class TestMultiTask

def setup
  Task.clear
  @runs = Array.new
end

def test_all_multitasks_wait_on_slow_prerequisites
  task :slow do 3.times do |i| @runs << "S#{i}"; sleep 0.05 end end
  task :a => [:slow] do 3.times do |i| @runs << "A#{i}"; sleep 0.01 end end
  task :b => [:slow] do 3.times do |i| @runs << "B#{i}"; sleep 0.01 end end
  multitask :both => [:a, :b]
  Task[:both].invoke
  assert_equal 9, @runs.size
  assert @runs.index("S0") < @runs.index("S1")
  assert @runs.index("S1") < @runs.index("S2")
  assert @runs.index("S2") < @runs.index("A0")
  assert @runs.index("S2") < @runs.index("B0")
  assert @runs.index("A0") < @runs.index("A1")
  assert @runs.index("A1") < @runs.index("A2")
  assert @runs.index("B0") < @runs.index("B1")
  assert @runs.index("B1") < @runs.index("B2")
end

def test_running_multitasks
  task :a do 3.times do |i| @runs << "A#{i}"; sleep 0.01; end end
  task :b do 3.times do |i| @runs << "B#{i}"; sleep 0.01;  end end
  multitask :both => [:a, :b]
  Task[:both].invoke
  assert_equal 6, @runs.size
  assert @runs.index("A0") < @runs.index("A1")
  assert @runs.index("A1") < @runs.index("A2")
  assert @runs.index("B0") < @runs.index("B1")
  assert @runs.index("B1") < @runs.index("B2")
end