nano-service/tests/service.test.ts

import { z } from "zod";
import NatsAdaptor from "../src/adaptors/nats.ts";
import Service from "../src/service.ts";
import { assertEquals, assertRejects, assertThrows } from "std/assert/mod.ts";
import { afterEach, beforeEach, it } from "std/testing/bdd.ts";
import { RequestError } from "../src/error.ts";

let srv!: Service;

const natsServer = Deno.env.get("NATS_HOST") || "127.0.0.1:4222";
const serviceName = "test-service";
const adaptorName = "nats";
const subject = "test";

beforeEach(() => {
  srv = new Service(serviceName);
});

afterEach(async () => {
  await srv.stop();
});

it("request success", {
  sanitizeExit: false,
  sanitizeOps: false,
  sanitizeResources: false,
}, async () => {
  const dataExpected = "hello success";
  const statusCodeExpected = 200;

  srv.addAdaptor(adaptorName, new NatsAdaptor({ servers: [natsServer] }));
  srv.subscribe(adaptorName, subject, async (msg) => {
    return { data: msg.data, statusCode: statusCodeExpected };
  }, z.string());

  await srv.listen();

  const res = await srv.request(adaptorName, {
    service: serviceName,
    subject: subject,
    data: dataExpected,
  }, z.string());

  assertEquals(res.data, dataExpected);
  assertEquals(res.statusCode, statusCodeExpected);
});

it("request error", {
  sanitizeExit: false,
  sanitizeOps: false,
  sanitizeResources: false,
}, async () => {
  const dataExpected = "hello error";
  const statusCodeExpected = 500;

  srv.addAdaptor(adaptorName, new NatsAdaptor({ servers: [natsServer] }));
  srv.subscribe(adaptorName, subject, async (msg) => {
    throw new RequestError("request error", 500);
  }, z.string());

  await srv.listen();
  assertRejects(() => {
    return srv.request(adaptorName, {
      service: serviceName,
      subject: subject,
      data: dataExpected,
    }, z.string());
  });
});

it("request adaptor not found", {
  sanitizeExit: false,
  sanitizeOps: false,
  sanitizeResources: false,
}, async () => {
  const dataExpected = "hello success";
  const statusCodeExpected = 200;

  srv.addAdaptor(adaptorName, new NatsAdaptor({ servers: [natsServer] }));
  srv.subscribe(adaptorName, subject, async (msg) => {
    return { data: msg.data, statusCode: statusCodeExpected };
  });

  await srv.listen();
  assertRejects(() => {
    return srv.request("bad adaptor", {
      service: serviceName,
      subject: subject,
      data: dataExpected,
    });
  });
});