overleaf/services/web/test/frontend/features/file-view/components/file-view.test.js

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import React from 'react'
import {
screen,
waitForElementToBeRemoved,
fireEvent,
} from '@testing-library/react'
import fetchMock from 'fetch-mock'
import { renderWithEditorContext } from '../../../helpers/render-with-context'
import FileView from '../../../../../frontend/js/features/file-view/components/file-view.js'
describe('<FileView/>', function () {
const textFile = {
name: 'example.tex',
linkedFileData: {
v1_source_doc_id: 'v1-source-id',
source_project_id: 'source-project-id',
source_entity_path: '/source-entity-path.ext',
provider: 'project_file',
},
created: new Date(2021, 1, 17, 3, 24).toISOString(),
}
const imageFile = {
id: '60097ca20454610027c442a8',
name: 'file.jpg',
linkedFileData: {
source_entity_path: '/source-entity-path',
provider: 'project_file',
},
}
beforeEach(function () {
fetchMock.reset()
})
describe('for a text file', function () {
it('shows a loading indicator while the file is loading', async function () {
renderWithEditorContext(
<FileView file={textFile} storeReferencesKeys={() => {}} />
)
await waitForElementToBeRemoved(() =>
screen.getByText('Loading', { exact: false })
)
})
it('shows messaging if the text view could not be loaded', async function () {
renderWithEditorContext(
<FileView file={textFile} storeReferencesKeys={() => {}} />
)
await screen.findByText('Sorry, no preview is available', {
exact: false,
})
})
})
describe('for an image file', function () {
it('shows a loading indicator while the file is loading', async function () {
renderWithEditorContext(
<FileView file={imageFile} storeReferencesKeys={() => {}} />
)
screen.getByText('Loading', { exact: false })
})
it('shows messaging if the image could not be loaded', function () {
renderWithEditorContext(
<FileView file={imageFile} storeReferencesKeys={() => {}} />
)
// Fake the image request failing as the request is handled by the browser
fireEvent.error(screen.getByRole('img'))
screen.findByText('Sorry, no preview is available', { exact: false })
})
})
})