react-table/src/plugin-hooks/tests/useSortBy.test.js

import '@testing-library/react/cleanup-after-each'
import '@testing-library/jest-dom/extend-expect'
// NOTE: jest-dom adds handy assertions to Jest and is recommended, but not required

import React from 'react'
import { render, fireEvent } from '@testing-library/react'
import { useTable } from '../../hooks/useTable'
import { useSortBy } from '../useSortBy'

const data = [
  {
    firstName: 'tanner',
    lastName: 'linsley',
    age: 29,
    visits: 100,
    status: 'In Relationship',
    progress: 50,
  },
  {
    firstName: 'derek',
    lastName: 'perkins',
    age: 40,
    visits: 40,
    status: 'Single',
    progress: 80,
  },
  {
    firstName: 'joe',
    lastName: 'bergevin',
    age: 45,
    visits: 20,
    status: 'Complicated',
    progress: 10,
  },
]

const defaultColumn = {
  Cell: ({ value, column: { id } }) => `${id}: ${value}`,
}

function Table({ columns, data }) {
  const { getTableProps, headerGroups, rows, prepareRow } = useTable(
    {
      columns,
      data,
      defaultColumn,
    },
    useSortBy
  )

  return (
    <table {...getTableProps()}>
      <thead>
        {headerGroups.map(headerGroup => (
          <tr {...headerGroup.getHeaderGroupProps()}>
            {headerGroup.headers.map(column => (
              // Add the sorting props to control sorting. For this example
              // we can add them into the header props
              <th {...column.getHeaderProps(column.getSortByToggleProps())}>
                {column.render('Header')}
                {/* Add a sort direction indicator */}
                <span>
                  {column.sorted ? (column.sortedDesc ? ' 🔽' : ' 🔼') : ''}
                </span>
              </th>
            ))}
          </tr>
        ))}
      </thead>
      <tbody>
        {rows.map(
          (row, i) =>
            prepareRow(row) || (
              <tr {...row.getRowProps()}>
                {row.cells.map(cell => {
                  return <td {...cell.getCellProps()}>{cell.render('Cell')}</td>
                })}
              </tr>
            )
        )}
      </tbody>
    </table>
  )
}

function App() {
  const columns = React.useMemo(
    () => [
      {
        Header: 'Name',
        columns: [
          {
            Header: 'First Name',
            accessor: 'firstName',
          },
          {
            Header: 'Last Name',
            accessor: 'lastName',
          },
        ],
      },
      {
        Header: 'Info',
        columns: [
          {
            Header: 'Age',
            accessor: 'age',
          },
          {
            Header: 'Visits',
            accessor: 'visits',
          },
          {
            Header: 'Status',
            accessor: 'status',
          },
          {
            Header: 'Profile Progress',
            accessor: 'progress',
          },
        ],
      },
    ],
    []
  )

  return <Table columns={columns} data={data} />
}

test('renders a sortable table', () => {
  const { getByText, asFragment } = render(<App />)

  const beforeSort = asFragment()

  fireEvent.click(getByText('First Name'))

  const afterSort1 = asFragment()

  fireEvent.click(getByText('First Name'))

  const afterSort2 = asFragment()

  expect(beforeSort).toMatchDiffSnapshot(afterSort1)
  expect(afterSort1).toMatchDiffSnapshot(afterSort2)
})