });

  it('should remove fields that are set to undefined', () => {
    expect(diff({a: 1}, {a: undefined}, {a: true})).toEqual({a: null});
  });

  it('should ignore invalid fields', () => {
    expect(diff({a: 1}, {b: 2}, {})).toEqual(null);
  });

  it('should use the diff attribute', () => {
    const diffA = jest.fn((a, b) => true);
    const diffB = jest.fn((a, b) => false);
    expect(
      diff(
        {a: [1], b: [3]},
        {a: [2], b: [4]},
        {a: {diff: diffA}, b: {diff: diffB}},
      ),
    ).toEqual({a: [2]});
    expect(diffA).toBeCalledWith([1], [2]);
    expect(diffB).toBeCalledWith([3], [4]);
  });

  it('should not use the diff attribute on addition/removal', () => {
    const diffA = jest.fn();
// ... (228 more lines)