logger_test.rb

require 'test_helper'

describe Lotus::Logger do

  before do
    #clear defined class
    Object.send(:remove_const, :TestLogger) if Object.constants.include?(:TestLogger)
  end

  it 'like std logger, sets log level to info by default' do
    class TestLogger < Lotus::Logger; end
    TestLogger.new.info?.must_equal true
  end

  it 'always use STDOUT' do
    output =
      stub_stdout_constant do
        class TestLogger < Lotus::Logger; end
        logger = TestLogger.new
        logger.info('foo')
      end
    output.must_match /foo/
  end

  it 'has app_tag when log' do
    output =
      stub_stdout_constant do
        module App; class TestLogger < Lotus::Logger; end; end
        logger = App::TestLogger.new
        logger.info('foo')
      end
    output.must_match /App/
  end

  it 'has default app tag when not in any namespace' do
    class TestLogger < Lotus::Logger; end
    TestLogger.new.send(:app_tag).must_equal 'Shared'
  end

  it 'infers apptag from namespace' do
    module App2
      class TestLogger < Lotus::Logger;end
      class Bar
        def hoge
          TestLogger.new.send(:app_tag).must_equal 'App2'
        end
      end
    end
    App2::Bar.new.hoge
  end

  it 'uses custom app_tag from override class' do
    class TestLogger < Lotus::Logger; def app_tag; 'bar'; end; end
    output =
      stub_stdout_constant do
        TestLogger.new.info('')
      end
    output.must_match /bar/
  end

  it 'has format "#{Severity}, [%Y-%m-%dT%H:%M:%S.%6N #{Pid}] #{Severity} -- [#{app_tag}] : #{message}\n"' do
    format = "%Y-%m-%dT%H:%M:%S.%6N "
    stub_time_now do
      strtime = Time.now.strftime(format)
      output =
        stub_stdout_constant do
          class TestLogger < Lotus::Logger;end
          TestLogger.new.info('foo')
        end
      output.must_equal "I, [1988-09-01T00:00:00.000000 ##{Process.pid}]  INFO -- [Shared] : foo\n"
    end
  end
end