import { nextTestSetup } from 'e2e-utils' import { retry } from 'next-test-utils' describe('allow-development-build', () => { describe('with NODE_ENV set to development', () => { const { next } = nextTestSetup({ files: __dirname, env: { NODE_ENV: 'development', }, nextConfig: { experimental: { allowDevelopmentBuild: true, }, }, }) it('should warn about a non-standard NODE_ENV', () => { expect(next.cliOutput).toContain( 'You are using a non-standard "NODE_ENV" value in your environment' ) }) it.each(['app-page', 'pages-page'])( `should show React development errors in %s`, async (page) => { const browser = await next.browser(page, { pushErrorAsConsoleLog: true, }) await retry(async () => { const logs = await browser.log() const errorLogs = logs.filter((log) => log.source === 'error') expect(errorLogs).toEqual( expect.arrayContaining([ { message: expect.toBeOneOf([ expect.toBeOneOf([ expect.stringContaining( "Hydration failed because the server rendered HTML didn't match the client. As a result this tree will be regenerated on the client." ), expect.stringContaining( "Hydration failed because the server rendered text didn't match the client. As a result this tree will be regenerated on the client." ), ]), expect.stringContaining( 'There was an error while hydrating. Because the error happened outside of a Suspense boundary, the entire root will switch to client rendering.' ), ]), source: 'error', }, ]) ) }) } ) }) describe('with NODE_ENV not set to development', () => { const { next } = nextTestSetup({ files: __dirname, skipStart: true, nextConfig: { experimental: { allowDevelopmentBuild: true, }, }, }) it('should fail the build with a message about not setting NODE_ENV', async () => { await next.start().catch(() => {}) expect(next.cliOutput).toContain( "The experimental.allowDevelopmentBuild option requires NODE_ENV to be explicitly set to 'development'" ) }) }) })