# frozen_string_literal: true
require_relative 'helper'
require 'sidekiq/monitor'

def capture_stdout
  $stdout = StringIO.new
  yield
  $stdout.string.chomp
ensure
  $stdout = STDOUT
end

def output(section = 'all')
  capture_stdout do
    Sidekiq::Monitor::Status.new.display(section)
  end
end

describe Sidekiq::Monitor do
  before do
    Sidekiq.redis {|c| c.flushdb}
  end

  describe 'status' do
    describe 'version' do
      it 'displays the current Sidekiq version' do
        assert_includes output, "Sidekiq #{Sidekiq::VERSION}"
      end

      it 'displays the current time' do
        Time.stub(:now, Time.at(0)) do
          assert_includes output, Time.at(0).to_s
        end
      end
    end

    describe 'overview' do
      it 'has a heading' do
        assert_includes output, '---- Overview ----'
      end

      it 'displays the correct output' do
        mock_stats = OpenStruct.new(
          processed: 420710,
          failed: 12,
          workers_size: 34,
          enqueued: 56,
          retry_size: 78,
          scheduled_size: 90,
          dead_size: 666
        )
        Sidekiq::Stats.stub(:new, mock_stats) do
          assert_includes output, 'Processed: 420,710'
          assert_includes output, 'Failed: 12'
          assert_includes output, 'Busy: 34'
          assert_includes output, 'Enqueued: 56'
          assert_includes output, 'Retries: 78'
          assert_includes output, 'Scheduled: 90'
          assert_includes output, 'Dead: 666'
        end
      end
    end

    describe 'processes' do
      it 'has a heading' do
        assert_includes output, '---- Processes (0) ----'
      end

      it 'displays the correct output' do
        mock_processes = [{
          'identity' => 'foobar',
          'tag' => 'baz',
          'started_at' => Time.now,
          'concurrency' => 5,
          'busy' => 2,
          'queues' => %w[low medium high]
        }]
        Sidekiq::ProcessSet.stub(:new, mock_processes) do
          assert_includes output, 'foobar [baz]'
          assert_includes output, "Started: #{mock_processes.first['started_at']} (just now)"
          assert_includes output, 'Threads: 5 (2 busy)'
          assert_includes output, 'Queues: high, low, medium'
        end
      end
    end

    describe 'queues' do
      it 'has a heading' do
        assert_includes output, '---- Queues (0) ----'
      end

      it 'displays the correct output' do
        mock_queues = [
          OpenStruct.new(name: 'foobar', size: 12, latency: 12.3456),
          OpenStruct.new(name: 'a_long_queue_name', size: 234, latency: 567.89999)
        ]
        Sidekiq::Queue.stub(:all, mock_queues) do
          assert_includes output, 'NAME                 SIZE  LATENCY'
          assert_includes output, 'foobar                 12    12.35'
          assert_includes output, 'a_long_queue_name     234   567.90'
        end
      end
    end
  end
end