Part 3: Testing

Deploy once per test file

test/integ.test.ts

import { expect } from "bun:test";
import * as Cloudflare from "@alchemy.run/cloudflare";
import * as E2B from "@alchemy.run/e2b";
import * as Test from "@alchemy.run/test/Bun";
import * as Alchemy from "alchemy";
import * as Effect from "effect/Effect";
import * as HttpClient from "effect/http/HttpClient";
import * as HttpClientRequest from "effect/http/HttpClientRequest";
import * as Layer from "effect/Layer";
import Stack from "../alchemy.run.ts";

const { test, beforeAll, afterAll, deploy, destroy } = Test.make({
  providers: Layer.mergeAll(Cloudflare.providers(), E2B.providers()),
  state: Alchemy.localState(),
});

const stack = beforeAll(deploy(Stack));
afterAll.skipIf(!!process.env.NO_DESTROY)(destroy(Stack));

test(
  "runs code in a one-shot sandbox",
  Effect.gen(function* () {
    const { url } = yield* stack;
    yield* Test.getWhenReady(url);
    const res = yield* HttpClient.execute(
      HttpClientRequest.post(`${url}/run`).pipe(HttpClientRequest.bodyText("console.log(6 * 7)")),
    );
    const body = (yield* res.json) as { stdout: string; exitCode: number };
    expect(body).toMatchObject({ stdout: "42\n", exitCode: 0 });
  }),
  { timeout: 180_000 },
);

The test deploys the Stack to a stage of its own, and destroys it afterwards. The Worker kills each sandbox when its request ends, so none is left behind.

Run it

bun test

Set NO_DESTROY=1 to keep the deployment between runs while you iterate.

Next

Part 4 deploys more than one copy.