require_relative 'test_helper'
require 'stringio'

# Unit Test for SemanticLogger::Appender::File
#
class AppenderFileTest < Minitest::Test
  describe SemanticLogger::Appender::File do
    before do
      SemanticLogger.default_level = :trace
      @time                        = Time.new
      @io                          = StringIO.new
      @appender                    = SemanticLogger::Appender::File.new(@io)
      @hash                        = {session_id: 'HSSKLEU@JDK767', tracking_number: 12345}
      @hash_str                    = @hash.inspect.sub("{", "\\{").sub("}", "\\}")
      @thread_name                 = Thread.current.name
    end

    describe "format logs into text form" do
      it "handle no message or payload" do
        @appender.debug
        assert_match /\d+-\d+-\d+ \d+:\d+:\d+.\d+ D \[\d+:#{@thread_name}\] SemanticLogger::Appender::File -- \n/, @io.string
      end

      it "handle message" do
        @appender.debug 'hello world'
        assert_match /\d+-\d+-\d+ \d+:\d+:\d+.\d+ D \[\d+:#{@thread_name}\] SemanticLogger::Appender::File -- hello world\n/, @io.string
      end

      it "handle message and payload" do
        @appender.debug 'hello world', @hash
        assert_match /\d+-\d+-\d+ \d+:\d+:\d+.\d+ D \[\d+:#{@thread_name}\] SemanticLogger::Appender::File -- hello world -- #{@hash_str}\n/, @io.string
      end

      it "handle message, payload, and exception" do
        @appender.debug 'hello world', @hash, StandardError.new("StandardError")
        assert_match /\d+-\d+-\d+ \d+:\d+:\d+.\d+ D \[\d+:#{@thread_name}\] SemanticLogger::Appender::File -- hello world -- #{@hash_str} -- Exception: StandardError: StandardError\n\n/, @io.string
      end

      it "handle exception only" do
        @appender.debug StandardError.new("StandardError")
        assert_match /\d+-\d+-\d+ \d+:\d+:\d+.\d+ D \[\d+:#{@thread_name}\] SemanticLogger::Appender::File -- #<StandardError: StandardError> -- Exception: StandardError: StandardError\n\n/, @io.string
      end
    end

    describe "for each log level" do
      # Ensure that any log level can be logged
      SemanticLogger::LEVELS.each do |level|
        it "log #{level} information" do
          @appender.send(level, 'hello world', @hash)
          assert_match /\d+-\d+-\d+ \d+:\d+:\d+.\d+ \w \[\d+:#{@thread_name}\] SemanticLogger::Appender::File -- hello world -- #{@hash_str}\n/, @io.string
        end
      end
    end

    describe "custom formatter" do
      before do
        @appender = SemanticLogger::Appender::File.new(@io) do |log|
          tags = log.tags.collect { |tag| "[#{tag}]" }.join(" ") + " " if log.tags && (log.tags.size > 0)

          message = log.message.to_s
          message << " -- " << log.payload.inspect if log.payload
          message << " -- " << "#{log.exception.class}: #{log.exception.message}\n#{(log.exception.backtrace || []).join("\n")}" if log.exception

          duration_str = log.duration ? " (#{'%.1f' % log.duration}ms)" : ''

          "#{SemanticLogger::Appender::Base.formatted_time(log.time)} #{log.level.to_s.upcase} [#{$$}:#{log.thread_name}] #{tags}#{log.name} -- #{message}#{duration_str}"
        end
      end

      it "format using formatter" do
        @appender.debug
        assert_match /\d+-\d+-\d+ \d+:\d+:\d+.\d+ DEBUG \[\d+:#{@thread_name}\] SemanticLogger::Appender::File -- \n/, @io.string
      end
    end

  end
end