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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import { assert, assertEquals, assertThrows } from "../assert/mod.ts";import * as log from "./mod.ts";import { TestHandler } from "./_test_handler.ts";
let logger: log.Logger | null = null;try {  // Need to initialize it here  // otherwise it will be already initialized on Deno.test  logger = log.getLogger();} catch {  // Pass}
Deno.test("getLogger() initializes logger", function () {  assert(logger instanceof log.Logger);});
Deno.test("getLogger()", async function () {  const handler = new TestHandler("DEBUG");
  await log.setup({    handlers: {      default: handler,    },    loggers: {      default: {        level: "DEBUG",        handlers: ["default"],      },    },  });
  const logger = log.getLogger();
  assertEquals(logger.levelName, "DEBUG");  assertEquals(logger.handlers, [handler]);});
Deno.test("getLogger() handles name", async function () {  const fooHandler = new TestHandler("DEBUG");
  await log.setup({    handlers: {      foo: fooHandler,    },    loggers: {      bar: {        level: "INFO",        handlers: ["foo"],      },    },  });
  const logger = log.getLogger("bar");
  assertEquals(logger.levelName, "INFO");  assertEquals(logger.handlers, [fooHandler]);});
Deno.test("getLogger() habndles unknown", async function () {  await log.setup({    handlers: {},    loggers: {},  });
  const logger = log.getLogger("nonexistent");
  assertEquals(logger.levelName, "NOTSET");  assertEquals(logger.handlers, []);});
Deno.test("getLogger() handles invalid level", function () {  assertThrows(() => log.getLevelByName("FAKE_LOG_LEVEL" as log.LevelName));  assertThrows(() => log.getLevelName(5000 as log.LogLevel));});