def test_get_next_call(deployed_contracts, scheduled_calls):
scheduler = Scheduler(deployed_contracts.Scheduler)
# target block - 1
next_call_a = scheduler.get_next_call(scheduled_calls[1].targetBlock() - 1)
assert next_call_a == scheduled_calls[1]._meta.address
# target block - 1
next_call_b = scheduler.get_next_call(scheduled_calls[1].targetBlock())
assert next_call_b == scheduled_calls[1]._meta.address
# before all scheduled_calls
next_call_c = scheduler.get_next_call(0)
assert next_call_c == scheduled_calls[0]._meta.address
# after all scheduled_calls
next_call_d = scheduler.get_next_call(scheduled_calls[-1].targetBlock() +
1)
assert next_call_d is None
