react-hook-form/src/__tests__/utils/remove.test.ts

import remove from '../../utils/remove';

describe('remove', () => {
  it('should remove item accordingly', () => {
    expect(
      remove([, , { type: 'required', message: '', ref: 'test' }], 1),
    ).toEqual([undefined, { type: 'required', message: '', ref: 'test' }]);

    expect(
      remove([, , { type: 'required', message: '', ref: 'test' }], [1, 2]),
    ).toEqual([]);

    expect(
      remove([, , { type: 'required', message: '', ref: 'test' }], [0, 1]),
    ).toEqual([{ type: 'required', message: '', ref: 'test' }]);

    expect(
      remove(
        [
          ,
          ,
          { type: 'required', message: '', ref: 'test' },
          { type: 'required', message: '', ref: 'test' },
          null,
          ,
        ],
        [3, 2],
      ),
    ).toEqual([]);

    expect(
      remove(
        [
          ,
          ,
          { type: 'required', message: '', ref: 'test' },
          { type: 'required', message: '', ref: 'test' },
          null,
          ,
        ],
        [1, 4],
      ),
    ).toEqual([
      undefined,
      { type: 'required', message: '', ref: 'test' },
      { type: 'required', message: '', ref: 'test' },
      undefined,
    ]);

    expect(remove([true, true, true], [1])).toEqual([true, true]);
    expect(remove([true, true, true], [0])).toEqual([true, true]);

    expect(
      remove([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], [6, 7, 8, 9, 10, 11]),
    ).toEqual([0, 1, 2, 3, 4, 5]);
    expect(
      remove([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], [11, 10, 9, 8, 7, 6]),
    ).toEqual([0, 1, 2, 3, 4, 5]);
  });

  it('should remove correctly with indexes which contains gap', () => {
    expect(
      remove(
        [
          ,
          ,
          { type: 'required', message: '', ref: 'test' },
          { type: 'required', message: '', ref: 'test' },
          null,
          { type: 'required', message: '', ref: 'test' },
          ,
          { type: 'required', message: '', ref: 'test' },
        ],
        [2, 5],
      ),
    ).toEqual([
      ,
      ,
      { type: 'required', message: '', ref: 'test' },
      null,
      ,
      { type: 'required', message: '', ref: 'test' },
    ]);
  });

  it('should remove all items', () => {
    expect(
      remove(
        [
          {
            firstName: '1',
            lastName: 'Luo',
            id: '75309979-e340-49eb-8016-5f67bfb56c1c',
          },
          {
            firstName: '2',
            lastName: 'Luo',
            id: '75309979-e340-49eb-8016-5f67bfb56c1c',
          },
          {
            firstName: '3',
            lastName: 'Luo',
            id: '75309979-e340-49eb-8016-5f67bfb56c1c',
          },
          {
            firstName: '4',
            lastName: 'Luo',
            id: '75309979-e340-49eb-8016-5f67bfb56c1c',
          },
          {
            firstName: '5',
            lastName: 'Luo',
            id: '75309979-e340-49eb-8016-5f67bfb56c1c',
          },
          {
            firstName: '6',
            lastName: 'Luo',
            id: '75309979-e340-49eb-8016-5f67bfb56c1c',
          },
          {
            firstName: '7',
            lastName: 'Luo',
            id: '75309979-e340-49eb-8016-5f67bfb56c1c',
          },
          {
            firstName: '8',
            lastName: 'Luo',
            id: '75309979-e340-49eb-8016-5f67bfb56c1c',
          },
          {
            firstName: '9',
            lastName: 'Luo',
            id: '75309979-e340-49eb-8016-5f67bfb56c1c',
          },
        ],
        [0, 1, 2, 3, 4, 5, 6, 7, 8],
      ),
    ).toEqual([]);
  });
});