def test_hashing(self):
base = Sentinel('base')
a_dict = {base: True}
self.assertEquals(a_dict[Sentinel('base')], True)
self.assertEquals(a_dict[base], True)
self.assertNotIn(Sentinel('foo'), a_dict)
self.assertNotIn('base', a_dict)
from xblock.exceptions import InvalidScopeError, NoSuchDefinition
from xblock.fields import Field, BlockScope, Scope, UserScope, Sentinel
from xblock.field_data import FieldData
from openedx.core.djangoapps.xblock.learning_context.manager import get_learning_context_impl
from openedx.core.djangolib.blockstore_cache import (
get_bundle_version_files_cached,
get_bundle_draft_files_cached,
)
log = logging.getLogger(__name__)
ActiveBlock = namedtuple('ActiveBlock', ['olx_hash', 'changed_fields'])
DELETED = Sentinel(
'DELETED'
) # Special value indicating a field was reset to its default value
CHILDREN_INCLUDES = Sentinel(
'CHILDREN_INCLUDES'
) # Key for a pseudo-field that stores the XBlock's children info
MAX_DEFINITIONS_LOADED = 100 # How many of the most recently used XBlocks' field data to keep in memory at max.
class BlockInstanceUniqueKey(object):
"""
An empty object used as a unique key for each XBlock instance, see
get_weak_key_for_block() and BlockstoreFieldData._get_active_block(). Every
XBlock instance will get a unique one of these keys, even if they are
otherwise identical. Its purpose is similar to `id(block)`.
"""
def test_equality(self):
base = Sentinel('base')
self.assertEquals(base, base)
self.assertEquals(base, Sentinel('base'))
self.assertNotEquals(base, Sentinel('foo'))
self.assertNotEquals(base, 'base')
import logging
from xblock.exceptions import InvalidScopeError, NoSuchDefinition
from xblock.fields import Field, BlockScope, Scope, UserScope, Sentinel
from xblock.field_data import FieldData
from openedx.core.djangolib.blockstore_cache import (
get_bundle_version_files_cached,
get_bundle_draft_files_cached,
)
log = logging.getLogger(__name__)
ActiveBlock = namedtuple('ActiveBlock', ['olx_hash', 'changed_fields'])
DELETED = Sentinel('DELETED') # Special value indicating a field was reset to its default value
MAX_DEFINITIONS_LOADED = 100 # How many of the most recently used XBlocks' field data to keep in memory at max.
class BlockInstanceUniqueKey(object):
"""
An empty object used as a unique key for each XBlock instance, see
get_weak_key_for_block() and BlockstoreFieldData._get_active_block(). Every
XBlock instance will get a unique one of these keys, even if they are
otherwise identical. Its purpose is similar to `id(block)`.
"""
def get_weak_key_for_block(block):
"""
