def test_solver_feature_properties(self):
self.assertTrue(solver_object('dw2000').is_qpu)
self.assertFalse(solver_object('dw2000').is_software)
self.assertFalse(solver_object('c4-sw_x').is_qpu)
self.assertTrue(solver_object('c4-sw_x').is_software)
self.assertFalse(solver_object('dw2000').is_vfyc)
self.assertEqual(solver_object('dw2000').num_qubits, 3)
self.assertFalse(solver_object('dw2000').has_flux_biases)
data = json.loads(solver_data('test'))
data['properties']['vfyc'] = 'error'
self.assertFalse(Solver(None, data).is_vfyc)
data['properties']['vfyc'] = True
self.assertTrue(Solver(None, data).is_vfyc)
data['properties']['parameters']['flux_biases'] = '...'
self.assertTrue(Solver(None, data).has_flux_biases)
# test `.is_online` property
self.assertTrue(solver_object('dw2000').is_online)
data = json.loads(solver_data('test'))
data['status'] = 'offline'
self.assertFalse(Solver(None, data).is_online)
del data['status']
self.assertTrue(Solver(None, data).is_online)
def test_solver_filtering_in_client(self):
self.assertTrue(
Client.is_solver_handled(
Solver(None, json.loads(solver_object('test')))))
self.assertFalse(
Client.is_solver_handled(
Solver(None, json.loads(solver_object('c4-sw_')))))
self.assertFalse(None)
def test_cancel_with_id(self):
"""Make sure the cancel method submits to the right endpoint.
When cancel is called after the submission is finished.
"""
submission_id = 'test-id'
reply_body = '[%s]' % continue_reply(submission_id, 'solver')
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.get = lambda a: choose_reply(
a,
{'endpoint/problems/?id={}'.format(submission_id): reply_body})
client.session.delete = DeleteEvent.handle
solver = Solver(client, solver_data('abc123'))
future = solver.retrieve_problem(submission_id)
future.cancel()
try:
self.assertTrue(future.id is not None)
future.samples
self.fail()
except DeleteEvent as event:
if event.url == 'endpoint/problems/':
self.assertEqual(event.body,
'["{}"]'.format(submission_id))
else:
self.assertEqual(
event.url,
'endpoint/problems/{}/'.format(submission_id))
def test_submit_continue_then_ok_reply(self):
"""Handle polling for a complete problem."""
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.post = lambda a, _: choose_reply(
a, {
'endpoint/problems/': '[%s]' % continue_reply(
'123', 'abc123')
})
client.session.get = lambda a: choose_reply(
a, {
'endpoint/problems/?id=123':
'[%s]' % complete_no_answer_reply('123', 'abc123'),
'endpoint/problems/123/':
complete_reply('123', 'abc123')
})
solver = Solver(client, solver_data('abc123'))
# Build a problem
linear = {index: 1 for index in solver.nodes}
quad = {key: -1 for key in solver.undirected_edges}
results = solver.sample_ising(linear, quad, num_reads=100)
#
self._check(results, linear, quad, 100)
def test_immediate_polling_with_local_clock_unsynced(self):
"""First poll happens with minimal delay if local clock is way off from
the remote/server clock."""
with Client('endpoint', 'token') as client:
badnow = datetime_in_future(100)
client.session = mock.Mock()
client.session.post = lambda path, _: choose_reply(
path,
{'endpoint/problems/': '[%s]' % continue_reply('1', 'abc123')},
date=badnow)
client.session.get = lambda path: choose_reply(path, {
'endpoint/problems/?id=1':
'[%s]' % complete_no_answer_reply('1', 'abc123'),
'endpoint/problems/1/':
complete_reply('1', 'abc123')
},
date=badnow)
solver = Solver(client, solver_data('abc123'))
def assert_no_delay(s):
s and self.assertTrue(
abs(s - client._POLL_BACKOFF_MIN) <
client._POLL_BACKOFF_MIN / 10.0)
with mock.patch('time.sleep', assert_no_delay):
future = solver.sample_qubo({})
future.result()
def test_submit_continue_then_ok_reply(self):
"""Handle polling for a complete problem."""
