def test_fetch_video(self):
video_value = 'test_video_id'
with self.store.branch_setting(ModuleStoreEnum.Branch.draft_preferred, self.course.id):
CourseDetails.update_about_video(self.course, video_value, self.user.id)
self.assertEqual(CourseDetails.fetch_youtube_video_id(self.course.id), video_value)
video_url = CourseDetails.fetch_video_url(self.course.id)
self.assertRegexpMatches(video_url, r'http://.*{}'.format(video_value))
def check_course_overview_against_course(self, course):
"""
Compares a CourseOverview object against its corresponding
CourseDescriptor object.
Specifically, given a course, test that data within the following three
objects match each other:
- the CourseDescriptor itself
- a CourseOverview that was newly constructed from _create_or_update
- a CourseOverview that was loaded from the MySQL database
Arguments:
course (CourseDescriptor): the course to be checked.
"""
def get_seconds_since_epoch(date_time):
"""
Returns the number of seconds between the Unix Epoch and the given
datetime. If the given datetime is None, return None.
Arguments:
date_time (datetime): the datetime in question.
"""
if date_time is None:
return None
epoch = datetime.datetime.utcfromtimestamp(0).replace(tzinfo=pytz.utc)
return math.floor((date_time - epoch).total_seconds())
# Load the CourseOverview from the cache twice. The first load will be a cache miss (because the cache
# is empty) so the course will be newly created with CourseOverview._create_or_update. The second
# load will be a cache hit, so the course will be loaded from the cache.
course_overview_cache_miss = CourseOverview.get_from_id(course.id)
course_overview_cache_hit = CourseOverview.get_from_id(course.id)
# Test if value of these attributes match between the three objects
fields_to_test = [
'id',
'display_name',
'display_number_with_default',
'display_org_with_default',
'advertised_start',
'social_sharing_url',
'certificates_display_behavior',
'certificates_show_before_end',
'cert_name_short',
'cert_name_long',
'lowest_passing_grade',
'end_of_course_survey_url',
'mobile_available',
'visible_to_staff_only',
'location',
'number',
'url_name',
'display_name_with_default',
'display_name_with_default_escaped',
'start_date_is_still_default',
'pre_requisite_courses',
'enrollment_domain',
'invitation_only',
'max_student_enrollments_allowed',
'catalog_visibility',
]
for attribute_name in fields_to_test:
course_value = getattr(course, attribute_name)
cache_miss_value = getattr(course_overview_cache_miss, attribute_name)
cache_hit_value = getattr(course_overview_cache_hit, attribute_name)
self.assertEqual(course_value, cache_miss_value)
self.assertEqual(cache_miss_value, cache_hit_value)
# Test if return values for all methods are equal between the three objects
methods_to_test = [
('clean_id', ()),
('clean_id', ('#',)),
('has_ended', ()),
('has_started', ()),
('may_certify', ()),
]
for method_name, method_args in methods_to_test:
course_value = getattr(course, method_name)(*method_args)
cache_miss_value = getattr(course_overview_cache_miss, method_name)(*method_args)
cache_hit_value = getattr(course_overview_cache_hit, method_name)(*method_args)
self.assertEqual(course_value, cache_miss_value)
self.assertEqual(cache_miss_value, cache_hit_value)
# Other values to test
# Note: we test the time-related attributes here instead of in
# fields_to_test, because we run into trouble while testing datetimes
# for equality. When writing and reading dates from databases, the
# resulting values are often off by fractions of a second. So, as a
# workaround, we simply test if the start and end times are the same
# number of seconds from the Unix epoch.
time_field_accessor = lambda object, field_name: get_seconds_since_epoch(getattr(object, field_name))
