log4js-node/test/tap/consoleAppender-test.js

const { test } = require("tap");
const sandbox = require("@log4js-node/sandboxed-module");
const consoleAppender = require("../../lib/appenders/console");

test("log4js console appender", batch => {
  batch.test("should export a configure function", t => {
    t.type(consoleAppender.configure, "function");
    t.end();
  });

  batch.test("should use default layout if none specified", t => {
    const messages = [];
    const fakeConsole = {
      log(msg) {
        messages.push(msg);
      }
    };
    const log4js = sandbox.require("../../lib/log4js", {
      globals: {
        console: fakeConsole
      }
    });
    log4js.configure({
      appenders: { console: { type: "console" } },
      categories: { default: { appenders: ["console"], level: "DEBUG" } }
    });

    log4js.getLogger().info("blah");

    t.match(messages[0], /.*default.*blah/);
    t.end();
  });

  batch.test("should output to console", t => {
    const messages = [];
    const fakeConsole = {
      log(msg) {
        messages.push(msg);
      }
    };
    const log4js = sandbox.require("../../lib/log4js", {
      globals: {
        console: fakeConsole
      }
    });
    log4js.configure({
      appenders: {
        console: { type: "console", layout: { type: "messagePassThrough" } }
      },
      categories: { default: { appenders: ["console"], level: "DEBUG" } }
    });

    log4js.getLogger().info("blah");

    t.equal(messages[0], "blah");
    t.end();
  });

  batch.end();
});