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import type { Page, TestInfo } from '@playwright/test'
import type { NextWorkerFixture, FetchHandler } from './next-worker-fixture'
import type { NextOptions } from './next-options'
import type { FetchHandlerResult } from '../proxy'
import { handleRoute } from './page-route'
import { reportFetch } from './report'
export interface NextFixture {
onFetch: (handler: FetchHandler) => void
}
class NextFixtureImpl implements NextFixture {
public readonly testId: string
private fetchHandlers: FetchHandler[] = []
constructor(
private testInfo: TestInfo,
private options: NextOptions,
private worker: NextWorkerFixture,
private page: Page
) {
this.testId = testInfo.testId
worker.onFetch(this.testId, this.handleFetch.bind(this))
}
async setup(): Promise<void> {
const testHeaders = {
'Next-Test-Proxy-Port': String(this.worker.proxyPort),
'Next-Test-Data': this.testId,
}
await this.page
.context()
.route('**', (route) =>
handleRoute(route, this.page, testHeaders, this.handleFetch.bind(this))
)
}
teardown(): void {
this.worker.cleanupTest(this.testId)
}
onFetch(handler: FetchHandler): void {
this.fetchHandlers.push(handler)
}
private async handleFetch(request: Request): Promise<FetchHandlerResult> {
return reportFetch(this.testInfo, request, async (req) => {
for (const handler of this.fetchHandlers.slice().reverse()) {
const result = await handler(req.clone())
if (result) {
return result
}
}
if (this.options.fetchLoopback) {
return fetch(req.clone())
}
return undefined
})
}
}
export async function applyNextFixture(
use: (fixture: NextFixture) => Promise<void>,
{
testInfo,
nextOptions,
nextWorker,
page,
}: {
testInfo: TestInfo
nextOptions: NextOptions
nextWorker: NextWorkerFixture
page: Page
}
): Promise<void> {
const fixture = new NextFixtureImpl(testInfo, nextOptions, nextWorker, page)
await fixture.setup()
// eslint-disable-next-line react-hooks/rules-of-hooks -- not React.use()
await use(fixture)
fixture.teardown()
}
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