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test-utils.tsx
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test-utils.tsx
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import React from 'react'
import { BrowserRouter } from 'react-router-dom'
import { fireEvent, render, screen } from '@testing-library/react'
import { QueryClient, QueryClientProvider } from 'react-query'
import { rest } from 'msw'
import { setupServer } from 'msw/node'
import { json } from '@oxide/api-mocks'
import 'whatwg-fetch'
import '@testing-library/jest-dom'
import { routes } from './routes'
import { handlers, resetDb } from '@oxide/api-mocks'
import { afterAll, afterEach, beforeAll } from 'vitest'
import { setLogger } from 'react-query'
// react-query calls console.error whenever a request fails.
// this is annoying and we don't need it. leave log and warn there
// just in case they tell us something useful
setLogger({
log: console.log,
warn: console.warn,
error: () => {},
})
/*****************************************
* MSW
****************************************/
const server = setupServer(...handlers)
beforeAll(() => server.listen())
afterEach(() => {
resetDb()
server.resetHandlers()
})
afterAll(() => server.close())
// Override request handlers in order to test special cases
export function override(
method: keyof typeof rest,
path: string,
status: number,
body: string | Record<string, unknown>
) {
server.use(
rest[method](path, (_req, res, ctx) =>
typeof body === 'string'
? res(ctx.status(status), ctx.text(body))
: res(json(body, status))
)
)
}
/*****************************************
* RENDERING
****************************************/
const queryClient = new QueryClient({
defaultOptions: {
queries: {
retry: false,
},
},
})
// this is necessary to prevent requests left in flight at the end of a test from
// coming back during another test and triggering whatever they would trigger
afterEach(() => queryClient.clear())
const customRender = (ui: React.ReactElement) =>
render(ui, {
wrapper: ({ children }) => (
<QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
),
})
export function renderAppAt(url: string) {
window.history.pushState({}, 'Test page', url)
return render(routes, {
wrapper: ({ children }) => (
<BrowserRouter>
<QueryClientProvider client={queryClient}>
{children}
</QueryClientProvider>
</BrowserRouter>
),
})
}
/*****************************************
* TESTING LIBRARY
****************************************/
export * from '@testing-library/react'
import userEvent from '@testing-library/user-event'
export { customRender as render, userEvent }
// convenience functions so we can click and type in a one-liner. these were
// initially created to use the user-event library, but it was remarkably slow.
// see if those issues are improved before trying that again
export async function clickByRole(role: string, name: string) {
const element = screen.getByRole(role, { name })
await userEvent.click(element)
}
export function typeByRole(role: string, name: string, text: string) {
const element = screen.getByRole(role, { name })
fireEvent.change(element, { target: { value: text } })
}