# The course about fields are accessed through the CourseDetail
# class for the course module, and stored as attributes on the
# CourseOverview objects.
course_about_accessor = lambda object, field_name: CourseDetails.fetch_about_attribute(object.id, field_name)
others_to_test = [
('start', time_field_accessor, time_field_accessor),
('end', time_field_accessor, time_field_accessor),
('enrollment_start', time_field_accessor, time_field_accessor),
('enrollment_end', time_field_accessor, time_field_accessor),
('announcement', time_field_accessor, time_field_accessor),
('short_description', course_about_accessor, getattr),
('effort', course_about_accessor, getattr),
(
'video',
lambda c, __: CourseDetails.fetch_video_url(c.id),
lambda c, __: c.course_video_url,
),
(
'course_image_url',
lambda c, __: course_image_url(c),
getattr,
),
(
'has_any_active_web_certificate',
lambda c, field_name: get_active_web_certificate(c) is not None,
getattr,
),
]
for attribute_name, course_accessor, course_overview_accessor in others_to_test:
course_value = course_accessor(course, attribute_name)
cache_miss_value = course_overview_accessor(course_overview_cache_miss, attribute_name)
cache_hit_value = course_overview_accessor(course_overview_cache_hit, attribute_name)
self.assertEqual(course_value, cache_miss_value)
self.assertEqual(cache_miss_value, cache_hit_value)
# test tabs for both cached miss and cached hit courses
for course_overview in [course_overview_cache_miss, course_overview_cache_hit]:
course_overview_tabs = course_overview.tabs.all()
course_resp_tabs = {tab.tab_id for tab in course_overview_tabs}
self.assertEqual(self.COURSE_OVERVIEW_TABS, course_resp_tabs)
def _create_from_course(cls, course):
"""
Creates a CourseOverview object from a CourseDescriptor.
Does not touch the database, simply constructs and returns an overview
from the given course.
Arguments:
course (CourseDescriptor): any course descriptor object
Returns:
CourseOverview: overview extracted from the given course
"""
from lms.djangoapps.certificates.api import get_active_web_certificate
from openedx.core.lib.courses import course_image_url
log.info('Creating course overview for %s.', unicode(course.id))
# Workaround for a problem discovered in https://openedx.atlassian.net/browse/TNL-2806.
# If the course has a malformed grading policy such that
# course._grading_policy['GRADE_CUTOFFS'] = {}, then
# course.lowest_passing_grade will raise a ValueError.
# Work around this for now by defaulting to None.
try:
lowest_passing_grade = course.lowest_passing_grade
except ValueError:
lowest_passing_grade = None
display_name = course.display_name
start = course.start
end = course.end
max_student_enrollments_allowed = course.max_student_enrollments_allowed
if isinstance(course.id, CCXLocator):
from lms.djangoapps.ccx.utils import get_ccx_from_ccx_locator
ccx = get_ccx_from_ccx_locator(course.id)
display_name = ccx.display_name
start = ccx.start
end = ccx.due
max_student_enrollments_allowed = ccx.max_student_enrollments_allowed
return cls(
version=cls.VERSION,
id=course.id,
_location=course.location,
org=course.location.org,
display_name=display_name,
display_number_with_default=course.display_number_with_default,
display_org_with_default=course.display_org_with_default,
start=start,
end=end,
advertised_start=course.advertised_start,
announcement=course.announcement,
course_image_url=course_image_url(course),
social_sharing_url=course.social_sharing_url,
certificates_display_behavior=course.certificates_display_behavior,
certificates_show_before_end=course.certificates_show_before_end,
cert_html_view_enabled=course.cert_html_view_enabled,
has_any_active_web_certificate=(get_active_web_certificate(course) is not None),
cert_name_short=course.cert_name_short,
cert_name_long=course.cert_name_long,
lowest_passing_grade=lowest_passing_grade,
end_of_course_survey_url=course.end_of_course_survey_url,
days_early_for_beta=course.days_early_for_beta,
mobile_available=course.mobile_available,
visible_to_staff_only=course.visible_to_staff_only,
_pre_requisite_courses_json=json.dumps(course.pre_requisite_courses),
enrollment_start=course.enrollment_start,
enrollment_end=course.enrollment_end,
enrollment_domain=course.enrollment_domain,
invitation_only=course.invitation_only,
max_student_enrollments_allowed=max_student_enrollments_allowed,
catalog_visibility=course.catalog_visibility,
short_description=CourseDetails.fetch_about_attribute(course.id, 'short_description'),
effort=CourseDetails.fetch_about_attribute(course.id, 'effort'),
course_video_url=CourseDetails.fetch_video_url(course.id),
self_paced=course.self_paced,
)
def check_course_overview_against_course(self, course):
"""
Compares a CourseOverview object against its corresponding
CourseDescriptor object.
