1import * as AWS from "alchemy/AWS";
2import * as Test from "alchemy/Test/Bun";
3import { expect } from "bun:test";
4import * as Console from "effect/Console";
5import * as Data from "effect/Data";
6import * as Effect from "effect/Effect";
7import * as Schedule from "effect/Schedule";
8import Stack from "../alchemy.run.ts";
9
10// A fresh CloudFront distribution (and the Lambda behind it) can serve
11// transient 404/5xx responses while it propagates. `Test.getWhenReady`
12// fails on that cold-start window and retries until the site serves a
13// real response.
14const { getWhenReady } = Test;
15
16class AssetNotReady extends Data.TaggedError("AssetNotReady")<{
17 body: string;
18}> {}
19
20// While the asset manifest and CloudFront edge caches are still
21// propagating, a 200 body can be stale — the status alone can't
22// distinguish "not yet" from "served", so retry until the body matches.
23const getBodyWhenReady = (url: string, expected: string) =>
24 Effect.gen(function* () {
25 const res = yield* getWhenReady(url);
26 expect(res.status).toBe(200);
27 const body = yield* res.text;
28 if (!body.includes(expected)) {
29 return yield* Effect.fail(new AssetNotReady({ body }));
30 }
31 return body;
32 }).pipe(
33 Effect.retry({
34 while: (error) => error instanceof AssetNotReady,
35 schedule: Schedule.max([
36 Schedule.min([
37 Schedule.exponential("500 millis"),
38 Schedule.spaced("3 seconds"),
39 ]),
40 Schedule.recurs(20),
41 ]),
42 }),
43 );
44
45const { test, beforeAll, afterAll, deploy, destroy } = Test.make({
46 providers: AWS.providers(),
47 state: AWS.state(),
48});
49
50// The first deploy runs the full SvelteKit build AND creates a CloudFront
51// distribution (~5-10 minutes), so give the hook far more headroom than
52// the default 120s.
53const stack = beforeAll(deploy(Stack).pipe(Effect.tap(Console.log)), {
54 timeout: 1_200_000,
55});
56// Deleting the CloudFront distribution takes several minutes too.
57afterAll.skipIf(!!process.env.NO_DESTROY)(destroy(Stack), {
58 timeout: 1_200_000,
59});
60
61const base = Effect.map(stack, ({ url }) => {
62 if (!url) throw new Error("expected the site to expose a CloudFront url");
63 return String(url).replace(/\/+$/, "");
64});
65
66test(
67 "deploys and exposes a url",
68 Effect.gen(function* () {
69 const { url } = yield* stack;
70 expect(url).toBeString();
71 }),
72 { timeout: 180_000 },
73);
74
75test(
76 "serves the server-rendered home page",
77 Effect.gen(function* () {
78 const url = yield* base;
79 const res = yield* getWhenReady(url);
80 expect(res.status).toBe(200);
81 const html = yield* res.text;
82 expect(html).toContain("SvelteKit on AWS");
83 // The `GREETING` env value from alchemy.run.ts, read via `process.env`
84 // in the server `load` — proves the Lambda rendered it at request time.
85 expect(html).toContain("Hello from SvelteKit on AWS!");
86 }),
87 { timeout: 180_000 },
88);
89
90test(
91 "serves the prerendered about page",
92 Effect.gen(function* () {
93 const url = yield* base;
94 const res = yield* getWhenReady(`${url}/about`);
95 expect(res.status).toBe(200);
96 }),
97 { timeout: 180_000 },
98);
99
100test(
101 "compiles tailwind from vite.config.ts",
102 Effect.gen(function* () {
103 const url = yield* base;
104 const res = yield* getWhenReady(url);
105 expect(res.status).toBe(200);
106 const html = yield* res.text;
107 // The page markup uses Tailwind utilities...
108 expect(html).toContain("text-3xl");
109 // ...and links the stylesheet Vite emitted via the project-owned
110 // vite.config.ts (the @tailwindcss/vite plugin), proving Alchemy loaded
111 // the config file natively instead of the programmatic fallback.
112 const match = html.match(/\/_app\/immutable\/assets\/[^"']+\.css/);
113 expect(match).not.toBeNull();
114 const css = yield* getBodyWhenReady(`${url}${match![0]}`, ".text-3xl");
115 expect(css).toContain(".text-3xl");
116 expect(css).toContain(".font-bold");
117 }),
118 { timeout: 180_000 },
119);
120
121test(
122 "serves a static asset from static/",
123 Effect.gen(function* () {
124 const url = yield* base;
125 const body = yield* getBodyWhenReady(`${url}/robots.txt`, "User-agent: *");
126 expect(body).toContain("User-agent: *");
127 }),
128 { timeout: 180_000 },
129);