def test_basic_subscription(dataset, basic_subscriber):
xparam = ParamSpecBase(name='x',
paramtype='numeric',
label='x parameter',
unit='V')
yparam = ParamSpecBase(name='y',
paramtype='numeric',
label='y parameter',
unit='Hz')
idps = InterDependencies_(dependencies={yparam: (xparam, )})
dataset.set_interdependencies(idps)
dataset.mark_started()
sub_id = dataset.subscribe(basic_subscriber,
min_wait=0,
min_count=1,
state={})
assert len(dataset.subscribers) == 1
assert list(dataset.subscribers.keys()) == [sub_id]
expected_state = {}
for x in range(10):
y = -x**2
dataset.add_results([{'x': x, 'y': y}])
expected_state[x + 1] = [(x, y)]
@retry_until_does_not_throw(exception_class_to_expect=AssertionError,
delay=0,
tries=10)
def assert_expected_state():
assert dataset.subscribers[sub_id].state == expected_state
assert_expected_state()
dataset.unsubscribe(sub_id)
assert len(dataset.subscribers) == 0
assert list(dataset.subscribers.keys()) == []
# Ensure the trigger for the subscriber has been removed from the database
get_triggers_sql = "SELECT * FROM sqlite_master WHERE TYPE = 'trigger';"
triggers = atomic_transaction(dataset.conn, get_triggers_sql).fetchall()
assert len(triggers) == 0
def test_basic_subscription(dataset, basic_subscriber):
xparam = ParamSpec(name='x', paramtype='numeric', label='x parameter',
unit='V')
yparam = ParamSpec(name='y', paramtype='numeric', label='y parameter',
unit='Hz', depends_on=[xparam])
dataset.add_parameter(xparam)
dataset.add_parameter(yparam)
sub_id = dataset.subscribe(basic_subscriber, min_wait=0, min_count=1,
state={})
assert len(dataset.subscribers) == 1
assert list(dataset.subscribers.keys()) == [sub_id]
expected_state = {}
for x in range(10):
y = -x**2
dataset.add_result({'x': x, 'y': y})
expected_state[x+1] = [(x, y)]
assert dataset.subscribers[sub_id].state == expected_state
def test_subscription_from_config(dataset, basic_subscriber):
"""
This test is similar to `test_basic_subscription`, with the only
difference that another subscriber from a config file is added.
"""
# This string represents the config file in the home directory:
config = """
{
"subscription":{
"subscribers":{
"test_subscriber":{
"factory": "qcodes.tests.dataset.test_subscribing.MockSubscriber",
"factory_kwargs":{
"lg": false
},
"subscription_kwargs":{
"min_wait": 0,
"min_count": 1,
"callback_kwargs": {}
}
}
}
}
}
"""
# This little dance around the db_location is due to the fact that the
# dataset fixture creates a dataset in a db in a temporary directory.
# Therefore we need to 'backup' the path to the db when using the
# default configuration.
db_location = qcodes.config.core.db_location
with default_config(user_config=config):
qcodes.config.core.db_location = db_location
assert 'test_subscriber' in qcodes.config.subscription.subscribers
xparam = ParamSpecBase(name='x',
paramtype='numeric',
label='x parameter',
unit='V')
yparam = ParamSpecBase(name='y',
paramtype='numeric',
label='y parameter',
unit='Hz')
idps = InterDependencies_(dependencies={yparam: (xparam,)})
dataset.set_interdependencies(idps)
dataset.mark_started()
sub_id = dataset.subscribe(basic_subscriber, min_wait=0, min_count=1,
state={})
sub_id_c = dataset.subscribe_from_config('test_subscriber')
assert len(dataset.subscribers) == 2
assert list(dataset.subscribers.keys()) == [sub_id, sub_id_c]
expected_state = {}
# Here we are only testing 2 to reduce the CI time
for x in range(2):
y = -x**2
dataset.add_result({'x': x, 'y': y})
expected_state[x+1] = [(x, y)]
@retry_until_does_not_throw(
exception_class_to_expect=AssertionError, delay=0, tries=10)
def assert_expected_state():
assert dataset.subscribers[sub_id].state == expected_state
assert dataset.subscribers[sub_id_c].state == expected_state
assert_expected_state()