class TestMissingStudentModule(TestCase):
def setUp(self):
self.user = UserFactory.create(username='******')
self.desc_md = {}
self.mdc = ModelDataCache([mock_descriptor()], course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
def test_get_field_from_missing_student_module(self):
"Test that getting a field from a missing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.get, user_state_key('a_field'))
def test_set_field_in_missing_student_module(self):
"Test that setting a field in a missing StudentModule creates the student module"
self.assertEquals(0, len(self.mdc.cache))
self.assertEquals(0, StudentModule.objects.all().count())
self.kvs.set(user_state_key('a_field'), 'a_value')
self.assertEquals(1, len(self.mdc.cache))
self.assertEquals(1, StudentModule.objects.all().count())
student_module = StudentModule.objects.all()[0]
self.assertEquals({'a_field': 'a_value'}, json.loads(student_module.state))
self.assertEquals(self.user, student_module.student)
self.assertEquals(location('def_id').url(), student_module.module_state_key)
self.assertEquals(course_id, student_module.course_id)
def test_delete_field_from_missing_student_module(self):
"Test that deleting a field from a missing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.delete, user_state_key('a_field'))
def test_has_field_for_missing_student_module(self):
"Test that `has` returns False for missing StudentModules"
self.assertFalse(self.kvs.has(user_state_key('a_field')))
class TestDescriptorFallback(TestCase):
def setUp(self):
self.desc_md = {
'field_a': 'content',
'field_b': 'settings',
}
self.kvs = LmsKeyValueStore(self.desc_md, None)
def test_get_from_descriptor(self):
self.assertEquals('content', self.kvs.get(content_key('field_a')))
self.assertEquals('settings', self.kvs.get(settings_key('field_b')))
def test_write_to_descriptor(self):
self.assertRaises(InvalidWriteError, self.kvs.set, content_key('field_a'), 'foo')
self.assertEquals('content', self.desc_md['field_a'])
self.assertRaises(InvalidWriteError, self.kvs.set, settings_key('field_b'), 'foo')
self.assertEquals('settings', self.desc_md['field_b'])
self.assertRaises(InvalidWriteError, self.kvs.set_many, {content_key('field_a'): 'foo'})
self.assertEquals('content', self.desc_md['field_a'])
self.assertRaises(InvalidWriteError, self.kvs.delete, content_key('field_a'))
self.assertEquals('content', self.desc_md['field_a'])
self.assertRaises(InvalidWriteError, self.kvs.delete, settings_key('field_b'))
self.assertEquals('settings', self.desc_md['field_b'])
class TestDescriptorFallback(TestCase):
def setUp(self):
self.desc_md = {
'field_a': 'content',
'field_b': 'settings',
}
self.kvs = LmsKeyValueStore(self.desc_md, None)
def test_get_from_descriptor(self):
self.assertEquals('content', self.kvs.get(content_key('field_a')))
self.assertEquals('settings', self.kvs.get(settings_key('field_b')))
def test_write_to_descriptor(self):
self.assertRaises(InvalidWriteError, self.kvs.set,
content_key('field_a'), 'foo')
self.assertEquals('content', self.desc_md['field_a'])
self.assertRaises(InvalidWriteError, self.kvs.set,
settings_key('field_b'), 'foo')
self.assertEquals('settings', self.desc_md['field_b'])
self.assertRaises(InvalidWriteError, self.kvs.delete,
content_key('field_a'))
self.assertEquals('content', self.desc_md['field_a'])
self.assertRaises(InvalidWriteError, self.kvs.delete,
settings_key('field_b'))
self.assertEquals('settings', self.desc_md['field_b'])
def test_invalid_scopes(self):
for scope in (Scope(user=True, block=BlockScope.DEFINITION),
Scope(user=False, block=BlockScope.TYPE),
Scope(user=False, block=BlockScope.ALL)):
self.assertRaises(InvalidScopeError, self.kvs.get, LmsKeyValueStore.Key(scope, None, None, 'field'))
self.assertRaises(InvalidScopeError, self.kvs.set, LmsKeyValueStore.Key(scope, None, None, 'field'), 'value')
self.assertRaises(InvalidScopeError, self.kvs.delete, LmsKeyValueStore.Key(scope, None, None, 'field'))
self.assertRaises(InvalidScopeError, self.kvs.has, LmsKeyValueStore.Key(scope, None, None, 'field'))
def setUp(self):
field_storage = self.factory.create()
if hasattr(field_storage, 'student'):
self.user = field_storage.student
else:
self.user = UserFactory.create()
self.desc_md = {}
self.mdc = ModelDataCache([mock_descriptor([mock_field(self.scope, 'existing_field')])], course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
def setUp(self):
self.desc_md = {}
student_module = StudentModuleFactory(
state=json.dumps({'a_field': 'a_value'}))
self.user = student_module.student
