log4js-node/test/tap/default-settings-test.js

const { test } = require("tap");
const sandbox = require("@log4js-node/sandboxed-module");

test("default settings", t => {
  const output = [];

  const log4js = sandbox.require("../../lib/log4js", {
    requires: {
      "./appenders/stdout": {
        name: "stdout",
        appender() {
          return function(evt) {
            output.push(evt);
          };
        },
        configure() {
          return this.appender();
        }
      }
    }
  });

  const logger = log4js.getLogger("default-settings");
  logger.info("This should not be logged yet.");

  t.plan(3);
  t.equal(
    output.length,
    0,
    "Nothing should be logged until configure is called."
  );

  log4js.configure({
    appenders: { stdout: { type: "stdout" } },
    categories: { default: { appenders: ["stdout"], level: "debug" } }
  });
  logger.info("This should go to stdout.");

  t.equal(output.length, 1, "It should log to stdout.");
  t.equal(
    output[0].data[0],
    "This should go to stdout.",
    "It should log the message."
  );
  t.end();
});