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edx-platform/lms/djangoapps/course_api/blocks/tests/test_serializers.py

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8.1 KiB
Python

"""
Tests for Course Blocks serializers
"""
from unittest.mock import MagicMock
from common.djangoapps.student.roles import CourseStaffRole
from common.djangoapps.student.tests.factories import UserFactory
from lms.djangoapps.course_blocks.api import get_course_block_access_transformers, get_course_blocks
from openedx.core.djangoapps.content.block_structure.transformers import BlockStructureTransformers
from xmodule.modulestore import ModuleStoreEnum
from xmodule.modulestore.tests.django_utils import SharedModuleStoreTestCase
from xmodule.modulestore.tests.factories import ToyCourseFactory
from ..serializers import BlockDictSerializer, BlockSerializer
from ..transformers.blocks_api import BlocksAPITransformer
from .helpers import deserialize_usage_key
class TestBlockSerializerBase(SharedModuleStoreTestCase):
"""
Base class for testing BlockSerializer and BlockDictSerializer
"""
@classmethod
def setUpClass(cls):
super().setUpClass()
cls.course = ToyCourseFactory.create()
# Hide the html block
key = cls.course.id.make_usage_key('html', 'secret:toylab')
cls.html_block = cls.store.get_item(key)
cls.html_block.visible_to_staff_only = True
cls.store.update_item(cls.html_block, ModuleStoreEnum.UserID.test)
def setUp(self):
super().setUp()
self.user = UserFactory.create()
blocks_api_transformer = BlocksAPITransformer(
block_types_to_count=['video'],
requested_student_view_data=['video'],
)
self.transformers = BlockStructureTransformers(
get_course_block_access_transformers(self.user) + [blocks_api_transformer]
)
self.block_structure = get_course_blocks(
self.user,
self.course.location,
self.transformers,
)
self.serializer_context = {
'request': MagicMock(),
'block_structure': self.block_structure,
'requested_fields': ['type'],
}
def assert_basic_block(self, block_key_string, serialized_block):
"""
Verifies the given serialized_block when basic fields are requested.
"""
block_key = deserialize_usage_key(block_key_string, self.course.id)
assert self.block_structure.get_xblock_field(block_key, 'category') == serialized_block['type']
assert set(serialized_block.keys()) == {'id', 'block_id', 'type', 'lms_web_url', 'student_view_url'}
def add_additional_requested_fields(self, context=None):
"""
Adds additional fields to the requested_fields context for the serializer.
"""
if context is None:
context = self.serializer_context
context['requested_fields'].extend([
'children',
'display_name',
'graded',
'format',
'block_counts',
'student_view_data',
'student_view_multi_device',
'lti_url',
'visible_to_staff_only',
])
def assert_extended_block(self, serialized_block):
"""
Verifies the given serialized_block when additional fields are requested.
"""
assert {'id', 'type', 'lms_web_url', 'student_view_url', 'display_name', 'graded', 'student_view_multi_device',
'lti_url', 'visible_to_staff_only'} <= set(serialized_block.keys())
# video blocks should have student_view_data
if serialized_block['type'] == 'video':
assert 'student_view_data' in serialized_block
# html blocks should have student_view_multi_device set to True
if serialized_block['type'] == 'html':
assert 'student_view_multi_device' in serialized_block
assert serialized_block['student_view_multi_device']
# chapters with video should have block_counts
if serialized_block['type'] == 'chapter':
if serialized_block['display_name'] not in ('poll_test', 'handout_container'):
assert 'block_counts' in serialized_block
else:
assert 'block_counts' not in serialized_block
def create_staff_context(self):
"""
Create staff user and course blocks accessible by that user
"""
# Create a staff user to be able to test visible_to_staff_only
staff_user = UserFactory.create()
CourseStaffRole(self.course.location.course_key).add_users(staff_user)
block_structure = get_course_blocks(
staff_user,
self.course.location,
self.transformers,
)
return {
'request': MagicMock(),
'block_structure': block_structure,
'requested_fields': ['type'],
}
def assert_staff_fields(self, serialized_block):
"""
Test fields accessed by a staff user
"""
if serialized_block['id'] == str(self.html_block.location):
assert serialized_block['visible_to_staff_only']
else:
assert not serialized_block['visible_to_staff_only']
class TestBlockSerializer(TestBlockSerializerBase):
"""
Tests the BlockSerializer class, which returns a list of blocks.
"""
def create_serializer(self, context=None):
"""
creates a BlockSerializer
"""
if context is None:
context = self.serializer_context
return BlockSerializer(
context['block_structure'], many=True, context=context,
)
def test_basic(self):
serializer = self.create_serializer()
for serialized_block in serializer.data:
self.assert_basic_block(serialized_block['id'], serialized_block)
assert len(serializer.data) == 28
def test_additional_requested_fields(self):
self.add_additional_requested_fields()
serializer = self.create_serializer()
for serialized_block in serializer.data:
self.assert_extended_block(serialized_block)
assert len(serializer.data) == 28
def test_staff_fields(self):
"""
Test fields accessed by a staff user
"""
context = self.create_staff_context()
self.add_additional_requested_fields(context)
serializer = self.create_serializer(context)
for serialized_block in serializer.data:
self.assert_extended_block(serialized_block)
self.assert_staff_fields(serialized_block)
assert len(serializer.data) == 29
class TestBlockDictSerializer(TestBlockSerializerBase):
"""
Tests the BlockDictSerializer class, which returns a dict of blocks key-ed by its block_key.
"""
def create_serializer(self, context=None):
"""
creates a BlockDictSerializer
"""
if context is None:
context = self.serializer_context
return BlockDictSerializer(
context['block_structure'], many=False, context=context,
)
def test_basic(self):
serializer = self.create_serializer()
# verify root
assert serializer.data['root'] == str(self.block_structure.root_block_usage_key)
# verify blocks
for block_key_string, serialized_block in serializer.data['blocks'].items():
assert serialized_block['id'] == block_key_string
self.assert_basic_block(block_key_string, serialized_block)
assert len(serializer.data['blocks']) == 28
def test_additional_requested_fields(self):
self.add_additional_requested_fields()
serializer = self.create_serializer()
for serialized_block in serializer.data['blocks'].values():
self.assert_extended_block(serialized_block)
assert len(serializer.data['blocks']) == 28
def test_staff_fields(self):
"""
Test fields accessed by a staff user
"""
context = self.create_staff_context()
self.add_additional_requested_fields(context)
serializer = self.create_serializer(context)
for serialized_block in serializer.data['blocks'].values():
self.assert_extended_block(serialized_block)
self.assert_staff_fields(serialized_block)
assert len(serializer.data['blocks']) == 29