t3-code-android-nightly/.repos/alchemy-effect/packages/alchemy/test/AWS/Schemas/Bindings.test.ts

import * as AWS from "@/AWS";
import * as Core from "@/Test/Core";
import * as Test from "@/Test/Alchemy";
import * as eventbridge from "@distilled.cloud/aws/eventbridge";
import { describe, expect } from "alchemy-test";
import * as Data from "effect/Data";
import * as Effect from "effect/Effect";
import * as Schedule from "effect/Schedule";
import * as HttpClient from "effect/http/HttpClient";
import * as HttpClientRequest from "effect/http/HttpClientRequest";
import SchemasTestFunctionLive, { SchemasTestFunction } from "./handler";

const testOptions = { providers: AWS.providers() };
const { test, beforeAll, afterAll } = Test.make(testOptions);
const sharedStack = Core.scratchStack(testOptions, "SchemasBindings");

// Lambda function URL cold-start (DNS, IAM propagation, init) can take well
// over 60s on a fresh deploy.
const readinessPolicy = Schedule.max([
  Schedule.fixed("2 seconds"),
  Schedule.recurs(75),
]);

let baseUrl: string;
let functionArn: string;

class TransientUpstream extends Data.TaggedError("TransientUpstream")<{
  readonly status: number;
  readonly body: string;
}> {}

// The shared Lambda fixture occasionally answers a transient 5xx under load
// (cold re-init, IAM propagation on the freshly attached policy that the
// handler's `Effect.orDie` surfaces as a 500). Retry only 5xx; a genuine
// 4xx/assertion failure surfaces immediately.
const send = (request: HttpClientRequest.HttpClientRequest) =>
  HttpClient.execute(request).pipe(
    Effect.flatMap((response) =>
      response.status >= 500
        ? response.text.pipe(
            Effect.flatMap((body) =>
              Effect.fail(
                new TransientUpstream({ status: response.status, body }),
              ),
            ),
          )
        : Effect.succeed(response),
    ),
    Effect.retry({
      while: (e) => e._tag === "TransientUpstream",
      schedule: Schedule.max([
        Schedule.exponential("500 millis"),
        Schedule.recurs(6),
      ]),
    }),
  );

const getJson = (path: string) =>
  send(HttpClientRequest.get(`${baseUrl}${path}`)).pipe(
    Effect.flatMap((r) => r.json),
  );

const postJson = (path: string) =>
  send(HttpClientRequest.post(`${baseUrl}${path}`)).pipe(
    Effect.flatMap((r) => r.json),
  );

describe.sequential(
  "Schemas Bindings",
  {
    tags: [
      "provider:aws",
      "provider:aws:eventbridge",
      "provider:aws:lambda",
      "provider:aws:schemas",
      "live",
    ],
  },
  () => {
    beforeAll(
      Effect.gen(function* () {
        yield* Effect.logInfo(
          "Schemas test setup: destroying previous resources",
        );
        yield* sharedStack.destroy();

        yield* Effect.logInfo("Schemas test setup: deploying fixture");
        const attrs = yield* sharedStack.deploy(
          Effect.gen(function* () {
            return yield* SchemasTestFunction;
          }).pipe(Effect.provide(SchemasTestFunctionLive)),
        );

        expect(attrs.functionUrl).toBeTruthy();
        baseUrl = attrs.functionUrl!.replace(/\/+$/, "");
        functionArn = attrs.functionArn;

        const readinessUrl = `${baseUrl}/bindings`;
        yield* Effect.logInfo(
          `Schemas test setup: probing readiness at ${readinessUrl}`,
        );
        yield* HttpClient.get(readinessUrl).pipe(
          Effect.flatMap((response) =>
            response.status === 200
              ? Effect.succeed(response)
              : Effect.fail(
                  new Error(`Function not ready: ${response.status}`),
                ),
          ),
          Effect.tapError((error) =>
            Effect.logWarning(
              `Schemas test setup: fixture not ready yet (${String(error)})`,
            ),
          ),
          Effect.retry({ schedule: readinessPolicy }),
        );
      }),
      { timeout: 240_000 },
    );

    afterAll.skipIf(!!process.env.NO_DESTROY)(sharedStack.destroy(), {
      timeout: 120_000,
    });

    describe("binding registration", () => {
      test.provider(
        "all ten capabilities initialize in the runtime",
        (_stack) =>
          Effect.gen(function* () {
            const response = (yield* getJson("/bindings")) as {
              bound: string[];
            };
            expect(response.bound).toHaveLength(10);
          }),
      );
    });

