overleaf/services/web/test/frontend/features/chat/components/chat-pane.test.js

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import React from 'react'
import { expect } from 'chai'
import {
render,
screen,
waitForElementToBeRemoved
} from '@testing-library/react'
import fetchMock from 'fetch-mock'
import ChatPane from '../../../../../frontend/js/features/chat/components/chat-pane'
import {
stubChatStore,
stubMathJax,
stubUIConfig,
tearDownChatStore,
tearDownMathJaxStubs,
tearDownUIConfigStubs
} from './stubs'
describe('<ChatPane />', function() {
const currentUser = {
id: 'fake_user',
first_name: 'fake_user_first_name',
email: 'fake@example.com'
}
const testMessages = [
{
content: 'a message',
user: currentUser,
timestamp: new Date().getTime()
},
{
content: 'another message',
user: currentUser,
timestamp: new Date().getTime()
}
]
beforeEach(function() {
stubChatStore({ user: currentUser })
stubUIConfig()
stubMathJax()
fetchMock.reset()
})
afterEach(function() {
tearDownChatStore()
tearDownUIConfigStubs()
tearDownMathJaxStubs()
fetchMock.reset()
})
it('renders multiple messages', async function() {
fetchMock.get(/messages/, testMessages)
render(<ChatPane resetUnreadMessages={() => {}} />)
await screen.findByText('a message')
await screen.findByText('another message')
})
it('A loading spinner is rendered while the messages are loading, then disappears', async function() {
fetchMock.get(/messages/, [])
render(<ChatPane resetUnreadMessages={() => {}} />)
await waitForElementToBeRemoved(() => screen.getByText('Loading…'))
})
describe('"send your first message" placeholder', function() {
it('is rendered when there are no messages ', async function() {
fetchMock.get(/messages/, [])
render(<ChatPane resetUnreadMessages={() => {}} />)
await screen.findByText('Send your first message to your collaborators')
})
it('is not rendered when messages are displayed', function() {
fetchMock.get(/messages/, testMessages)
render(<ChatPane resetUnreadMessages={() => {}} />)
expect(
screen.queryByText('Send your first message to your collaborators')
).to.not.exist
})
})
})