import { describe, it, expect } from "vitest";
import { childLogger, rootLogger } from "../../src/runtime/logger";
import pino from "pino";

describe("childLogger", () => {
  it("returns a pino logger instance", () => {
    const logger = childLogger("runner");
    expect(logger).toBeDefined();
    expect(typeof logger.info).toBe("function");
    expect(typeof logger.error).toBe("function");
  });

  it("sets component binding on child logger", () => {
    const logger = childLogger("runner");
    // pino child loggers expose their bindings via .bindings()
    const bindings = (logger as pino.Logger).bindings();
    expect(bindings.component).toBe("runner");
  });

  it("rootLogger is a pino logger", () => {
    expect(typeof rootLogger.info).toBe("function");
    expect(typeof rootLogger.child).toBe("function");
  });

  it("different component names produce distinct bindings", () => {
    const runnerLog = childLogger("runner");
    const botLog = childLogger("bot");
    expect(runnerLog.bindings().component).toBe("runner");
    expect(botLog.bindings().component).toBe("bot");
  });
});