def test_segment_type_and_slice_1(self):
# Unmasked fast Airspeed at the beginning of the data which is difficult
# to validate should be ignored in segment type identification.
speed_array = load_compressed(
os.path.join(test_data_path, 'segment_type_and_slice_1_speed.npz'))
heading_array = load_compressed(
os.path.join(test_data_path,
'segment_type_and_slice_1_heading.npz'))
eng_arrays = load_compressed(
os.path.join(test_data_path,
'segment_type_and_slice_1_eng_arrays.npz'))
aircraft_info = {'Aircraft Type': 'aeroplane'}
thresholds = {
'hash_min_samples': 64,
'speed_threshold': 80,
'min_split_duration': 100,
'min_duration': 180
}
hdf = mock.Mock()
hdf.superframe_present = False
segment_type, segment, array_start_secs = _segment_type_and_slice(
speed_array, 1, heading_array, 1, 0, 11824, eng_arrays,
aircraft_info, thresholds, hdf)
self.assertEqual(segment_type, 'START_AND_STOP')
self.assertEqual(segment, slice(0, 11824))
self.assertEqual(array_start_secs, 0)
def test_segment_type_and_slice_2(self):
# Gear on Ground is used instead of Eng (1) Nr
speed_array = load_compressed(
os.path.join(test_data_path, 'segment_type_and_slice_2_speed.npz'))
heading_array = load_compressed(
os.path.join(test_data_path,
'segment_type_and_slice_2_heading.npz'))
eng_arrays = load_compressed(
os.path.join(test_data_path,
'segment_type_and_slice_2_eng_arrays.npz'))
aircraft_info = {'Aircraft Type': 'helicopter'}
thresholds = {
'hash_min_samples': 64,
'speed_threshold': 90,
'min_split_duration': 100,
'min_duration': 180
}
def get(key):
array = load_compressed(
os.path.join(test_data_path,
'segment_type_and_slice_2_gog.npz'))
return Parameter('Gear on Ground', array=array)
hdf = mock.MagicMock()
hdf.get.side_effect = get
hdf.superframe_present = False
segment_type, segment, array_start_secs = _segment_type_and_slice(
speed_array, 1, heading_array, 1, 0, 5736, eng_arrays,
aircraft_info, thresholds, hdf)
self.assertEqual(segment_type, 'START_AND_STOP')
self.assertEqual(segment, slice(0, 5736))
self.assertEqual(array_start_secs, 0)
def test__get_normalised_split_params(self):
hdf = mock.Mock()
hdf.get = mock.Mock()
hdf.get.return_value = None
hdf.reliable_frame_counter = False
arrays = {
'Eng (1) N1':
load_compressed(
os.path.join(test_data_path,
'split_segments_eng_1_n1_slowslice.npz')),
'Eng (2) N1':
load_compressed(
os.path.join(test_data_path,
'split_segments_eng_2_n1_slowslice.npz')),
'Groundspeed':
load_compressed(
os.path.join(test_data_path,
'split_segments_groundspeed_slowslice.npz'))
}
def hdf_getitem(self, key, **kwargs):
return Parameter(key, array=arrays[key], frequency=1)
hdf.__getitem__ = hdf_getitem
norm_array, freq = _get_normalised_split_params(hdf)
# find split which without Groundspeed and averaging of the
# normalised parameters would not work properly due to a single
# engine taxi. Before using groundspeed and averaging, the minimum of
# the engine only parameters would split too early, during the taxi_in
self.assertEqual(np.ma.argmin(norm_array), 715)
def test_segment_type_and_slice_1(self):
# Unmasked fast Airspeed at the beginning of the data which is difficult
# to validate should be ignored in segment type identification.
speed_array = load_compressed(os.path.join(test_data_path, 'segment_type_and_slice_1_speed.npz'))
heading_array = load_compressed(os.path.join(test_data_path, 'segment_type_and_slice_1_heading.npz'))
eng_arrays = load_compressed(os.path.join(test_data_path, 'segment_type_and_slice_1_eng_arrays.npz'))
aircraft_info = {'Aircraft Type': 'aeroplane'}
thresholds = {'hash_min_samples': 64, 'speed_threshold': 80, 'min_split_duration': 100, 'min_duration': 180}
hdf = mock.Mock()
hdf.superframe_present = False
segment_type, segment, array_start_secs = _segment_type_and_slice(
speed_array, 1, heading_array, 1, 0, 11824, eng_arrays,
aircraft_info, thresholds, hdf)
self.assertEqual(segment_type, 'START_AND_STOP')
self.assertEqual(segment, slice(0, 11824))
self.assertEqual(array_start_secs, 0)
def __call__(self, path):
self.path = path
if path == 'slow':
self.airspeed = np.ma.arange(10, 20).repeat(5)
else:
self.airspeed = np.ma.array(
load_compressed(os.path.join(test_data_path, 'airspeed_sample.npz')))
self.duration = len(self.airspeed)
return self
def get(key):
array = load_compressed(
os.path.join(test_data_path,
'segment_type_and_slice_2_gog.npz'))
return Parameter('Gear on Ground', array=array)
def load_array(filename):
return load_compressed(os.path.join(test_data_path, filename))
def load_array(filename):
return load_compressed(os.path.join(test_data_path, filename))