import { describe, it, expect } from "vitest";
import { NoopMetrics } from "./noop-metrics";

describe("NoopMetrics", () => {
  it("counter() returns undefined without throwing", () => {
    const metrics = new NoopMetrics();
    expect(() => metrics.counter("my.counter")).not.toThrow();
    expect(() => metrics.counter("my.counter", 5)).not.toThrow();
    expect(() =>
      metrics.counter("my.counter", 1, { feature: "auth", success: true }),
    ).not.toThrow();
  });

  it("histogram() returns undefined without throwing", () => {
    const metrics = new NoopMetrics();
    expect(() => metrics.histogram("my.latency", 42)).not.toThrow();
    expect(() =>
      metrics.histogram("my.latency", 100, { route: "/api/me" }),
    ).not.toThrow();
  });

  it("gauge() returns undefined without throwing", () => {
    const metrics = new NoopMetrics();
    expect(() => metrics.gauge("queue.depth", 7)).not.toThrow();
    expect(() =>
      metrics.gauge("queue.depth", 3, { queue: "emails" }),
    ).not.toThrow();
  });
});