def test_validating_completions(self):
course_key = CourseKey.from_string('course-v1:abc+def+ghi')
other_course_key = CourseKey.from_string('course-v1:ihg+fed+cba')
other_user = User.objects.create(username='******')
aggregators = [
models.Aggregator.objects.submit_completion(
user=other_user,
course_key=course_key,
block_key=course_key.make_usage_key(block_type='course',
block_id='course'),
aggregation_name='course',
earned=4.0,
possible=4.0,
last_modified=timezone.now(),
)[0],
models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=other_course_key,
block_key=other_course_key.make_usage_key(block_type='course',
block_id='course'),
aggregation_name='course',
earned=1.0,
possible=3.0,
last_modified=timezone.now(),
)[0],
]
for agg in aggregators:
with pytest.raises(ValueError):
serializers.AggregatorAdapter(
user=self.test_user,
course_key=course_key,
aggregators=[agg],
)
def test_simple_aggregation_structure(self):
course_completion, _ = models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=self.course_key,
block_key=self.course_key.make_usage_key(block_type='course',
block_id='crs'),
aggregation_name='course',
earned=4.2,
possible=9.6,
last_modified=timezone.now(),
)
sequential_completion, _ = models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=self.course_key,
block_key=self.course_key.make_usage_key(block_type='sequential',
block_id='chap1'),
aggregation_name='sequential',
earned=1.8,
possible=3.4,
last_modified=timezone.now(),
)
agstruct = serializers.AggregatorAdapter(
user=self.test_user,
course_key=self.course_key,
)
agstruct.add_aggregator(course_completion)
agstruct.update_aggregators([sequential_completion])
self.assertEqual(agstruct.course, course_completion)
self.assertEqual(agstruct.sequential, [sequential_completion])
def test_mean(self):
course_key = CourseKey.from_string('course-v1:abc+def+ghi')
data = [
# earned, possible
(5., 20.),
(7., 14.),
(3., 9.),
(8., 14.),
]
expected_mean = sum(item[0] / item[1] for item in data) / 5.
completions = [
models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=course_key,
block_key=course_key.make_usage_key(
block_type='course', block_id='course{}'.format(idx)),
aggregation_name='course',
earned=data[idx][0],
possible=data[idx][1],
last_modified=timezone.now(),
)[0] for idx in range(4)
]
serial = _course_completion_serializer_factory(['mean'])(
serializers.AggregatorAdapter(user=self.test_user,
course_key=course_key,
aggregators=completions),
requested_fields={'mean'})
self.assertAlmostEqual(serial.data['mean'], expected_mean)
def test_mean_with_no_completions(self):
# A course that has no aggregators recorded.
course_key = CourseKey.from_string('course-v1:abc+def+ghj')
serial = _course_completion_serializer_factory(['mean'])(
serializers.AggregatorAdapter(
user=self.test_user,
course_key=course_key,
aggregators=[],
),
requested_fields={'mean'})
self.assertAlmostEqual(serial.data['mean'], 0)
def test_aggregation_without_completions(self):
course_key = CourseKey.from_string('course-v1:abc+def+ghi')
serial = _course_completion_serializer_factory([])(
serializers.AggregatorAdapter(user=self.test_user,
course_key=course_key,
aggregators=[]))
self.assertEqual(
serial.data['completion'],
{
'earned': 0.0,
'possible': None,
'percent': 0.0,
},
)
def test_filtering_completions(self):
course_key = CourseKey.from_string('course-v1:abc+def+ghi')
aggregator = models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=course_key,
block_key=course_key.make_usage_key(block_type='video',
block_id='neatvideo'),
aggregation_name='video',
earned=1.0,
possible=2.0,
last_modified=timezone.now(),
)[0]
adapted = serializers.AggregatorAdapter(
user=self.test_user,
course_key=course_key,
aggregators=[aggregator],
)
assert not adapted.aggregators
def test_invalid_aggregator(self):
course_key = CourseKey.from_string('course-v1:abc+def+ghi')
completion, _ = models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=course_key,
block_key=course_key.make_usage_key(block_type='course',
block_id='course'),
aggregation_name='course',
earned=0.0,
possible=0.0,
last_modified=timezone.now(),
)
agg = serializers.AggregatorAdapter(user=self.test_user,
course_key=course_key,
aggregators=[completion])
# coverage demands this, because we have __getattr__ overridden
with self.assertRaises(AttributeError):
agg.something_that_doesnt_exist # pylint: disable=pointless-statement
def test_zero_possible(self):
course_key = CourseKey.from_string('course-v1:abc+def+ghi')
completion, _ = models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=course_key,
block_key=course_key.make_usage_key(block_type='course',
block_id='course'),
aggregation_name='course',
earned=0.0,
possible=0.0,
last_modified=timezone.now(),
)
serial = _course_completion_serializer_factory([])(
serializers.AggregatorAdapter(user=self.test_user,
course_key=course_key,
aggregators=[completion]))
self.assertEqual(
serial.data['completion'],
{
'earned': 0.0,
'possible': 0.0,
'percent': 1.0,
},
)
def assert_serialized_completions(self, serializer_cls_args, extra_body,
recalc_stale):
"""
Ensures that the course completion serializer returns the expected results
for this set of submitted completions.
"""
serializer_cls = _course_completion_serializer_factory(
serializer_cls_args)
aggregators = [
models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=self.course_key,
aggregation_name='course',
block_key=self.course_key.make_usage_key(block_type='course',
block_id='course'),
earned=16.0,
possible=19.0,
last_modified=timezone.now(),
)[0],
models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=self.course_key,
aggregation_name='sequential',
block_key=self.course_key.make_usage_key(
block_type='sequential', block_id='seq1'),
earned=6.0,
possible=7.0,
last_modified=timezone.now(),
)[0],
models.Aggregator.objects.submit_completion(
user=self.test_user,
course_key=self.course_key,
aggregation_name='sequential',
block_key=self.course_key.make_usage_key(
block_type='sequential', block_id='seq2'),
earned=10.0,
possible=12.0,
last_modified=timezone.now(),
)[0],
]
is_stale = recalc_stale and models.StaleCompletion.objects.filter(
username=self.test_user.username,
course_key=self.course_key,
resolved=False)
completion = serializers.AggregatorAdapter(
user=self.test_user,
course_key=self.course_key,
aggregators=aggregators,
recalculate_stale=recalc_stale,
)
serial = serializer_cls(completion)
expected = {
'course_key': str(self.course_key),
'completion': {
'earned': 0.0 if is_stale else 16.0,
'possible': None if is_stale else 19.0,
'percent': 0.0 if is_stale else 16 / 19,
},
}
expected.update(extra_body)
# Need to allow for rounding error when retrieving the percent from the test database
self.assertEqual(serial.data['course_key'], expected['course_key'])
self.assertEqual(serial.data['completion']['earned'],
expected['completion']['earned'])
self.assertEqual(serial.data['completion']['possible'],
expected['completion']['possible'])
self.assertAlmostEqual(serial.data['completion']['possible'],
expected['completion']['possible'],
places=14)