def test_build_model_from_events_no_first_create_event(
read_database: ReadDatabase):
with pytest.raises(AssertionError):
read_database.build_model_from_events([{
"type": MagicMock(),
"data": MagicMock()
}])
def test_build_model_from_events_unknown_event(read_database: ReadDatabase):
with pytest.raises(BadCodingError):
read_database.build_model_from_events([
{
"type": EVENT_TYPES.CREATE,
"data": MagicMock()
},
{
"type": MagicMock(),
"data": MagicMock()
},
])
def test_build_model_from_events_delete_fields_event(
read_database: ReadDatabase):
field = MagicMock()
base_model = {field: MagicMock}
delete_fields_event = [field]
result = read_database.build_model_from_events([
{
"type": EVENT_TYPES.CREATE,
"data": base_model
},
{
"type": EVENT_TYPES.DELETE_FIELDS,
"data": delete_fields_event,
"position": 0,
},
])
assert result == {META_POSITION: 0}
def test_build_model_from_events_update_event(read_database: ReadDatabase):
base_model = MagicMock()
base_model.update = u = MagicMock()
update_event = MagicMock()
result = read_database.build_model_from_events([
{
"type": EVENT_TYPES.CREATE,
"data": base_model
},
{
"type": EVENT_TYPES.UPDATE,
"data": update_event,
"position": 0
},
])
u.assert_called_with(update_event)
assert result == base_model
def test_build_model_from_events_no_events(read_database: ReadDatabase):
with pytest.raises(BadCodingError):
read_database.build_model_from_events(None)
with pytest.raises(BadCodingError):
read_database.build_model_from_events([])