self.mdc = ModelDataCache(
[mock_descriptor([mock_field(Scope.user_state, 'a_field')])],
course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
class TestStudentModuleStorage(TestCase):
def setUp(self):
self.desc_md = {}
student_module = StudentModuleFactory(
state=json.dumps({'a_field': 'a_value'}))
self.user = student_module.student
self.mdc = ModelDataCache(
[mock_descriptor([mock_field(Scope.user_state, 'a_field')])],
course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
def test_get_existing_field(self):
"Test that getting an existing field in an existing StudentModule works"
self.assertEquals('a_value', self.kvs.get(user_state_key('a_field')))
def test_get_missing_field(self):
"Test that getting a missing field from an existing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.get,
user_state_key('not_a_field'))
def test_set_existing_field(self):
"Test that setting an existing user_state field changes the value"
self.kvs.set(user_state_key('a_field'), 'new_value')
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({'a_field': 'new_value'},
json.loads(StudentModule.objects.all()[0].state))
def test_set_missing_field(self):
"Test that setting a new user_state field changes the value"
self.kvs.set(user_state_key('not_a_field'), 'new_value')
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({
'a_field': 'a_value',
'not_a_field': 'new_value'
}, json.loads(StudentModule.objects.all()[0].state))
def test_delete_existing_field(self):
"Test that deleting an existing field removes it from the StudentModule"
self.kvs.delete(user_state_key('a_field'))
self.assertEquals(1, StudentModule.objects.all().count())
self.assertRaises(KeyError, self.kvs.get,
user_state_key('not_a_field'))
def test_delete_missing_field(self):
"Test that deleting a missing field from an existing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.delete,
user_state_key('not_a_field'))
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({'a_field': 'a_value'},
json.loads(StudentModule.objects.all()[0].state))
def test_has_existing_field(self):
"Test that `has` returns True for existing fields in StudentModules"
self.assertTrue(self.kvs.has(user_state_key('a_field')))
def test_has_missing_field(self):
"Test that `has` returns False for missing fields in StudentModule"
self.assertFalse(self.kvs.has(user_state_key('not_a_field')))
class StorageTestBase(object):
factory = None
scope = None
key_factory = None
storage_class = None
def setUp(self):
field_storage = self.factory.create()
if hasattr(field_storage, 'student'):
self.user = field_storage.student
else:
self.user = UserFactory.create()
self.desc_md = {}
self.mdc = ModelDataCache([mock_descriptor([mock_field(self.scope, 'existing_field')])], course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
def test_get_existing_field(self):
"Test that getting an existing field in an existing Storage Field works"
self.assertEquals('old_value', self.kvs.get(self.key_factory('existing_field')))
def test_get_missing_field(self):
"Test that getting a missing field from an existing Storage Field raises a KeyError"
self.assertRaises(KeyError, self.kvs.get, self.key_factory('missing_field'))
def test_set_existing_field(self):
"Test that setting an existing field changes the value"
self.kvs.set(self.key_factory('existing_field'), 'new_value')
self.assertEquals(1, self.storage_class.objects.all().count())
self.assertEquals('new_value', json.loads(self.storage_class.objects.all()[0].value))
def test_set_missing_field(self):
"Test that setting a new field changes the value"
self.kvs.set(self.key_factory('missing_field'), 'new_value')
self.assertEquals(2, self.storage_class.objects.all().count())
self.assertEquals('old_value', json.loads(self.storage_class.objects.get(field_name='existing_field').value))
self.assertEquals('new_value', json.loads(self.storage_class.objects.get(field_name='missing_field').value))
def test_delete_existing_field(self):
"Test that deleting an existing field removes it"
self.kvs.delete(self.key_factory('existing_field'))
self.assertEquals(0, self.storage_class.objects.all().count())
def test_delete_missing_field(self):
"Test that deleting a missing field from an existing Storage Field raises a KeyError"
self.assertRaises(KeyError, self.kvs.delete, self.key_factory('missing_field'))
self.assertEquals(1, self.storage_class.objects.all().count())
def test_has_existing_field(self):
"Test that `has` returns True for an existing Storage Field"
