src/logging/console-settings.test.ts

import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";

vi.mock("./config.js", () => ({
  readLoggingConfig: () => undefined,
}));

vi.mock("./logger.js", () => ({
  getLogger: () => ({
    trace: () => {},
    debug: () => {},
    info: () => {},
    warn: () => {},
    error: () => {},
    fatal: () => {},
  }),
}));

let loadConfigCalls = 0;
vi.mock("node:module", async () => {
  const actual = await vi.importActual<typeof import("node:module")>("node:module");
  return Object.assign({}, actual, {
    createRequire: (url: string | URL) => {
      const realRequire = actual.createRequire(url);
      return (specifier: string) => {
        if (specifier.endsWith("config.js")) {
          return {
            loadConfig: () => {
              loadConfigCalls += 1;
              if (loadConfigCalls > 5) {
                return {};
              }
              console.error("config load failed");
              return {};
            },
          };
        }
        return realRequire(specifier);
      };
    },
  });
});
type ConsoleSnapshot = {
  log: typeof console.log;
  info: typeof console.info;
  warn: typeof console.warn;
  error: typeof console.error;
  debug: typeof console.debug;
  trace: typeof console.trace;
};

let originalIsTty: boolean | undefined;
let snapshot: ConsoleSnapshot;

beforeEach(() => {
  loadConfigCalls = 0;
  vi.resetModules();
  snapshot = {
    log: console.log,
    info: console.info,
    warn: console.warn,
    error: console.error,
    debug: console.debug,
    trace: console.trace,
  };
  originalIsTty = process.stdout.isTTY;
  Object.defineProperty(process.stdout, "isTTY", { value: false, configurable: true });
});

afterEach(() => {
  console.log = snapshot.log;
  console.info = snapshot.info;
  console.warn = snapshot.warn;
  console.error = snapshot.error;
  console.debug = snapshot.debug;
  console.trace = snapshot.trace;
  Object.defineProperty(process.stdout, "isTTY", { value: originalIsTty, configurable: true });
  vi.restoreAllMocks();
});

async function loadLogging() {
  const logging = await import("../logging.js");
  const state = await import("./state.js");
  state.loggingState.cachedConsoleSettings = null;
  return { logging, state };
}

describe("getConsoleSettings", () => {
  it("does not recurse when loadConfig logs during resolution", async () => {
    const { logging } = await loadLogging();
    logging.setConsoleTimestampPrefix(true);
    logging.enableConsoleCapture();
    const { getConsoleSettings } = logging;
    getConsoleSettings();
    expect(loadConfigCalls).toBe(1);
  });

  it("skips config fallback during re-entrant resolution", async () => {
    const { logging, state } = await loadLogging();
    state.loggingState.resolvingConsoleSettings = true;
    logging.setConsoleTimestampPrefix(true);
    logging.enableConsoleCapture();
    logging.getConsoleSettings();
    expect(loadConfigCalls).toBe(0);
    state.loggingState.resolvingConsoleSettings = false;
  });
});