Specifically, given a course, test that data within the following three
objects match each other:
- the CourseDescriptor itself
- a CourseOverview that was newly constructed from _create_from_course
- a CourseOverview that was loaded from the MySQL database
Arguments:
course (CourseDescriptor): the course to be checked.
"""
def get_seconds_since_epoch(date_time):
"""
Returns the number of seconds between the Unix Epoch and the given
datetime. If the given datetime is None, return None.
Arguments:
date_time (datetime): the datetime in question.
"""
if date_time is None:
return None
epoch = datetime.datetime.utcfromtimestamp(0).replace(
tzinfo=pytz.utc)
return math.floor((date_time - epoch).total_seconds())
# Load the CourseOverview from the cache twice. The first load will be a cache miss (because the cache
# is empty) so the course will be newly created with CourseOverviewDescriptor.create_from_course. The second
# load will be a cache hit, so the course will be loaded from the cache.
course_overview_cache_miss = CourseOverview.get_from_id(course.id)
course_overview_cache_hit = CourseOverview.get_from_id(course.id)
# Test if value of these attributes match between the three objects
fields_to_test = [
'id',
'display_name',
'display_number_with_default',
'display_org_with_default',
'advertised_start',
'social_sharing_url',
'certificates_display_behavior',
'certificates_show_before_end',
'cert_name_short',
'cert_name_long',
'lowest_passing_grade',
'end_of_course_survey_url',
'mobile_available',
'visible_to_staff_only',
'location',
'number',
'url_name',
'display_name_with_default',
'display_name_with_default_escaped',
'start_date_is_still_default',
'pre_requisite_courses',
'enrollment_domain',
'invitation_only',
'max_student_enrollments_allowed',
'catalog_visibility',
]
for attribute_name in fields_to_test:
course_value = getattr(course, attribute_name)
cache_miss_value = getattr(course_overview_cache_miss,
attribute_name)
cache_hit_value = getattr(course_overview_cache_hit,
attribute_name)
self.assertEqual(course_value, cache_miss_value)
self.assertEqual(cache_miss_value, cache_hit_value)
# Test if return values for all methods are equal between the three objects
methods_to_test = [
('clean_id', ()),
('clean_id', ('#', )),
('has_ended', ()),
('has_started', ()),
('start_datetime_text', ('SHORT_DATE', )),
('start_datetime_text', ('DATE_TIME', )),
('end_datetime_text', ('SHORT_DATE', )),
('end_datetime_text', ('DATE_TIME', )),
('may_certify', ()),
]
for method_name, method_args in methods_to_test:
course_value = getattr(course, method_name)(*method_args)
cache_miss_value = getattr(course_overview_cache_miss,
method_name)(*method_args)
cache_hit_value = getattr(course_overview_cache_hit,
method_name)(*method_args)
self.assertEqual(course_value, cache_miss_value)
self.assertEqual(cache_miss_value, cache_hit_value)
# Other values to test
# Note: we test the time-related attributes here instead of in
# fields_to_test, because we run into trouble while testing datetimes
# for equality. When writing and reading dates from databases, the
# resulting values are often off by fractions of a second. So, as a
# workaround, we simply test if the start and end times are the same
# number of seconds from the Unix epoch.
time_field_accessor = lambda object, field_name: get_seconds_since_epoch(
getattr(object, field_name))