self.assertTrue(self.kvs.has(self.key_factory('existing_field')))
def test_has_missing_field(self):
"Test that `has` return False for an existing Storage Field"
self.assertFalse(self.kvs.has(self.key_factory('missing_field')))
def setUp(self):
self.desc_md = {}
self.user = UserFactory.create(username='******')
self.mdc = ModelDataCache(
[mock_descriptor([mock_field(Scope.user_state, 'a_field')])],
course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
class TestStudentModuleStorage(TestCase):
def setUp(self):
self.desc_md = {}
student_module = StudentModuleFactory(state=json.dumps({'a_field': 'a_value'}))
self.user = student_module.student
self.mdc = ModelDataCache([mock_descriptor([mock_field(Scope.user_state, 'a_field')])], course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
def test_get_existing_field(self):
"Test that getting an existing field in an existing StudentModule works"
self.assertEquals('a_value', self.kvs.get(user_state_key('a_field')))
def test_get_missing_field(self):
"Test that getting a missing field from an existing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.get, user_state_key('not_a_field'))
def test_set_existing_field(self):
"Test that setting an existing user_state field changes the value"
self.kvs.set(user_state_key('a_field'), 'new_value')
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({'a_field': 'new_value'}, json.loads(StudentModule.objects.all()[0].state))
def test_set_missing_field(self):
"Test that setting a new user_state field changes the value"
self.kvs.set(user_state_key('not_a_field'), 'new_value')
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({'a_field': 'a_value', 'not_a_field': 'new_value'}, json.loads(StudentModule.objects.all()[0].state))
def test_delete_existing_field(self):
"Test that deleting an existing field removes it from the StudentModule"
self.kvs.delete(user_state_key('a_field'))
self.assertEquals(1, StudentModule.objects.all().count())
self.assertRaises(KeyError, self.kvs.get, user_state_key('not_a_field'))
def test_delete_missing_field(self):
"Test that deleting a missing field from an existing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.delete, user_state_key('not_a_field'))
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({'a_field': 'a_value'}, json.loads(StudentModule.objects.all()[0].state))
def test_has_existing_field(self):
"Test that `has` returns True for existing fields in StudentModules"
self.assertTrue(self.kvs.has(user_state_key('a_field')))
def test_has_missing_field(self):
"Test that `has` returns False for missing fields in StudentModule"
self.assertFalse(self.kvs.has(user_state_key('not_a_field')))
def xblock_model_data(descriptor):
return DbModel(
LmsKeyValueStore(descriptor._model_data, model_data_cache),
descriptor.module_class, user.id,
LmsUsage(descriptor.location, descriptor.location))
def setUp(self):
self.desc_md = {}
student_module = StudentModuleFactory(state=json.dumps({'a_field': 'a_value'}))
self.user = student_module.student
self.mdc = ModelDataCache([mock_descriptor([mock_field(Scope.user_state, 'a_field')])], course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
class TestStudentModuleStorage(TestCase):
def setUp(self):
self.desc_md = {}
student_module = StudentModuleFactory(state=json.dumps({'a_field': 'a_value', 'b_field': 'b_value'}))
self.user = student_module.student
self.mdc = ModelDataCache([mock_descriptor([mock_field(Scope.user_state, 'a_field')])], course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
def test_get_existing_field(self):
"Test that getting an existing field in an existing StudentModule works"
self.assertEquals('a_value', self.kvs.get(user_state_key('a_field')))
def test_get_missing_field(self):
"Test that getting a missing field from an existing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.get, user_state_key('not_a_field'))
def test_set_existing_field(self):
"Test that setting an existing user_state field changes the value"
self.kvs.set(user_state_key('a_field'), 'new_value')
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({'b_field': 'b_value', 'a_field': 'new_value'}, json.loads(StudentModule.objects.all()[0].state))
def test_set_missing_field(self):
"Test that setting a new user_state field changes the value"
self.kvs.set(user_state_key('not_a_field'), 'new_value')
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({'b_field': 'b_value', 'a_field': 'a_value', 'not_a_field': 'new_value'}, json.loads(StudentModule.objects.all()[0].state))
def test_delete_existing_field(self):
