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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import { assertEquals } from "../assert/assert_equals.ts";import * as log from "./mod.ts";import { TestHandler } from "./_test_handler.ts";
Deno.test("setup() handles default handlers", async function () {  const loggers: {    [key: string]: (msg: string, ...args: unknown[]) => void;  } = {    DEBUG: log.debug,    INFO: log.info,    WARN: log.warn,    ERROR: log.error,    CRITICAL: log.critical,  };
  for (const levelName of log.LogLevelNames) {    if (levelName === "NOTSET") {      continue;    }
    const logger = loggers[levelName]!;    const handler = new TestHandler(levelName);
    await log.setup({      handlers: {        default: handler,      },      loggers: {        default: {          level: levelName as log.LevelName,          handlers: ["default"],        },      },    });
    logger("foo");    logger("bar", 1, 2);
    assertEquals(handler.messages, [`${levelName} foo`, `${levelName} bar`]);  }});
Deno.test({  name: "setup() logging config works as expected with logger names",  async fn() {    const consoleHandler = new TestHandler("DEBUG");    const anotherConsoleHandler = new TestHandler("DEBUG", {      formatter: ({ loggerName, levelName, msg }) =>        `[${loggerName}] ${levelName} ${msg}`,    });    await log.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"],        },      },    });    log.getLogger().debug("hello");    log.getLogger("tasks").error("world");    assertEquals(consoleHandler.messages[0], "DEBUG hello");    assertEquals(anotherConsoleHandler.messages[0], "[tasks] ERROR world");  },});
Deno.test({  name: "setup() loggers have level and levelName to get and set loglevels",  async fn() {    const testHandler = new TestHandler("DEBUG");    await log.setup({      handlers: {        test: testHandler,      },
      loggers: {        // configure default logger available via short-hand methods above        default: {          level: "DEBUG",          handlers: ["test"],        },      },    });    const logger: log.Logger = log.getLogger();    assertEquals(logger.levelName, "DEBUG");    assertEquals(logger.level, log.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 = log.LogLevels.WARN;    assertEquals(logger.levelName, "WARN");    assertEquals(logger.level, log.LogLevels.WARN);
    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: log.LevelName = "CRITICAL";    logger.levelName = setLevelName;    assertEquals(logger.levelName, "CRITICAL");    assertEquals(logger.level, log.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: "setup() checks if logger has mutable handlers",  async fn() {    const testHandlerA = new TestHandler("DEBUG");    const testHandlerB = new TestHandler("DEBUG");    await log.setup({      handlers: {        testA: testHandlerA,        testB: testHandlerB,      },
      loggers: {        default: {          level: "DEBUG",          handlers: ["testA"],        },      },    });    const logger: log.Logger = log.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);  },});
Deno.test({  name: "setup() checks loggerName of loggers",  async fn() {    const testHandler = new TestHandler("DEBUG");    await log.setup({      handlers: {        test: testHandler,      },
      loggers: {        namedA: {          level: "DEBUG",          handlers: ["test"],        },        namedB: {          level: "DEBUG",          handlers: ["test"],        },      },    });
    assertEquals(log.getLogger("namedA").loggerName, "namedA");    assertEquals(log.getLogger("namedB").loggerName, "namedB");    assertEquals(log.getLogger().loggerName, "default");    assertEquals(log.getLogger("nonsetupname").loggerName, "nonsetupname");  },});