1import * as Alchemy from "alchemy";
2import * as Railway from "alchemy/Railway";
3import * as Test from "alchemy/Test/Bun";
4import { expect } from "bun:test";
5import * as Console from "effect/Console";
6import * as Data from "effect/Data";
7import * as Effect from "effect/Effect";
8import * as Schedule from "effect/Schedule";
9import Stack from "../alchemy.run.ts";
10
11// A fresh Railway deployment (and the Railway Service behind it) can serve
12// transient 404/5xx responses while it propagates. `Test.getWhenReady`
13// fails on that cold-start window and retries until the site serves a
14// real response.
15const { getWhenReady } = Test;
16
17class AssetNotReady extends Data.TaggedError("AssetNotReady")<{
18 body: string;
19}> {}
20
21// While the asset manifest and Railway edge caches are still
22// propagating, a 200 body can be stale — the status alone can't
23// distinguish "not yet" from "served", so retry until the body matches.
24const getBodyWhenReady = (url: string, expected: string) =>
25 Effect.gen(function* () {
26 const res = yield* getWhenReady(url);
27 expect(res.status).toBe(200);
28 const body = yield* res.text;
29 if (!body.includes(expected)) {
30 return yield* Effect.fail(new AssetNotReady({ body }));
31 }
32 return body;
33 }).pipe(
34 Effect.retry({
35 while: (error) => error instanceof AssetNotReady,
36 schedule: Schedule.max([
37 Schedule.min([
38 Schedule.exponential("500 millis"),
39 Schedule.spaced("3 seconds"),
40 ]),
41 Schedule.recurs(20),
42 ]),
43 }),
44 );
45
46const { test, beforeAll, afterAll, deploy, destroy } = Test.make({
47 providers: Railway.providers(),
48 state: Alchemy.localState(),
49 profile: process.env.ALCHEMY_PROFILE,
50});
51
52// The first deploy runs the full SvelteKit build AND creates a Railway
53// distribution (~5-10 minutes), so give the hook far more headroom than
54// the default 120s.
55const stack = beforeAll(deploy(Stack).pipe(Effect.tap(Console.log)), {
56 timeout: 600_000,
57});
58// Deleting the Railway deployment takes several minutes too.
59afterAll.skipIf(!!process.env.NO_DESTROY)(destroy(Stack), {
60 timeout: 600_000,
61});
62
63const base = Effect.map(stack, ({ url }) => {
64 if (!url) throw new Error("expected the site to expose a url");
65 return String(url).replace(/\/+$/, "");
66});
67
68test(
69 "deploys and exposes a url",
70 Effect.gen(function* () {
71 const { url } = yield* stack;
72 expect(url).toBeString();
73 }),
74 { timeout: 180_000 },
75);
76
77test(
78 "serves the server-rendered home page",
79 Effect.gen(function* () {
80 const url = yield* base;
81 const res = yield* getWhenReady(url);
82 expect(res.status).toBe(200);
83 const html = yield* res.text;
84 expect(html).toContain("SvelteKit on Railway");
85 // The `GREETING` env value from alchemy.run.ts, read via `process.env`
86 // in the server `load` — proves the Railway Service rendered it at request time.
87 expect(html).toContain("Hello from SvelteKit on Railway!");
88 }),
89 { timeout: 180_000 },
90);
91
92test(
93 "serves the prerendered about page",
94 Effect.gen(function* () {
95 const url = yield* base;
96 const res = yield* getWhenReady(`${url}/about`);
97 expect(res.status).toBe(200);
98 }),
99 { timeout: 180_000 },
100);
101
102test(
103 "compiles tailwind from vite.config.ts",
104 Effect.gen(function* () {
105 const url = yield* base;
106 const res = yield* getWhenReady(url);
107 expect(res.status).toBe(200);
108 const html = yield* res.text;
109 // The page markup uses Tailwind utilities...
110 expect(html).toContain("text-3xl");
111 // ...and links the stylesheet Vite emitted via the project-owned
112 // vite.config.ts (the @tailwindcss/vite plugin), proving Alchemy loaded
113 // the config file natively instead of the programmatic fallback.
114 const match = html.match(/\/_app\/immutable\/assets\/[^"']+\.css/);
115 expect(match).not.toBeNull();
116 const css = yield* getBodyWhenReady(`${url}${match![0]}`, ".text-3xl");
117 expect(css).toContain(".text-3xl");
118 expect(css).toContain(".font-bold");
119 }),
120 { timeout: 180_000 },
121);
122
123test(
124 "serves a static asset from static/",
125 Effect.gen(function* () {
126 const url = yield* base;
127 const body = yield* getBodyWhenReady(`${url}/robots.txt`, "User-agent: *");
128 expect(body).toContain("User-agent: *");
129 }),
130 { timeout: 180_000 },
131);