"Test that deleting an existing field removes it from the StudentModule"
self.kvs.delete(user_state_key('a_field'))
self.assertEquals(1, StudentModule.objects.all().count())
self.assertRaises(KeyError, self.kvs.get, user_state_key('not_a_field'))
def test_delete_missing_field(self):
"Test that deleting a missing field from an existing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.delete, user_state_key('not_a_field'))
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({'b_field': 'b_value', 'a_field': 'a_value'}, json.loads(StudentModule.objects.all()[0].state))
def test_has_existing_field(self):
"Test that `has` returns True for existing fields in StudentModules"
self.assertTrue(self.kvs.has(user_state_key('a_field')))
def test_has_missing_field(self):
"Test that `has` returns False for missing fields in StudentModule"
self.assertFalse(self.kvs.has(user_state_key('not_a_field')))
def construct_kv_dict(self):
"""Construct a kv_dict that can be passed to set_many"""
key1 = user_state_key('field_a')
key2 = user_state_key('field_b')
new_value = 'new value'
newer_value = 'newer value'
return {key1: new_value, key2: newer_value}
def test_set_many(self):
"Test setting many fields that are scoped to Scope.user_state"
kv_dict = self.construct_kv_dict()
self.kvs.set_many(kv_dict)
for key in kv_dict:
self.assertEquals(self.kvs.get(key), kv_dict[key])
def test_set_many_failure(self):
"Test failures when setting many fields that are scoped to Scope.user_state"
kv_dict = self.construct_kv_dict()
# because we're patching the underlying save, we need to ensure the
# fields are in the cache
for key in kv_dict:
self.kvs.set(key, 'test_value')
with patch('django.db.models.Model.save', side_effect=DatabaseError):
with self.assertRaises(KeyValueMultiSaveError) as exception_context:
self.kvs.set_many(kv_dict)
self.assertEquals(len(exception_context.exception.saved_field_names), 0)
class StorageTestBase(object):
"""
A base class for that gets subclassed when testing each of the scopes.
"""
# Disable pylint warnings that arise because of the way the child classes call
# this base class -- pylint's static analysis can't keep up with it.
# pylint: disable=E1101, E1102
factory = None
scope = None
key_factory = None
storage_class = None
def setUp(self):
field_storage = self.factory.create()
if hasattr(field_storage, 'student'):
self.user = field_storage.student
else:
self.user = UserFactory.create()
self.desc_md = {}
self.mock_descriptor = mock_descriptor([
mock_field(self.scope, 'existing_field'),
mock_field(self.scope, 'other_existing_field')
])
self.mdc = ModelDataCache([self.mock_descriptor], course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
def test_set_and_get_existing_field(self):
self.kvs.set(self.key_factory('existing_field'), 'test_value')
self.assertEquals('test_value',
self.kvs.get(self.key_factory('existing_field')))
def test_get_existing_field(self):
"Test that getting an existing field in an existing Storage Field works"
self.assertEquals('old_value',
self.kvs.get(self.key_factory('existing_field')))
def test_get_missing_field(self):
"Test that getting a missing field from an existing Storage Field raises a KeyError"
self.assertRaises(KeyError, self.kvs.get,
self.key_factory('missing_field'))
def test_set_existing_field(self):
"Test that setting an existing field changes the value"
self.kvs.set(self.key_factory('existing_field'), 'new_value')
self.assertEquals(1, self.storage_class.objects.all().count())
self.assertEquals(
'new_value', json.loads(self.storage_class.objects.all()[0].value))
def test_set_missing_field(self):
"Test that setting a new field changes the value"
self.kvs.set(self.key_factory('missing_field'), 'new_value')
self.assertEquals(2, self.storage_class.objects.all().count())
self.assertEquals(
'old_value',
json.loads(
self.storage_class.objects.get(
field_name='existing_field').value))
self.assertEquals(
'new_value',
json.loads(
self.storage_class.objects.get(
field_name='missing_field').value))
def test_delete_existing_field(self):
"Test that deleting an existing field removes it"
self.kvs.delete(self.key_factory('existing_field'))
self.assertEquals(0, self.storage_class.objects.all().count())
def test_delete_missing_field(self):
"Test that deleting a missing field from an existing Storage Field raises a KeyError"
self.assertRaises(KeyError, self.kvs.delete,
self.key_factory('missing_field'))
self.assertEquals(1, self.storage_class.objects.all().count())
def test_has_existing_field(self):