with Client('endpoint', 'token') as client:
now = datetime_in_future(0)
eta_min, eta_max = datetime_in_future(10), datetime_in_future(30)
client.session = mock.Mock()
client.session.post = lambda a, _: choose_reply(a, {
'endpoint/problems/':
'[%s]' % continue_reply(
'123', 'abc123', eta_min=eta_min, eta_max=eta_max, now=now)
},
date=now)
client.session.get = lambda a: choose_reply(a, {
'endpoint/problems/?id=123':
'[%s]' % complete_no_answer_reply('123', 'abc123'),
'endpoint/problems/123/':
complete_reply('123', 'abc123')
},
date=now)
solver = Solver(client, solver_data('abc123'))
# Build a problem
linear = {index: 1 for index in solver.nodes}
quad = {key: -1 for key in solver.undirected_edges}
results = solver.sample_ising(linear, quad, num_reads=100)
self._check(results, linear, quad, 100)
# test future has eta_min and eta_max parsed correctly
self.assertEqual(results.eta_min, eta_min)
self.assertEqual(results.eta_max, eta_max)
def test_eta_min_is_respected_on_first_poll(self):
"eta_min/earliest_estimated_completion should be respected if present in response"
with Client('endpoint', 'token') as client:
now = datetime_in_future(0)
eta_min, eta_max = datetime_in_future(10), datetime_in_future(30)
client.session = mock.Mock()
client.session.post = lambda path, _: choose_reply(path, {
'endpoint/problems/':
'[%s]' % continue_reply(
'1', 'abc123', eta_min=eta_min, eta_max=eta_max, now=now)
},
date=now)
client.session.get = lambda path: choose_reply(path, {
'endpoint/problems/?id=1':
'[%s]' % complete_no_answer_reply('1', 'abc123'),
'endpoint/problems/1/':
complete_reply('1', 'abc123')
},
date=now)
solver = Solver(client, solver_data('abc123'))
def assert_min_eta(s):
s and self.assertTrue(abs(s - 10) < 1)
with mock.patch('time.sleep', assert_min_eta):
future = solver.sample_qubo({})
future.result()
def test_exponential_backoff_polling(self):
"After each poll, back-off should double"
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
# on submit, return status pending
client.session.post = lambda path, _: choose_reply(path, {
'endpoint/problems/': '[%s]' % continue_reply('123', 'abc123')
})
# on first and second status poll, return pending
# on third status poll, return completed
def continue_then_complete(path, state={'count': 0}):
state['count'] += 1
if state['count'] < 3:
return choose_reply(path, {
'endpoint/problems/?id=123': '[%s]' % continue_reply('123', 'abc123'),
'endpoint/problems/123/': continue_reply('123', 'abc123')
})
else:
return choose_reply(path, {
'endpoint/problems/?id=123': '[%s]' % complete_no_answer_reply('123', 'abc123'),
'endpoint/problems/123/': complete_reply('123', 'abc123')
})
client.session.get = continue_then_complete
solver = Solver(client, solver_data('abc123'))
future = solver.sample_qubo({})
future.result()
# after third poll, back-off interval should be 4 x initial back-off
self.assertEqual(future._poll_backoff, Client._POLL_BACKOFF_MIN * 2**2)
def test_submit_continue_then_ok_and_error_reply(self):
"""Handle polling for the status of multiple problems."""