    describe("DescribeSchema", () => {
      test.provider(
        "reads the bound schema's document (injected registry + schema names)",
        (_stack) =>
          Effect.gen(function* () {
            const response = (yield* getJson("/schema")) as {
              name: string;
              type: string;
              version: string;
              hasContent: boolean;
            };
            expect(response.name).toBeTruthy();
            expect(response.type).toBe("OpenApi3");
            expect(response.version).toBe("1");
            expect(response.hasContent).toBe(true);
          }),
      );
    });

    describe("ExportSchema", () => {
      test.provider(
        "surfaces the typed ForbiddenException for custom-registry schemas",
        (_stack) =>
          Effect.gen(function* () {
            // AWS only allows exporting discovered / AWS-managed schemas. The
            // call reaching the API and failing with the typed tag proves the
            // binding + IAM wiring end-to-end.
            const response = (yield* getJson("/export")) as {
              outcome: string;
              message?: string;
            };
            expect(response.outcome).toBe("forbidden");
            expect(response.message).toContain("export");
          }),
      );
    });

    describe("ListSchemaVersions", () => {
      test.provider("lists the schema's single published version", (_stack) =>
        Effect.gen(function* () {
          const response = (yield* getJson("/versions")) as {
            versions: string[];
          };
          expect(response.versions).toContain("1");
        }),
      );
    });

    describe("SearchSchemas", () => {
      test.provider(
        "finds the schema by keyword in the bound registry",
        (_stack) =>
          Effect.gen(function* () {
            // Search indexing lags schema creation by a few seconds.
            const response = yield* getJson("/search").pipe(
              Effect.map((r) => r as { names: string[] }),
              Effect.repeat({
                schedule: Schedule.spaced("3 seconds"),
                until: (r): boolean => (r.names ?? []).length > 0,
                times: 15,
              }),
            );
            expect(response.names.length).toBeGreaterThanOrEqual(1);
          }),
        { timeout: 90_000 },
      );
    });

    describe("GetDiscoveredSchema", () => {
      test.provider("infers a schema from a sample event envelope", (_stack) =>
        Effect.gen(function* () {
          const response = (yield* postJson("/discover")) as {
            hasContent: boolean;
          };
          expect(response.hasContent).toBe(true);
        }),
      );
    });

    describe("PutCodeBinding / DescribeCodeBinding / GetCodeBindingSource", () => {
      test.provider(
        "generates a code-binding package and downloads it",
        (_stack) =>
          Effect.gen(function* () {
            // Kick off async generation.
            const put = (yield* postJson("/codebinding")) as { status: string };
            expect(["CREATE_IN_PROGRESS", "CREATE_COMPLETE"]).toContain(
              put.status,
            );

            // Poll until generation completes (usually well under 30s).
            const status = yield* getJson("/codebinding").pipe(
              Effect.map((r) => (r as { status: string }).status),
              Effect.repeat({
                schedule: Schedule.spaced("3 seconds"),
                until: (s): boolean => s === "CREATE_COMPLETE",
                times: 20,
              }),
            );
            expect(status).toBe("CREATE_COMPLETE");

            // The generated zip streams back as Body.
            const source = (yield* getJson("/codebinding/source")) as {
              bytes: number;
            };
            expect(source.bytes).toBeGreaterThan(0);
          }),
        { timeout: 120_000 },
      );
    });

    describe("StopDiscoverer / StartDiscoverer", () => {
      test.provider(
        "pauses and resumes the bound discoverer (injected discoverer id)",
        (_stack) =>
          Effect.gen(function* () {
            const stopped = (yield* postJson("/discoverer/stop")) as {
              state: string;
            };
            expect(stopped.state).toBe("STOPPED");

            const started = (yield* postJson("/discoverer/start")) as {
              state: string;
            };
            expect(started.state).toBe("STARTED");
          }),
      );
    });

    describe("consumeSchemaEvents", () => {
      test.provider(
        "the deploy created an EventBridge rule targeting the function",
        (_stack) =>
          Effect.gen(function* () {
            // Out-of-band via distilled: the fixture's consumeSchemaEvents
            // must have materialized as a rule on the default bus with the
            // Lambda as target.
            const { RuleNames } = yield* eventbridge.listRuleNamesByTarget({
              TargetArn: functionArn,
            });
            expect((RuleNames ?? []).length).toBeGreaterThanOrEqual(1);
          }),
      );
    });
  },
);