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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.import { assert, assertEquals } from "../testing/asserts.ts";import {  critical,  debug,  error,  getLogger,  info,  LevelName,  Logger,  LogLevels,  setup,  warning,} from "./mod.ts";import { BaseHandler } from "./handlers.ts";
class TestHandler extends BaseHandler {  public messages: string[] = [];
  public override log(str: string) {    this.messages.push(str);  }}
let logger: Logger | null = null;try {  // Need to initialize it here  // otherwise it will be already initialized on Deno.test  logger = getLogger();} catch {  // Pass}
Deno.test("logger is initialized", function () {  assert(logger instanceof Logger);});
Deno.test("default loggers work as expected", function () {  const sym = Symbol("a");  const debugData: string = debug("foo");  const debugResolver: string | undefined = debug(() => "foo");  const infoData: number = info(456, 1, 2, 3);  const infoResolver: boolean | undefined = info(() => true);  const warningData: symbol = warning(sym);  const warningResolver: null | undefined = warning(() => null);  const errorData: undefined = error(undefined, 1, 2, 3);  const errorResolver: bigint | undefined = error(() => 5n);  const criticalData: string = critical("foo");  const criticalResolver: string | undefined = critical(() => "bar");  assertEquals(debugData, "foo");  assertEquals(debugResolver, undefined);  assertEquals(infoData, 456);  assertEquals(infoResolver, true);  assertEquals(warningData, sym);  assertEquals(warningResolver, null);  assertEquals(errorData, undefined);  assertEquals(errorResolver, 5n);  assertEquals(criticalData, "foo");  assertEquals(criticalResolver, "bar");});
Deno.test({  name: "Logging config works as expected with logger names",  async fn() {    const consoleHandler = new TestHandler("DEBUG");    const anotherConsoleHandler = new TestHandler("DEBUG", {      formatter: "[{loggerName}] {levelName} {msg}",    });    await setup({      handlers: {        console: consoleHandler,        anotherConsole: anotherConsoleHandler,      },
      loggers: {        // configure default logger available via short-hand methods above        default: {          level: "DEBUG",          handlers: ["console"],        },
        tasks: {          level: "ERROR",          handlers: ["anotherConsole"],        },      },    });    getLogger().debug("hello");    getLogger("tasks").error("world");    assertEquals(consoleHandler.messages[0], "DEBUG hello");    assertEquals(anotherConsoleHandler.messages[0], "[tasks] ERROR world");  },});
Deno.test({  name: "Loggers have level and levelName to get/set loglevels",  async fn() {    const testHandler = new TestHandler("DEBUG");    await setup({      handlers: {        test: testHandler,      },
      loggers: {        // configure default logger available via short-hand methods above        default: {          level: "DEBUG",          handlers: ["test"],        },      },    });    const logger: Logger = getLogger();    assertEquals(logger.levelName, "DEBUG");    assertEquals(logger.level, LogLevels.DEBUG);
    logger.debug("debug");    logger.error("error");    logger.critical("critical");    assertEquals(testHandler.messages.length, 3);    assertEquals(testHandler.messages[0], "DEBUG debug");    assertEquals(testHandler.messages[1], "ERROR error");    assertEquals(testHandler.messages[2], "CRITICAL critical");
    testHandler.messages = [];    logger.level = LogLevels.WARNING;    assertEquals(logger.levelName, "WARNING");    assertEquals(logger.level, LogLevels.WARNING);
    logger.debug("debug2");    logger.error("error2");    logger.critical("critical2");    assertEquals(testHandler.messages.length, 2);    assertEquals(testHandler.messages[0], "ERROR error2");    assertEquals(testHandler.messages[1], "CRITICAL critical2");
    testHandler.messages = [];    const setLevelName: LevelName = "CRITICAL";    logger.levelName = setLevelName;    assertEquals(logger.levelName, "CRITICAL");    assertEquals(logger.level, LogLevels.CRITICAL);
    logger.debug("debug3");    logger.error("error3");    logger.critical("critical3");    assertEquals(testHandler.messages.length, 1);    assertEquals(testHandler.messages[0], "CRITICAL critical3");  },});
Deno.test({  name: "Loggers have loggerName to get logger name",  async fn() {    const testHandler = new TestHandler("DEBUG");    await setup({      handlers: {        test: testHandler,      },
      loggers: {        namedA: {          level: "DEBUG",          handlers: ["test"],        },        namedB: {          level: "DEBUG",          handlers: ["test"],        },      },    });
    assertEquals(getLogger("namedA").loggerName, "namedA");    assertEquals(getLogger("namedB").loggerName, "namedB");    assertEquals(getLogger().loggerName, "default");    assertEquals(getLogger("nonsetupname").loggerName, "nonsetupname");  },});
Deno.test({  name: "Logger has mutable handlers",  async fn() {    const testHandlerA = new TestHandler("DEBUG");    const testHandlerB = new TestHandler("DEBUG");    await setup({      handlers: {        testA: testHandlerA,        testB: testHandlerB,      },
      loggers: {        default: {          level: "DEBUG",          handlers: ["testA"],        },      },    });    const logger: Logger = getLogger();    logger.info("msg1");    assertEquals(testHandlerA.messages.length, 1);    assertEquals(testHandlerA.messages[0], "INFO msg1");    assertEquals(testHandlerB.messages.length, 0);
    logger.handlers = [testHandlerA, testHandlerB];
    logger.info("msg2");    assertEquals(testHandlerA.messages.length, 2);    assertEquals(testHandlerA.messages[1], "INFO msg2");    assertEquals(testHandlerB.messages.length, 1);    assertEquals(testHandlerB.messages[0], "INFO msg2");
    logger.handlers = [testHandlerB];
    logger.info("msg3");    assertEquals(testHandlerA.messages.length, 2);    assertEquals(testHandlerB.messages.length, 2);    assertEquals(testHandlerB.messages[1], "INFO msg3");
    logger.handlers = [];    logger.info("msg4");    assertEquals(testHandlerA.messages.length, 2);    assertEquals(testHandlerB.messages.length, 2);  },});