42 lines
1.2 KiB
TypeScript
42 lines
1.2 KiB
TypeScript
/*
|
|
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
|
|
* or more contributor license agreements. Licensed under the Elastic License
|
|
* 2.0; you may not use this file except in compliance with the Elastic License
|
|
* 2.0.
|
|
*/
|
|
|
|
import React, { useContext } from 'react';
|
|
import { mount } from 'enzyme';
|
|
import { RootDragDropProvider, DragContext } from '.';
|
|
|
|
jest.useFakeTimers();
|
|
|
|
describe('RootDragDropProvider', () => {
|
|
test('reuses contexts for each render', () => {
|
|
const contexts: Array<{}> = [];
|
|
const TestComponent = ({ name }: { name: string }) => {
|
|
const context = useContext(DragContext);
|
|
contexts.push(context);
|
|
return (
|
|
<div data-test-subj="test-component">
|
|
{name} {!!context.dragging}
|
|
</div>
|
|
);
|
|
};
|
|
|
|
const RootComponent = ({ name }: { name: string }) => (
|
|
<RootDragDropProvider>
|
|
<TestComponent name={name} />
|
|
</RootDragDropProvider>
|
|
);
|
|
|
|
const component = mount(<RootComponent name="aaaa" />);
|
|
|
|
component.setProps({ name: 'bbbb' });
|
|
|
|
expect(component.find('[data-test-subj="test-component"]').text()).toContain('bbb');
|
|
expect(contexts.length).toEqual(2);
|
|
expect(contexts[0]).toStrictEqual(contexts[1]);
|
|
});
|
|
});
|