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
# on first status poll, return pending for both problems
# on second status poll, return error for first problem and complete for second
def continue_then_complete(path, state={'count': 0}):
state['count'] += 1
if state['count'] < 2:
return choose_reply(path, {
'endpoint/problems/?id=1': '[{}]'.format(continue_reply('1', 'abc123')),
'endpoint/problems/?id=2': '[{}]'.format(continue_reply('2', 'abc123')),
'endpoint/problems/1/': continue_reply('1', 'abc123'),
'endpoint/problems/2/': continue_reply('2', 'abc123'),
'endpoint/problems/?id=1,2': '[{},{}]'.format(continue_reply('1', 'abc123'),
continue_reply('2', 'abc123')),
'endpoint/problems/?id=2,1': '[{},{}]'.format(continue_reply('2', 'abc123'),
continue_reply('1', 'abc123'))
})
else:
return choose_reply(path, {
'endpoint/problems/?id=1': '[{}]'.format(error_reply('1', 'abc123', 'error')),
'endpoint/problems/?id=2': '[{}]'.format(complete_no_answer_reply('2', 'abc123')),
'endpoint/problems/1/': error_reply('1', 'abc123', 'error'),
'endpoint/problems/2/': complete_reply('2', 'abc123'),
'endpoint/problems/?id=1,2': '[{},{}]'.format(error_reply('1', 'abc123', 'error'),
complete_no_answer_reply('2', 'abc123')),
'endpoint/problems/?id=2,1': '[{},{}]'.format(complete_no_answer_reply('2', 'abc123'),
error_reply('1', 'abc123', 'error'))
})
client.session.get = continue_then_complete
def accept_problems_with_continue_reply(path, body, ids=iter('12')):
problems = json.loads(body)
return choose_reply(path, {
'endpoint/problems/': json.dumps(
[json.loads(continue_reply(next(ids), 'abc123')) for _ in problems])
})
client.session.post = accept_problems_with_continue_reply
solver = Solver(client, solver_data('abc123'))
linear = {index: 1 for index in solver.nodes}
quad = {key: -1 for key in solver.undirected_edges}
results1 = solver.sample_ising(linear, quad, num_reads=100)
results2 = solver.sample_ising(linear, quad, num_reads=100)
with self.assertRaises(SolverFailureError):
self._check(results1, linear, quad, 100)
self._check(results2, linear, quad, 100)
def get_solver():
data = {
"properties": {
"supported_problem_types": ["qubo", "ising"],
"qubits": [0, 1, 2, 3],
"couplers": [(0, 1), (1, 2), (2, 3), (3, 0)],
"num_qubits": 4,
"parameters": {"num_reads": "Number of samples to return."}
},
"id": "test-solver",
"description": "A test solver"
}
return Solver(client=None, data=data)
def test_submit_null_reply(self):
"""Get an error when the server's response is incomplete."""
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.post = lambda a, _: choose_reply(a, {'endpoint/problems/': ''})
solver = Solver(client, solver_data('abc123'))
# Build a problem
linear = {index: 1 for index in solver.nodes}
quad = {key: -1 for key in solver.undirected_edges}
results = solver.sample_ising(linear, quad, num_reads=100)
with self.assertRaises(ValueError):
results.samples
def test_submit_cancel_reply(self):
"""Handle a response for a canceled job."""
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.post = lambda a, _: choose_reply(a, {'endpoint/problems/': '[%s]' % cancel_reply('123', 'abc123')})
solver = Solver(client, solver_data('abc123'))
# Build a problem
linear = {index: 1 for index in solver.nodes}
quad = {key: -1 for key in solver.undirected_edges}
results = solver.sample_ising(linear, quad, num_reads=100)
with self.assertRaises(CanceledFutureError):
results.samples
def test_submit_continue_then_error_reply(self):
"""Handle polling for an error message."""
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.post = lambda a, _: choose_reply(a, {'endpoint/problems/': '[%s]' % continue_reply('123', 'abc123')})
client.session.get = lambda a: choose_reply(a, {
'endpoint/problems/?id=123': '[%s]' % error_reply('123', 'abc123', "error message")})
solver = Solver(client, solver_data('abc123'))
# Build a problem
linear = {index: 1 for index in solver.nodes}
quad = {key: -1 for key in solver.undirected_edges}
results = solver.sample_ising(linear, quad, num_reads=100)
with self.assertRaises(SolverFailureError):
self._check(results, linear, quad, 100)
def test_submit_error_reply(self):
"""Handle an error on problem submission."""
error_body = 'An error message'
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.post = lambda a, _: choose_reply(a, {
'endpoint/problems/': '[%s]' % error_reply('123', 'abc123', error_body)})
solver = Solver(client, solver_data('abc123'))
# Build a problem
linear = {index: 1 for index in solver.nodes}
quad = {key: -1 for key in solver.undirected_edges}
results = solver.sample_ising(linear, quad, num_reads=100)
with self.assertRaises(SolverFailureError):
results.samples
def test_submit_immediate_error_reply(self):
"""Handle an (obvious) error on problem submission."""
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.post = lambda a, _: choose_reply(
a, {
'endpoint/problems/':
'[%s]' % immediate_error_reply(
400, "Missing parameter 'num_reads' in problem JSON")
})
solver = Solver(client, solver_data('abc123'))
linear, quad = generate_random_ising_problem(solver)
results = solver.sample_ising(linear, quad)
with self.assertRaises(SolverFailureError):
results.samples
def test_cancel_without_id(self):
"""Make sure the cancel method submits to the right endpoint.
