def test_job_complex_1():
task1 = ComputingTask(20)
task2 = TransferTask(1000000)
job = Job([task1, task2])
request1 = job.try_step()
assert request1 == ResourceUsage({'cpu_usage': 20})
result = job.do_step(usage_response=ResourceUsage({'cpu_usage': 20}))
assert result is False
request2 = job.try_step()
assert request2 == ResourceUsage({'network': 1000000})
result = job.do_step(usage_response=ResourceUsage({'network': 1000000}))
assert result is True
request3 = job.try_step()
assert request3 == ResourceUsage()
