t3-code-android-nightly/.repos/alchemy-effect/examples/gcp-website-astro/test/integ.test.ts

import * as Alchemy from "alchemy";
import * as GCP from "alchemy/GCP";
import * as Test from "alchemy/Test/Bun";
import { describe, expect } from "bun:test";
import * as Console from "effect/Console";
import * as Data from "effect/Data";
import * as Effect from "effect/Effect";
import * as Schedule from "effect/Schedule";
import { spawnSync } from "node:child_process";
import Stack from "../alchemy.run.ts";

// A fresh Cloud Run revision can answer transient 404/5xx responses while
// its URL starts serving. `Test.getWhenReady` retries through that
// cold-start window until the site serves a real response.
const { getWhenReady } = Test;

class AssetNotReady extends Data.TaggedError("AssetNotReady")<{
  body: string;
}> {}

// Retry until the body matches — the status alone can't distinguish a
// cold start from a served page.
const getBodyWhenReady = (url: string, expected: string) =>
  Effect.gen(function* () {
    const res = yield* getWhenReady(url);
    expect(res.status).toBe(200);
    const body = yield* res.text;
    if (!body.includes(expected)) {
      return yield* Effect.fail(new AssetNotReady({ body }));
    }
    return body;
  }).pipe(
    Effect.retry({
      while: (error) => error instanceof AssetNotReady,
      schedule: Schedule.max([
        Schedule.min([
          Schedule.exponential("500 millis"),
          Schedule.spaced("3 seconds"),
        ]),
        Schedule.recurs(20),
      ]),
    }),
  );

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

// The image is built locally, so the whole suite needs Docker.
const dockerAvailable =
  spawnSync("docker", ["info"], { stdio: "ignore", timeout: 15_000 }).status ===
  0;

describe.skipIf(!dockerAvailable)("gcp-website-astro", () => {
  // The first deploy runs the Astro build, builds and pushes the image, and
  // rolls out Cloud Run, so give the hook far more headroom than the default.
  const stack = beforeAll(deploy(Stack).pipe(Effect.tap(Console.log)), {
    timeout: 1_200_000,
  });
  afterAll.skipIf(!!process.env.NO_DESTROY)(destroy(Stack), {
    timeout: 1_200_000,
  });

  const base = Effect.map(stack, ({ url }) => {
    if (!url) throw new Error("expected the site to expose a Cloud Run url");
    return String(url).replace(/\/+$/, "");
  });

  test(
    "deploys and exposes a url",
    Effect.gen(function* () {
      const { url } = yield* stack;
      expect(url).toBeString();
    }),
    { timeout: 180_000 },
  );

  test(
    "serves the server-rendered home page",
    Effect.gen(function* () {
      const url = yield* base;
      const res = yield* getWhenReady(url);
      expect(res.status).toBe(200);
      const html = yield* res.text;
      // The `GREETING` env value from alchemy.run.ts, read via
      // `process.env` in the page frontmatter — proves the container
      // rendered it at request time.
      expect(html).toContain("Hello from Astro on Cloud Run!");
      expect(html).toContain("server-rendered on Cloud Run");
    }),
    { timeout: 180_000 },
  );

  test(
    "serves the prerendered about page",
    Effect.gen(function* () {
      const url = yield* base;
      const res = yield* getWhenReady(`${url}/about/`);
      expect(res.status).toBe(200);
    }),
    { timeout: 180_000 },
  );

  test(
    "compiles tailwind from astro.config.ts",
    Effect.gen(function* () {
      const url = yield* base;
      // The utility class in the markup proves the page shipped with Tailwind
      // classes; wait until the deployed HTML includes it.
      const html = yield* getBodyWhenReady(url, "text-3xl");

      // Astro either links an external compiled stylesheet or inlines small
      // ones as a <style> block — accept both, but the compiled rule for the
      // utility must be served either way. That rule only exists if the
      // @tailwindcss/vite plugin from the project's own astro.config.ts ran.
      const link = html.match(
        /<link[^>]*rel="stylesheet"[^>]*href="([^"]+)"[^>]*>/,
      );
      if (link) {
        const href = link[1]!;
        const cssUrl = href.startsWith("http")
          ? href
          : `${url}${href.startsWith("/") ? "" : "/"}${href}`;
        const css = yield* getBodyWhenReady(cssUrl, ".text-3xl");
        expect(css).toContain(".text-3xl");
      } else {
        const style = html.match(/<style[^>]*>([\s\S]*?)<\/style>/);
        expect(style).not.toBeNull();
        expect(style![1]).toContain(".text-3xl");
      }
    }),
    { timeout: 180_000 },
  );

  test(
    "serves a static asset from public/",
    Effect.gen(function* () {
      const url = yield* base;
      const body = yield* getBodyWhenReady(
        `${url}/robots.txt`,
        "User-agent: *",
      );
      expect(body).toContain("User-agent: *");
    }),
    { timeout: 180_000 },
  );
});