1import * as AWS from "@/AWS";
2import * as Core from "@/Test/Core";
3import * as Test from "@/Test/Alchemy";
4import { describe, expect } from "alchemy-test";
5import * as Data from "effect/Data";
6import * as Effect from "effect/Effect";
7import * as Schedule from "effect/Schedule";
8import * as HttpClient from "effect/http/HttpClient";
9import * as HttpClientRequest from "effect/http/HttpClientRequest";
10import CognitoTriggerFunctionLive, {
11 CognitoTriggerFunction,
12} from "./trigger-handler";
13
14const testOptions = { providers: AWS.providers() };
15const { test, beforeAll, afterAll } = Test.make(testOptions);
16const sharedStack = Core.scratchStack(testOptions, "CognitoTriggers");
17
18// Lambda function URL cold-start (DNS, IAM propagation, init) can take well
19// over 60s on a fresh deploy under parallel-suite load.
20const readinessPolicy = Schedule.max([
21 Schedule.fixed("2 seconds"),
22 Schedule.recurs(75),
23]);
24
25let baseUrl: string;
26
27class TransientUpstream extends Data.TaggedError("TransientUpstream")<{
28 readonly status: number;
29 readonly body: string;
30}> {}
31
32// Retry transient 5xx only (cold re-init, IAM / trigger-permission
33// propagation); 4xx and assertion failures surface immediately.
34const send = (request: HttpClientRequest.HttpClientRequest) =>
35 HttpClient.execute(request).pipe(
36 Effect.flatMap((response) =>
37 response.status >= 500
38 ? response.text.pipe(
39 Effect.flatMap((body) =>
40 Effect.fail(
41 new TransientUpstream({ status: response.status, body }),
42 ),
43 ),
44 )
45 : Effect.succeed(response),
46 ),
47 Effect.retry({
48 while: (e) => e._tag === "TransientUpstream",
49 schedule: Schedule.max([
50 Schedule.exponential("500 millis"),
51 Schedule.recurs(6),
52 ]),
53 }),
54 );
55
56const decodeJwtPayload = (token: string): Record<string, unknown> =>
57 JSON.parse(Buffer.from(token.split(".")[1]!, "base64url").toString("utf8"));
58
59describe(
60 "Cognito UserPool Triggers",
61 {
62 tags: [
63 "provider:aws",
64 "provider:aws:cognito",
65 "provider:aws:lambda",
66 "live",
67 ],
68 },
69 () => {
70 beforeAll(
71 Effect.gen(function* () {
72 yield* Effect.logInfo(
73 "Cognito triggers setup: destroying previous stack",
74 );
75 yield* sharedStack.destroy();
76
77 yield* Effect.logInfo("Cognito triggers setup: deploying fixture");
78 const { functionUrl } = yield* sharedStack.deploy(
79 Effect.gen(function* () {
80 return yield* CognitoTriggerFunction;
81 }).pipe(Effect.provide(CognitoTriggerFunctionLive)),
82 );
83
84 expect(functionUrl).toBeTruthy();
85 baseUrl = functionUrl!.replace(/\/+$/, "");
86 const readinessUrl = `${baseUrl}/config`;
87
88 yield* Effect.logInfo(
89 `Cognito triggers setup: probing readiness at ${readinessUrl}`,
90 );
91 yield* HttpClient.get(readinessUrl).pipe(
92 Effect.flatMap((response) =>
93 response.status === 200
94 ? Effect.succeed(response)
95 : Effect.fail(
96 new Error(`Function not ready: ${response.status}`),
97 ),
98 ),
99 Effect.tapError((error) =>
100 Effect.logWarning(
101 `Cognito triggers setup: fixture not ready yet (${String(error)})`,
102 ),
103 ),
104 Effect.retry({ schedule: readinessPolicy }),
105 );
106 }),
107 { timeout: 240_000 },
108 );
109
110 afterAll(sharedStack.destroy(), { timeout: 120_000 });
111
112 describe("UserPoolTriggerEventSource", () => {
113 test.provider(
114 "preSignUp auto-confirms sign-up; preTokenGeneration stamps a claim",
115 (_stack) =>
116 Effect.gen(function* () {
117 const config = (yield* send(
118 HttpClientRequest.get(`${baseUrl}/config`),
119 ).pipe(Effect.flatMap((r) => r.json))) as {
120 userPoolId: string;
121 clientId: string;
122 };
123
124 const response = (yield* send(
125 HttpClientRequest.post(
126 `${baseUrl}/sign-up-flow?username=trigger-user`,
127 ),
128 ).pipe(Effect.flatMap((r) => r.json))) as {
129 userConfirmed: boolean | undefined;
130 userStatus: string | undefined;
131 emailVerified: string | undefined;
132 idToken: string | undefined;
133 };
134
135 // PreSignUp auto-confirm: the sign-up response itself reports the
136 // user as confirmed, and the pool shows CONFIRMED — no
137 // confirmation code was ever entered.
138 expect(response.userConfirmed).toBe(true);
139 expect(response.userStatus).toBe("CONFIRMED");
140 expect(response.emailVerified).toBe("true");
141
142 // Password auth succeeded immediately after sign-up, proving the
143 // account was usable without confirmation.
144 expect(response.idToken).toBeTruthy();
145
146 // PreTokenGeneration: the ID token carries the claim the trigger
147 // handler stamped in, and is a real JWT issued by our pool.
148 const payload = decodeJwtPayload(response.idToken!);
149 expect(payload.alchemyTrigger).toBe("pre-token-generation");
150 expect(payload.iss).toContain(`/${config.userPoolId}`);
151 expect(payload["cognito:username"]).toBe("trigger-user");
152 expect(payload.aud).toBe(config.clientId);
153 }),
154 { timeout: 120_000 },
155 );
156 });
157 },
158);