TicketLab_MCP/src/telemetry.test.ts

import assert from "node:assert/strict";
import test from "node:test";
import { SeverityNumber, startTelemetry } from "./telemetry.js";

test("startTelemetry emits and shuts down without throwing", async () => {
  process.env.OTEL_EXPORTER_OTLP_ENDPOINT = "http://127.0.0.1:9";
  process.env.OTEL_SERVICE_NAME = "ticketlab-test";

  const telemetry = startTelemetry("ticketlab-test");
  const counter = telemetry.meter.createCounter("ticketlab_test_runs_total");

  await telemetry.tracer.startActiveSpan("ticketlab.test", async (span) => {
    counter.add(1, { component: "test" });
    telemetry.logger.emit({
      severityNumber: SeverityNumber.INFO,
      severityText: "INFO",
      body: "telemetry self-check",
      attributes: { "ticketlab.event": "test" },
    });
    span.end();
  });

  await telemetry.shutdown();
  assert.equal(typeof SeverityNumber.INFO, "number");
});