def test_raise_exception_if_date_range_does_not_contain_start_and_end_date():
store = TopLevelTickStore(Mock())
dr = DateRange(start=None, end=None)
with pytest.raises(Exception) as e:
store._get_library_metadata(dr)
assert "The date range {0} must contain a start and end date".format(
dr) in str(e)
def test_slice_list_of_dicts(start, end, expected_start_index, expected_end_index):
top_level_tick_store = TopLevelTickStore(Mock())
dates = list(rrule(DAILY, count=5, dtstart=dt(2010, 1, 1, tzinfo=utc), interval=2))
data = [{'index': date, 'A': val} for date, val in zip(dates, range(5))]
expected = data[expected_start_index:expected_end_index]
result = top_level_tick_store._slice(data, start, end)
assert expected == result
def test_slice_pandas_dataframe(start, end, expected_start_index, expected_end_index):
top_level_tick_store = TopLevelTickStore(Mock())
dates = pd.date_range('20100101', periods=5, freq='2D')
data = pd.DataFrame(np.random.randn(5, 4), index=dates, columns=list('ABCD'))
expected = data.iloc[expected_start_index:expected_end_index]
result = top_level_tick_store._slice(data, start, end)
assert_frame_equal(expected, result), '{}\n{}'.format(expected, result)
def test_raise_exception_and_log_an_error_if_an_invalid_library_name_is_added():
arctic_lib = MagicMock()
arctic_lib.arctic.__getitem__.side_effect = Exception()
store = TopLevelTickStore(arctic_lib)
with patch("arctic.tickstore.toplevel.logger") as mock_logger:
with pytest.raises(Exception):
store.add(None, "blah")
mock_logger.error.assert_called_once_with("Could not load library")
def test_slice_raises():
m = TopLevelTickStore(Mock())
with pytest.raises(UnhandledDtypeException) as e:
m._slice("abc", 1, 2)
assert ("Can't persist type" in str(e))
def test_raise_exception_if_daterange_is_not_provided():
store = TopLevelTickStore(Mock())
with pytest.raises(Exception) as e:
store._get_library_metadata(None)
assert "A date range must be provided" in str(e)