When cancel is called before the submission has returned the problem id.
"""
submission_id = 'test-id'
reply_body = '[%s]' % continue_reply(submission_id, 'solver')
release_reply = threading.Event()
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.get = lambda a: choose_reply(
a,
{'endpoint/problems/?id={}'.format(submission_id): reply_body})
def post(a, _):
release_reply.wait()
return choose_reply(
a,
{'endpoint/problems/'.format(submission_id): reply_body})
client.session.post = post
client.session.delete = DeleteEvent.handle
solver = Solver(client, solver_data('abc123'))
# Build a problem
linear = {index: 1 for index in solver.nodes}
quad = {key: -1 for key in solver.undirected_edges}
future = solver.sample_ising(linear, quad)
future.cancel()
try:
release_reply.set()
future.samples
self.fail()
except DeleteEvent as event:
if event.url == 'endpoint/problems/':
self.assertEqual(event.body,
'["{}"]'.format(submission_id))
else:
self.assertEqual(
event.url,
'endpoint/problems/{}/'.format(submission_id))
def test_immediate_polling_without_eta_min(self):
"First poll happens with minimal delay if eta_min missing"
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.post = lambda path, _: choose_reply(path, {
'endpoint/problems/': '[%s]' % continue_reply('1', 'abc123')
})
client.session.get = lambda path: choose_reply(path, {
'endpoint/problems/?id=1': '[%s]' % complete_no_answer_reply('1', 'abc123'),
'endpoint/problems/1/': complete_reply('1', 'abc123')
})
solver = Solver(client, solver_data('abc123'))
def assert_no_delay(s):
s and self.assertTrue(
abs(s - client._POLL_BACKOFF_MIN) < client._POLL_BACKOFF_MIN / 10.0)
with mock.patch('time.sleep', assert_no_delay):
future = solver.sample_qubo({})
future.result()
def test_submit_continue_then_ok_and_error_reply(self):
"""Handle polling for the status of multiple problems."""
# Reduce the number of poll threads to 1 so that the system can be tested
old_value = Client._POLL_THREAD_COUNT
Client._POLL_THREAD_COUNT = 1
with Client('endpoint', 'token') as client:
client.session = mock.Mock()
client.session.get = lambda a: choose_reply(
a,
{
# Wait until both problems are
'endpoint/problems/?id=1':
'[%s]' % continue_reply('1', 'abc123'),
'endpoint/problems/?id=2':
'[%s]' % continue_reply('2', 'abc123'),
'endpoint/problems/?id=2,1':
'[' + complete_no_answer_reply('2', 'abc123') + ',' +
error_reply('1', 'abc123', 'error') + ']',
'endpoint/problems/?id=1,2':
'[' + error_reply('1', 'abc123', 'error') + ',' +
complete_no_answer_reply('2', 'abc123') + ']',
'endpoint/problems/1/':
error_reply('1', 'abc123', 'Error message'),
'endpoint/problems/2/':
complete_reply('2', 'abc123')
})
def switch_post_reply(path, body):
message = json.loads(body)
if len(message) == 1:
client.session.post = lambda a, _: choose_reply(
a, {
'endpoint/problems/':
'[%s]' % continue_reply('2', 'abc123')
})
return choose_reply(
'', {'': '[%s]' % continue_reply('1', 'abc123')})
else:
client.session.post = None
return choose_reply(
'endpoint/', {
'endpoint/':
'[%s, %s]' % (continue_reply(
'1', 'abc123'), continue_reply('2', 'abc123'))
})
client.session.post = lambda a, body: switch_post_reply(a, body)
solver = Solver(client, solver_data('abc123'))
# Build a problem
linear = {index: 1 for index in solver.nodes}
quad = {key: -1 for key in solver.undirected_edges}
results1 = solver.sample_ising(linear, quad, num_reads=100)
results2 = solver.sample_ising(linear, quad, num_reads=100)
with self.assertRaises(SolverFailureError):
self._check(results1, linear, quad, 100)
self._check(results2, linear, quad, 100)
Client._POLL_THREAD_COUNT = old_value
def solver_object(id_, incomplete=False):
return Solver(client=None, data=json.loads(solver_data(id_, incomplete)))