我正在尝试使用enzyme
来断言DOM节点。我的Component
看起来像
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>
);
}
};
我的test
看起来像
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)
});
});
当我运行时,我得到了
● <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)
根据Enzyme
docs,
.contains()需要一个ReactElement,而不是一个选择器(就像许多其他选择器一样) 方法)。确保当你打电话给它时,你正在打电话给它 使用ReactElement或JSX表达式。
我做错了什么?
由于
更新
我删除了import expect from 'expect
并将其作为
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);
});
});
现在失败
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)
和
expect(wrapper.contains(<TableHeaderColumn/>)).to.equal(true);
我得到了
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)
我仍然无法在ReactElement