node-bunyan-lite/test/ctor.test.js

/*
 * Copyright (c) 2012 Trent Mick. All rights reserved.
 *
 * Test type checking on creation of the Logger.
 */

var bunyan = require('../lib/bunyan'),
    Logger = bunyan;

// node-tap API
if (require.cache[__dirname + '/tap4nodeunit.js'])
    delete require.cache[__dirname + '/tap4nodeunit.js'];
var tap4nodeunit = require('./tap4nodeunit.js');
var after = tap4nodeunit.after;
var before = tap4nodeunit.before;
var test = tap4nodeunit.test;



test('ensure Logger creation options', function (t) {
  t.throws(function () { new Logger(); },
    'options (object) is required',
    'no options should throw');

  t.throws(function () { new Logger({}); },
    'options.name (string) is required',
    'no options.name should throw');

  t.doesNotThrow(function () { new Logger({name: 'foo'}); },
    'just options.name should be sufficient');

  var options = {name: 'foo', stream: process.stdout, streams: []};
  t.throws(function () { new Logger(options); },
    'cannot use "stream" and "streams"');

  // https://github.com/trentm/node-bunyan/issues/3
  options = {name: 'foo', streams: {}};
  t.throws(function () { new Logger(options); },
    'invalid options.streams: must be an array',
    '"streams" must be an array');

  options = {name: 'foo', serializers: 'a string'};
  t.throws(function () { new Logger(options); },
    'invalid options.serializers: must be an object',
    '"serializers" cannot be a string');

  options = {name: 'foo', serializers: [1, 2, 3]};
  t.throws(function () { new Logger(options); },
    'invalid options.serializers: must be an object',
    '"serializers" cannot be an array');

  t.end();
});


test('ensure Logger creation options (createLogger)', function (t) {
  t.throws(function () { bunyan.createLogger(); },
    'options (object) is required',
    'no options should throw');

  t.throws(function () { bunyan.createLogger({}); },
    'options.name (string) is required',
    'no options.name should throw');

  t.doesNotThrow(function () { bunyan.createLogger({name: 'foo'}); },
    'just options.name should be sufficient');

  var options = {name: 'foo', stream: process.stdout, streams: []};
  t.throws(function () { bunyan.createLogger(options); },
    'cannot use "stream" and "streams"');

  // https://github.com/trentm/node-bunyan/issues/3
  options = {name: 'foo', streams: {}};
  t.throws(function () { bunyan.createLogger(options); },
    'invalid options.streams: must be an array',
    '"streams" must be an array');

  options = {name: 'foo', serializers: 'a string'};
  t.throws(function () { bunyan.createLogger(options); },
    'invalid options.serializers: must be an object',
    '"serializers" cannot be a string');

  options = {name: 'foo', serializers: [1, 2, 3]};
  t.throws(function () { bunyan.createLogger(options); },
    'invalid options.serializers: must be an object',
    '"serializers" cannot be an array');

  t.end();
});


test('ensure Logger child() options', function (t) {
  var log = new Logger({name: 'foo'});

  t.doesNotThrow(function () { log.child(); },
    'no options should be fine');

  t.doesNotThrow(function () { log.child({}); },
    'empty options should be fine too');

  t.throws(function () { log.child({name: 'foo'}); },
    'invalid options.name: child cannot set logger name',
    'child cannot change name');

  var options = {stream: process.stdout, streams: []};
  t.throws(function () { log.child(options); },
    'cannot use "stream" and "streams"');

  // https://github.com/trentm/node-bunyan/issues/3
  options = {streams: {}};
  t.throws(function () { log.child(options); },
    'invalid options.streams: must be an array',
    '"streams" must be an array');

  options = {serializers: 'a string'};
  t.throws(function () { log.child(options); },
    'invalid options.serializers: must be an object',
    '"serializers" cannot be a string');

  options = {serializers: [1, 2, 3]};
  t.throws(function () { log.child(options); },
    'invalid options.serializers: must be an object',
    '"serializers" cannot be an array');

  t.end();
});