deno.land / std@0.166.0 / log / mod_test.ts

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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); },});
std
Deno standard library
GitHub Repositorydenoland/deno_std
GitHub Stars
2448

Version Info

Tagged at
2 months ago