# The course about fields are accessed through the CourseDetail
# class for the course module, and stored as attributes on the
# CourseOverview objects.
course_about_accessor = lambda object, field_name: CourseDetails.fetch_about_attribute(
object.id, field_name)
others_to_test = [
('start', time_field_accessor, time_field_accessor),
('end', time_field_accessor, time_field_accessor),
('enrollment_start', time_field_accessor, time_field_accessor),
('enrollment_end', time_field_accessor, time_field_accessor),
('announcement', time_field_accessor, time_field_accessor),
('short_description', course_about_accessor, getattr),
('effort', course_about_accessor, getattr),
(
'video',
lambda c, __: CourseDetails.fetch_video_url(c.id),
lambda c, __: c.course_video_url,
),
(
'course_image_url',
lambda c, __: course_image_url(c),
getattr,
),
(
'has_any_active_web_certificate',
lambda c, field_name: get_active_web_certificate(c) is
not None,
getattr,
),
]
for attribute_name, course_accessor, course_overview_accessor in others_to_test:
course_value = course_accessor(course, attribute_name)
cache_miss_value = course_overview_accessor(
course_overview_cache_miss, attribute_name)
cache_hit_value = course_overview_accessor(
course_overview_cache_hit, attribute_name)
self.assertEqual(course_value, cache_miss_value)
self.assertEqual(cache_miss_value, cache_hit_value)
# test tabs for both cached miss and cached hit courses
for course_overview in [
course_overview_cache_miss, course_overview_cache_hit
]:
course_overview_tabs = course_overview.tabs.all()
course_resp_tabs = {tab.tab_id for tab in course_overview_tabs}
self.assertEqual(self.COURSE_OVERVIEW_TABS, course_resp_tabs)
def _create_from_course(cls, course):
"""
Creates a CourseOverview object from a CourseDescriptor.
Does not touch the database, simply constructs and returns an overview
from the given course.
Arguments:
course (CourseDescriptor): any course descriptor object
Returns:
CourseOverview: overview extracted from the given course
"""
from lms.djangoapps.certificates.api import get_active_web_certificate
from openedx.core.lib.courses import course_image_url
log.info('Creating course overview for %s.', unicode(course.id))
# Workaround for a problem discovered in https://openedx.atlassian.net/browse/TNL-2806.
# If the course has a malformed grading policy such that
# course._grading_policy['GRADE_CUTOFFS'] = {}, then
# course.lowest_passing_grade will raise a ValueError.
# Work around this for now by defaulting to None.
try:
lowest_passing_grade = course.lowest_passing_grade
except ValueError:
lowest_passing_grade = None
display_name = course.display_name
start = course.start
end = course.end
max_student_enrollments_allowed = course.max_student_enrollments_allowed
if isinstance(course.id, CCXLocator):
from lms.djangoapps.ccx.utils import get_ccx_from_ccx_locator
ccx = get_ccx_from_ccx_locator(course.id)
display_name = ccx.display_name
start = ccx.start
end = ccx.due
max_student_enrollments_allowed = ccx.max_student_enrollments_allowed
return cls(
version=cls.VERSION,
id=course.id,
_location=course.location,
org=course.location.org,
display_name=display_name,
display_number_with_default=course.display_number_with_default,
display_org_with_default=course.display_org_with_default,
start=start,
end=end,
advertised_start=course.advertised_start,
announcement=course.announcement,
course_image_url=course_image_url(course),
social_sharing_url=course.social_sharing_url,
certificates_display_behavior=course.certificates_display_behavior,
certificates_show_before_end=course.certificates_show_before_end,
cert_html_view_enabled=course.cert_html_view_enabled,
has_any_active_web_certificate=(get_active_web_certificate(course)
is not None),
cert_name_short=course.cert_name_short,
cert_name_long=course.cert_name_long,
lowest_passing_grade=lowest_passing_grade,
end_of_course_survey_url=course.end_of_course_survey_url,
days_early_for_beta=course.days_early_for_beta,
mobile_available=course.mobile_available,
visible_to_staff_only=course.visible_to_staff_only,
_pre_requisite_courses_json=json.dumps(
course.pre_requisite_courses),
enrollment_start=course.enrollment_start,
enrollment_end=course.enrollment_end,
enrollment_domain=course.enrollment_domain,
invitation_only=course.invitation_only,
max_student_enrollments_allowed=max_student_enrollments_allowed,
catalog_visibility=course.catalog_visibility,
short_description=CourseDetails.fetch_about_attribute(
course.id, 'short_description'),
effort=CourseDetails.fetch_about_attribute(course.id, 'effort'),
course_video_url=CourseDetails.fetch_video_url(course.id),
self_paced=course.self_paced,
)
def _create_or_update(cls, course):
"""
Creates or updates a CourseOverview object from a CourseDescriptor.
