def test_add_records_multi_channel(self, test_records1, test_records2):
"""Tests if right records added on calling add_records, add multiple channels."""
formatted_test_records = {
test_records1[0][2]: test_records1,
test_records2[0][2]: test_records2,
}
test_slice = LevelSlice('dummy')
assert test_slice._records == {}
expected_test_records = formatted_test_records
test_slice.add_records(formatted_test_records)
assert test_slice._records == expected_test_records
def test_save_member(self, test_records1):
"""Tests if object member records saved."""
tmpfile = NamedTemporaryFile()
test_save_slice = LevelSlice(tmpfile.name)
formatted_test_records = {test_records1[0][2]: test_records1}
test_save_slice.add_records(formatted_test_records)
test_save_slice.save()
test_read_slice = LevelSlice(tmpfile.name)
test_read_slice.read()
assert test_read_slice._records == formatted_test_records
tmpfile.close()
def _single_level_downsample(self, strategy, prev_level, curr_level,
level_metadata):
"""Downsamples for one single level.
Args:
strategy: A string representing a downsampling strategy.
prev_level: A string of the name of the current level.
curr_level: A string of the name of the previous level.
level_metadata: A metadata object for this level.
Returns:
A dict of metadata for the current level.
"""
curr_slice_names = self._metadata['levels'][curr_level]['names']
prev_slice_names = self._metadata['levels'][prev_level]['names']
slice_index = 0
curr_slice_path = utils.get_slice_path(
self._preprocess_dir, curr_level,
utils.get_slice_name(slice_index), strategy)
curr_level_slice = LevelSlice(curr_slice_path,
bucket=self._preprocess_bucket)
for prev_slice_name in prev_slice_names:
prev_slice_path = utils.get_slice_path(self._preprocess_dir,
prev_level, prev_slice_name,
strategy)
prev_level_slice = LevelSlice(prev_slice_path,
bucket=self._preprocess_bucket)
prev_level_slice.read()
prev_level_downsample = prev_level_slice.downsample(
strategy, self._downsample_level_factor)
curr_level_slice.add_records(prev_level_downsample)
if curr_level_slice.get_records_count() >= self._number_per_slice:
curr_level_slice.save()
level_metadata[curr_slice_names[
slice_index]] = curr_level_slice.get_first_timestamp()
slice_index += 1
curr_slice_path = utils.get_slice_path(
self._preprocess_dir, curr_level,
utils.get_slice_name(slice_index), strategy)
curr_level_slice = LevelSlice(curr_slice_path,
bucket=self._preprocess_bucket)
curr_level_slice.save()
level_metadata[curr_slice_names[
slice_index]] = curr_level_slice.get_first_timestamp()
return level_metadata
def test_add_records_single_channel(self, test_records1):
"""Tests if right records added on calling add_records, add single channel."""
formatted_test_records = {test_records1[0][2]: test_records1}
test_slice = LevelSlice('dummy')
assert test_slice._records == {}
expected_test_records = formatted_test_records
test_slice.add_records(formatted_test_records)
assert test_slice._records == expected_test_records
expected_test_records = {
test_records1[0][2]: test_records1 + test_records1
}
test_slice.add_records(formatted_test_records)
assert test_slice._records == expected_test_records