Rakefile

require "bundler/setup"
require "tempfile"

def server(extra=nil)
  command = File.readlines("Procfile").first.strip.
    sub('web: ', '').
    sub('$PORT', '3000').
    sub('$RACK_ENV', 'development')
  exec "#{command} #{extra}"
end

def child_pids(pid)
  pipe = IO.popen("ps -ef | grep #{pid}")

  pipe.readlines.map do |line|
    parts = line.split(/\s+/)
    parts[2].to_i if parts[3] == pid.to_s and parts[2] != pipe.pid.to_s
  end.compact
end

def generate_report(name)
  tmpdir = "#{Dir.tmpdir}/codeclimate-test-coverage-*"
  `rm -rf #{tmpdir}`
  child = fork do
    ENV["TO_FILE"] = "1"
    ENV["CODECLIMATE_REPO_TOKEN"] = "63c0e1b7dad4058225454f297914889b2ea19974983df707e3272ffa821ca7f5" # token for cc-amend
    require "codeclimate-test-reporter"
    CodeClimate::TestReporter.start
    SimpleCov.command_name("Fooo")
    require './lib/cover_me'
    require './lib/cover_me2'
    yield
  end
  Process.wait(child)
  report = Dir.glob(tmpdir).first
  `mv #{report} test/report_#{name}.json`
end

desc "Spin up test server"
task :server do
  server
end

desc "Test"
task :default do
  pid = fork { server ">/dev/null 2>&1" }
  begin
    sleep 5 # wait for server to start

    key = "a-key-#{rand(99999999)}"

    # test the welcome page
    result = `curl --silent '127.0.0.1:3000'`
    raise "Server version failed: #{result}" unless result.include?("Welcome to cc-amend")

    # test invalid json
    result = `curl --silent -X POST '127.0.0.1:3000/amend/#{key}?count=4' --data-binary 'oops'`
    raise "Invalid json failed: #{result}" unless result.include?("Invalid JSON")

    # test combining reports
    3.times do |i|
      result = `curl --silent -X POST '127.0.0.1:3000/amend/#{key}?count=4' --data-binary @test/report_a.json`
      index = 3 - i
      raise "Server amend #{i} failed: #{result}" unless result.include?("waiting for #{index}/4 reports on #{key}")
    end

    # trigger report sending
    result = `curl --silent -X POST '127.0.0.1:3000/amend/#{key}?count=4' --data-binary @test/report_b.json`
    raise "Send failed: #{result}" unless result.include?("sent 4 reports")
  ensure
    (child_pids(pid) + [pid]).each { |pid| Process.kill(:TERM, pid) }
  end
end

# end-to-end test:
# - run generate reports with baz commented in/out to check for changes
# - run rake
# - check https://codeclimate.com/github/grosser/cc-amend/CoverMe to see that opposite is now reported (80<->100%)
task :generate_report do
  generate_report 'a' do
    CoverMe.new.foo
    # CoverMe.new.baz # toggle here
  end
  generate_report 'b' do
    CoverMe.new.bar
    CoverMe2.new.foo
  end
  `rm -rf coverage`
end