"Test that `has` returns True for an existing Storage Field"
self.assertTrue(self.kvs.has(self.key_factory('existing_field')))
def test_has_missing_field(self):
"Test that `has` return False for an existing Storage Field"
self.assertFalse(self.kvs.has(self.key_factory('missing_field')))
def construct_kv_dict(self):
"""Construct a kv_dict that can be passed to set_many"""
key1 = self.key_factory('existing_field')
key2 = self.key_factory('other_existing_field')
new_value = 'new value'
newer_value = 'newer value'
return {key1: new_value, key2: newer_value}
def test_set_many(self):
"""Test that setting many regular fields at the same time works"""
kv_dict = self.construct_kv_dict()
self.kvs.set_many(kv_dict)
for key in kv_dict:
self.assertEquals(self.kvs.get(key), kv_dict[key])
def test_set_many_failure(self):
"""Test that setting many regular fields with a DB error """
kv_dict = self.construct_kv_dict()
for key in kv_dict:
self.kvs.set(key, 'test value')
with patch('django.db.models.Model.save',
side_effect=[None, DatabaseError]):
with self.assertRaises(
KeyValueMultiSaveError) as exception_context:
self.kvs.set_many(kv_dict)
exception = exception_context.exception
self.assertEquals(len(exception.saved_field_names), 1)
self.assertEquals(exception.saved_field_names[0], 'existing_field')
def setUp(self):
self.desc_md = {
'field_a': 'content',
'field_b': 'settings',
}
self.kvs = LmsKeyValueStore(self.desc_md, None)
def setUp(self):
self.user = UserFactory.create(username='******')
self.desc_md = {}
self.mdc = ModelDataCache([mock_descriptor()], course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
class StorageTestBase(object):
"""
A base class for that gets subclassed when testing each of the scopes.
"""
# Disable pylint warnings that arise because of the way the child classes call
# this base class -- pylint's static analysis can't keep up with it.
# pylint: disable=E1101, E1102
factory = None
scope = None
key_factory = None
storage_class = None
def setUp(self):
field_storage = self.factory.create()
if hasattr(field_storage, 'student'):
self.user = field_storage.student
else:
self.user = UserFactory.create()
self.desc_md = {}
self.mock_descriptor = mock_descriptor([
mock_field(self.scope, 'existing_field'),
mock_field(self.scope, 'other_existing_field')])
self.mdc = ModelDataCache([self.mock_descriptor], course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
def test_set_and_get_existing_field(self):
self.kvs.set(self.key_factory('existing_field'), 'test_value')
self.assertEquals('test_value', self.kvs.get(self.key_factory('existing_field')))
def test_get_existing_field(self):
"Test that getting an existing field in an existing Storage Field works"
self.assertEquals('old_value', self.kvs.get(self.key_factory('existing_field')))
def test_get_missing_field(self):
"Test that getting a missing field from an existing Storage Field raises a KeyError"
self.assertRaises(KeyError, self.kvs.get, self.key_factory('missing_field'))
def test_set_existing_field(self):
"Test that setting an existing field changes the value"
self.kvs.set(self.key_factory('existing_field'), 'new_value')
self.assertEquals(1, self.storage_class.objects.all().count())
self.assertEquals('new_value', json.loads(self.storage_class.objects.all()[0].value))
def test_set_missing_field(self):
"Test that setting a new field changes the value"
self.kvs.set(self.key_factory('missing_field'), 'new_value')
self.assertEquals(2, self.storage_class.objects.all().count())
self.assertEquals('old_value', json.loads(self.storage_class.objects.get(field_name='existing_field').value))
self.assertEquals('new_value', json.loads(self.storage_class.objects.get(field_name='missing_field').value))
def test_delete_existing_field(self):
"Test that deleting an existing field removes it"
self.kvs.delete(self.key_factory('existing_field'))
self.assertEquals(0, self.storage_class.objects.all().count())
def test_delete_missing_field(self):
"Test that deleting a missing field from an existing Storage Field raises a KeyError"
self.assertRaises(KeyError, self.kvs.delete, self.key_factory('missing_field'))
self.assertEquals(1, self.storage_class.objects.all().count())
def test_has_existing_field(self):
"Test that `has` returns True for an existing Storage Field"
self.assertTrue(self.kvs.has(self.key_factory('existing_field')))
def test_has_missing_field(self):
"Test that `has` return False for an existing Storage Field"
self.assertFalse(self.kvs.has(self.key_factory('missing_field')))