Does not touch the database, simply constructs and returns an overview
from the given course.
Arguments:
course (CourseDescriptor): any course descriptor object
Returns:
CourseOverview: created or updated overview extracted from the given course
"""
from lms.djangoapps.certificates.api import get_active_web_certificate
from openedx.core.lib.courses import course_image_url
# Workaround for a problem discovered in https://openedx.atlassian.net/browse/TNL-2806.
# If the course has a malformed grading policy such that
# course._grading_policy['GRADE_CUTOFFS'] = {}, then
# course.lowest_passing_grade will raise a ValueError.
# Work around this for now by defaulting to None.
try:
lowest_passing_grade = course.lowest_passing_grade
except ValueError:
lowest_passing_grade = None
display_name = course.display_name
start = course.start
end = course.end
max_student_enrollments_allowed = course.max_student_enrollments_allowed
if isinstance(course.id, CCXLocator):
from lms.djangoapps.ccx.utils import get_ccx_from_ccx_locator
ccx = get_ccx_from_ccx_locator(course.id)
display_name = ccx.display_name
start = ccx.start
end = ccx.due
max_student_enrollments_allowed = ccx.max_student_enrollments_allowed
course_overview = cls.objects.filter(id=course.id)
if course_overview.exists():
log.info(u'Updating course overview for %s.',
six.text_type(course.id))
course_overview = course_overview.first()
# MySQL ignores casing, but CourseKey doesn't. To prevent multiple
# courses with different cased keys from overriding each other, we'll
# check for equality here in python.
if course_overview.id != course.id:
raise CourseOverviewCaseMismatchException(
course_overview.id, course.id)
else:
log.info(u'Creating course overview for %s.',
six.text_type(course.id))
course_overview = cls()
course_overview.version = cls.VERSION
course_overview.id = course.id
course_overview._location = course.location
course_overview.org = course.location.org
course_overview.display_name = display_name
course_overview.display_number_with_default = course.display_number_with_default
course_overview.display_org_with_default = course.display_org_with_default
course_overview.start = start
# Add writes to new fields 'start_date' & 'end_date'.
course_overview.start_date = start
course_overview.end = end
course_overview.end_date = end
course_overview.advertised_start = course.advertised_start
course_overview.announcement = course.announcement
course_overview.course_image_url = course_image_url(course)
course_overview.social_sharing_url = course.social_sharing_url
course_overview.certificates_display_behavior = course.certificates_display_behavior
course_overview.certificates_show_before_end = course.certificates_show_before_end
course_overview.cert_html_view_enabled = course.cert_html_view_enabled
course_overview.has_any_active_web_certificate = (
get_active_web_certificate(course) is not None)
course_overview.cert_name_short = course.cert_name_short
course_overview.cert_name_long = course.cert_name_long
course_overview.certificate_available_date = course.certificate_available_date
course_overview.lowest_passing_grade = lowest_passing_grade
course_overview.end_of_course_survey_url = course.end_of_course_survey_url
course_overview.days_early_for_beta = course.days_early_for_beta
course_overview.mobile_available = course.mobile_available
course_overview.visible_to_staff_only = course.visible_to_staff_only
course_overview._pre_requisite_courses_json = json.dumps(
course.pre_requisite_courses)
course_overview.enrollment_start = course.enrollment_start
course_overview.enrollment_end = course.enrollment_end
course_overview.enrollment_domain = course.enrollment_domain
course_overview.invitation_only = course.invitation_only
course_overview.max_student_enrollments_allowed = max_student_enrollments_allowed
course_overview.catalog_visibility = course.catalog_visibility
course_overview.short_description = CourseDetails.fetch_about_attribute(
course.id, 'short_description')
course_overview.effort = CourseDetails.fetch_about_attribute(
course.id, 'effort')
course_overview.course_video_url = CourseDetails.fetch_video_url(
course.id)
course_overview.self_paced = course.self_paced
if not CatalogIntegration.is_enabled():
course_overview.language = course.language
return course_overview