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TypeError: Impossible de lire la propriété 'égale' de non définie

J'essaie d'utiliser enzyme pour affirmer les nœuds DOM. Mon Component ressemble à

import React, {Component} from 'react';
import TransactionListRow from './TransactionListRow';
import {Table, TableBody, TableHeader, TableHeaderColumn, TableRow} from 'material-ui/Table';

export default class TransactionList extends Component {
  render() {
    const { transactions } = this.props;

    return (
      <Table>
        <TableHeader displaySelectAll={false}>
          <TableRow>
            <TableHeaderColumn>Name</TableHeaderColumn>
            <TableHeaderColumn>Amount</TableHeaderColumn>
            <TableHeaderColumn>Transaction</TableHeaderColumn>
            <TableHeaderColumn>Category</TableHeaderColumn>
          </TableRow>
        </TableHeader>
        <TableBody>
          {transactions.map(transaction =>
            <TransactionListRow key={transaction.id} transaction={transaction}/>
          )}
        </TableBody>
      </Table>
    );
  }
};

Mon test ressemble à

import expect from 'expect';
import React from 'react';
import {mount} from 'enzyme';
import TransactionList from '../TransactionList';
import {TableHeaderColumn} from 'material-ui/Table';
import getMuiTheme from 'material-ui/styles/getMuiTheme';

describe("<TransactionList />", () => {
  const mountWithContext = (node) => mount(node, {
    context: {
      muiTheme: getMuiTheme(),
    },
    childContextTypes: {
      muiTheme: React.PropTypes.object.isRequired,
    }
  });


  it('renders five <TableHeaderColumn /> components', () => {
    const wrapper = mountWithContext(<TransactionList transactions={[]}/>)

    console.log(wrapper.html());
    // expect(wrapper.find('thead').length).toBe(1);
    expect(wrapper.contains(<TableHeaderColumn>Name</TableHeaderColumn>)).to.equal(true)
  });
});

Quand je lance ça, je reçois

  ● <TransactionList /> › renders five <TableHeaderColumn /> components

    TypeError: Cannot read property 'equal' of undefined

      at Object.<anonymous> (src/components/transactions/__tests__/TransactionList.test.js:24:250)
      at process._tickCallback (internal/process/next_tick.js:103:7)

Selon Enzymedocs ,

.contains () attend un ReactElement, pas un sélecteur (comme beaucoup d'autres méthodes). Assurez-vous que lorsque vous l'appelez, vous l'appelez avec un ReactElement ou une expression JSX.

Qu'est-ce que je fais mal?

Merci

[~ # ~] mise à jour [~ # ~]
J'ai supprimé le import expect from 'expect et l'a exécuté comme

import React from 'react';
import {mount} from 'enzyme';
import TransactionList from '../TransactionList';
import TableHeaderColumn from 'material-ui/Table';
import getMuiTheme from 'material-ui/styles/getMuiTheme';

describe("<TransactionList />", () => {
  const mountWithContext = (node) => mount(node, {
    context: {
      muiTheme: getMuiTheme(),
    },
    childContextTypes: {
      muiTheme: React.PropTypes.object.isRequired,
    }
  });


  it('renders five <TableHeaderColumn /> components', () => {
    const wrapper = mountWithContext(<TransactionList transactions={[]}/>)

    // console.log(wrapper.html());
    expect(wrapper.find('thead').length).toBe(1);
    expect(wrapper.find('td').length).toBe(0);

    // this is not working
    expect(wrapper.contains(<TableHeaderColumn/>)).toEqual(true);
  });
});

Il échoue maintenant avec

 FAIL  src/components/transactions/__tests__/TransactionList.test.js
  ● <TransactionList /> › renders five <TableHeaderColumn /> components

    expect(received).toEqual(expected)

    Expected value to equal:
      true
    Received:
      false

      at Object.<anonymous> (src/components/transactions/__tests__/TransactionList.test.js:26:164)

et avec

expect(wrapper.contains(<TableHeaderColumn/>)).to.equal(true);

Je reçois

      Warning: Unknown props `onMouseEnter`, `onMouseLeave`, `onClick` on <th> tag. Remove these props from the element. 
 FAIL  src/components/transactions/__tests__/TransactionList.test.js
  ● <TransactionList /> › renders five <TableHeaderColumn /> components

    TypeError: Cannot read property 'equal' of undefined

      at Object.<anonymous> (src/components/transactions/__tests__/TransactionList.test.js:26:166)
      at process._tickCallback (internal/process/next_tick.js:103:7)

Je ne peux toujours pas affirmer sur ReactElement

javascriptreactjsjestjsenzyme
17
daydreamer

Ce n'est pas un problème de Enzyme.

expect(...).to est undefined car vous avez installé expect.js et vous utilisez chai syntaxe.

cette

expect(wrapper.contains(<TableHeaderColumn>Name</TableHeaderColumn>)).to.equal(true)

devrait être

expect(wrapper.contains(<TableHeaderColumn>Name</TableHeaderColumn>)).toEqual(true)
52
QoP