def construct_kv_dict(self):
"""Construct a kv_dict that can be passed to set_many"""
key1 = self.key_factory('existing_field')
key2 = self.key_factory('other_existing_field')
new_value = 'new value'
newer_value = 'newer value'
return {key1: new_value, key2: newer_value}
def test_set_many(self):
"""Test that setting many regular fields at the same time works"""
kv_dict = self.construct_kv_dict()
self.kvs.set_many(kv_dict)
for key in kv_dict:
self.assertEquals(self.kvs.get(key), kv_dict[key])
def test_set_many_failure(self):
"""Test that setting many regular fields with a DB error """
kv_dict = self.construct_kv_dict()
for key in kv_dict:
self.kvs.set(key, 'test value')
with patch('django.db.models.Model.save', side_effect=[None, DatabaseError]):
with self.assertRaises(KeyValueMultiSaveError) as exception_context:
self.kvs.set_many(kv_dict)
exception = exception_context.exception
self.assertEquals(len(exception.saved_field_names), 1)
self.assertEquals(exception.saved_field_names[0], 'existing_field')
def setUp(self):
self.desc_md = {
'field_a': 'content',
'field_b': 'settings',
}
self.kvs = LmsKeyValueStore(self.desc_md, None)
class TestStudentModuleStorage(TestCase):
def setUp(self):
self.desc_md = {}
student_module = StudentModuleFactory(
state=json.dumps({
'a_field': 'a_value',
'b_field': 'b_value'
}))
self.user = student_module.student
self.mdc = ModelDataCache(
[mock_descriptor([mock_field(Scope.user_state, 'a_field')])],
course_id, self.user)
self.kvs = LmsKeyValueStore(self.desc_md, self.mdc)
def test_get_existing_field(self):
"Test that getting an existing field in an existing StudentModule works"
self.assertEquals('a_value', self.kvs.get(user_state_key('a_field')))
def test_get_missing_field(self):
"Test that getting a missing field from an existing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.get,
user_state_key('not_a_field'))
def test_set_existing_field(self):
"Test that setting an existing user_state field changes the value"
self.kvs.set(user_state_key('a_field'), 'new_value')
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({
'b_field': 'b_value',
'a_field': 'new_value'
}, json.loads(StudentModule.objects.all()[0].state))
def test_set_missing_field(self):
"Test that setting a new user_state field changes the value"
self.kvs.set(user_state_key('not_a_field'), 'new_value')
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals(
{
'b_field': 'b_value',
'a_field': 'a_value',
'not_a_field': 'new_value'
}, json.loads(StudentModule.objects.all()[0].state))
def test_delete_existing_field(self):
"Test that deleting an existing field removes it from the StudentModule"
self.kvs.delete(user_state_key('a_field'))
self.assertEquals(1, StudentModule.objects.all().count())
self.assertRaises(KeyError, self.kvs.get,
user_state_key('not_a_field'))
def test_delete_missing_field(self):
"Test that deleting a missing field from an existing StudentModule raises a KeyError"
self.assertRaises(KeyError, self.kvs.delete,
user_state_key('not_a_field'))
self.assertEquals(1, StudentModule.objects.all().count())
self.assertEquals({
'b_field': 'b_value',
'a_field': 'a_value'
}, json.loads(StudentModule.objects.all()[0].state))
def test_has_existing_field(self):
"Test that `has` returns True for existing fields in StudentModules"
self.assertTrue(self.kvs.has(user_state_key('a_field')))
def test_has_missing_field(self):
"Test that `has` returns False for missing fields in StudentModule"
self.assertFalse(self.kvs.has(user_state_key('not_a_field')))
def construct_kv_dict(self):
"""Construct a kv_dict that can be passed to set_many"""
key1 = user_state_key('field_a')
key2 = user_state_key('field_b')
new_value = 'new value'
newer_value = 'newer value'
return {key1: new_value, key2: newer_value}
def test_set_many(self):
"Test setting many fields that are scoped to Scope.user_state"
kv_dict = self.construct_kv_dict()
self.kvs.set_many(kv_dict)
for key in kv_dict:
self.assertEquals(self.kvs.get(key), kv_dict[key])
def test_set_many_failure(self):
"Test failures when setting many fields that are scoped to Scope.user_state"
kv_dict = self.construct_kv_dict()
# because we're patching the underlying save, we need to ensure the
# fields are in the cache
for key in kv_dict:
self.kvs.set(key, 'test_value')
with patch('django.db.models.Model.save', side_effect=DatabaseError):
with self.assertRaises(
KeyValueMultiSaveError) as exception_context:
self.kvs.set_many(kv_dict)
self.assertEquals(len(exception_context.exception.saved_field_names),
0)