8 replies

🔌 Multiple Workers · Miniflare

Hi, I have a main worker which has service bindings to two other workers. I would like to create jest integration test for the main worker. I have the directory structure similar to the one in https://miniflare.dev/core/mount and the main worker wrangler.toml has [miniflare.mounts] [build.upload]. I am creating a miniflare instance in the jest test file with a script path

describe('bluegreen routing', () => { const mf = new Miniflare({ envPath: true, packagePath: true, wranglerConfigPath: true, scriptPath: 'dist/index.mjs', modules: true }) it('should route to the green worker', async () => { const response = await mf.dispatchFetch('http://127.0.0.1/parent', { method: 'GET' }) if (response) { const parsedResp = await response.text() expect(parsedResp).toEqual('Green Hello World!') } }) })
describe('bluegreen routing', () => { const mf = new Miniflare({ envPath: true, packagePath: true, wranglerConfigPath: true, scriptPath: 'dist/index.mjs', modules: true }) it('should route to the green worker', async () => { const response = await mf.dispatchFetch('http://127.0.0.1/parent', { method: 'GET' }) if (response) { const parsedResp = await response.text() expect(parsedResp).toEqual('Green Hello World!') } }) })
describe('bluegreen routing', () => { const mf = new Miniflare({ envPath: true, packagePath: true, wranglerConfigPath: true, scriptPath: 'dist/index.mjs', modules: true }) it('should route to the green worker', async () => { const response = await mf.dispatchFetch('http://127.0.0.1/parent', { method: 'GET' }) if (response) { const parsedResp = await response.text() expect(parsedResp).toEqual('Green Hello World!') } }) })
describe('bluegreen routing', () => { const mf = new Miniflare({ envPath: true, packagePath: true, wranglerConfigPath: true, scriptPath: 'dist/index.mjs', modules: true }) it('should route to the green worker', async () => { const response = await mf.dispatchFetch('http://127.0.0.1/parent', { method: 'GET' }) if (response) { const parsedResp = await response.text() expect(parsedResp).toEqual('Green Hello World!') } }) })

This test exceeds the timeout. I get this error

ReferenceError: clearImmediate is not defined

ReferenceError: clearImmediate is not defined

ReferenceError: clearImmediate is not defined

ReferenceError: clearImmediate is not defined
Is this the right way to do jest tests with Miniflare?

🔌 Multiple Workers · Miniflare

Fun, full-featured, fully-local simulator for Cloudflare Workers

MrBBot•4/25/23, 11:29 AM

Hey!

Apologies for the delayed response. Are you trying to use clearImmediateclearImmediate inside your Worker? This isn't defined in the Workers sandbox, so will lead to the ReferenceErrorErrorReferenceErrorError you're seeing. Could you share the full stack trace for that error?

vasOP•4/25/23, 2:51 PM

Hi, I don't use clearImmediateclearImmediate in my worker. This is my worker code

import { Env } from './types/environment'

export default {
async fetch(request: Request, env: Env): Promise<Response> {
const nextHeader = request.headers.has(env.NEXT_HEADER)
console.log(green router is ${JSON.stringify(env)}green router is ${JSON.stringify(env)})
if (env.LIVE_ROUTER === 'blue') {
return nextHeader
? await env.GREEN_ROUTER.fetch(request)
: await env.BLUE_ROUTER.fetch(request)
} else {
return nextHeader
? await env.BLUE_ROUTER.fetch(request)
: await env.GREEN_ROUTER.fetch(request)
}
}
}

vasOP•4/25/23, 2:52 PM

And the test error is

Vvas Hi, I don't use `clearImmediate` in my worker. This is my worker code > import ...

MrBBot•4/25/23, 9:23 PM

Hmmm, could you share your Jest config? Are you using the miniflareminiflare test environment? You'll need to use the default Node environment, if you're constructing new Miniflare()new Miniflare() instances in your tests.

MMrBBot Hmmm, could you share your Jest config? Are you using the `miniflare` test envir...

vasOP•4/25/23, 10:53 PM

This is my jest config, I am using miniflare test environment

export default { preset: 'ts-jest/presets/default-esm', transform: { '^.+\\.tsx?$': [ 'ts-jest', { tsconfig: './tsconfig.json', useESM: true } ] }, testEnvironment: 'miniflare', testEnvironmentOptions: { scriptPath: 'dist/index.mjs', modules: true }, testTimeout: 10000 }export default { preset: 'ts-jest/presets/default-esm', transform: { '^.+\\.tsx?$': [ 'ts-jest', { tsconfig: './tsconfig.json', useESM: true } ] }, testEnvironment: 'miniflare', testEnvironmentOptions: { scriptPath: 'dist/index.mjs', modules: true }, testTimeout: 10000 }