def next_calculation(self, candle):
if self.get_datawindow() is not None:
self.value[
'moving_average_envelope_center'] = indicator.center_band(
self.get_close(), self.params['period'])[-1]
self.value['moving_average_envelope_upper'] = indicator.upper_band(
self.get_close(), self.params['period'],
self.params['env_percentage'])[-1]
self.value['moving_average_envelope_lower'] = indicator.lower_band(
self.get_close(), self.params['period'],
self.params['env_percentage'])[-1]
def test_center_band_invalid_period(self):
period = 128
with self.assertRaises(Exception) as cm:
moving_average_envelope.center_band(self.data, period)
expected = "Error: data_len < period"
self.assertEqual(str(cm.exception), expected)
def test_center_band_period_6(self):
period = 6
cb = moving_average_envelope.center_band(self.data, period)
np.testing.assert_array_equal(cb, self.center_band_period_6_expected)