def test_detector_with_assign_combinator():
""" We should correctly generate a detector comprised of two assignment
functions
"""
cpu_util_string = 'cpu.utilization'
sum_string = 'utilization_sum'
count_string = 'utilization_count'
mean_string = 'utilization_mean'
sum_data = Data(cpu_util_string).sum()
count_data = Data(cpu_util_string).count()
utilization_sum = Assign(sum_string, sum_data)
utilization_count = Assign(count_string, count_data)
mean_data = Div(Ref(sum_string), Ref(count_string))
utilization_mean = Assign(mean_string, mean_data)
detect = Detect(When(GT(Ref(mean_string), 50))).publish(label='detector')
program = Program(utilization_sum, utilization_count, utilization_mean,
detect)
detector = Detector().with_program(program)
assert detector.options["programText"] == "{0}\n{1}\n{2}\n{3}".format(
str(utilization_sum), str(utilization_count), str(utilization_mean),
str(detect))
assert program.statements.pop() == detect
assert program.statements.pop() == utilization_mean
assert program.statements.pop() == utilization_count
assert program.statements.pop() == utilization_sum
def test_assign(assignee, expr):
"""Assign.__str__ should always return a string matching assignee = expr."""
assert str(Assign(assignee, expr)) == \
"{0} = {1}".format(str(assignee), str(expr))
def test_valid_publish_statements_assign_invalid():
with pytest.raises(ProgramDoesNotPublishTimeseriesError):
Program(
Assign('A', Data('foo'))
).validate()
def test_valid_publish_statements_assign_happy():
Program(
Assign('A', Data('foo').publish(label='lol'))
).validate()
