def test_create_source_dynamic_splitting(self):
# 2 values
source = Create._create_source_from_iterable(range(2), self.coder)
source_test_utils.assertSplitAtFractionExhaustive(source)
# Multiple values.
source = Create._create_source_from_iterable(range(11), self.coder)
source_test_utils.assertSplitAtFractionExhaustive(
source, perform_multi_threaded_test=True)
def test_create_source_dynamic_splitting(self):
# 2 values
source = Create._create_source_from_iterable(range(2), self.coder)
source_test_utils.assert_split_at_fraction_exhaustive(source)
# Multiple values.
source = Create._create_source_from_iterable(range(11), self.coder)
source_test_utils.assert_split_at_fraction_exhaustive(
source, perform_multi_threaded_test=True)
def check_read_with_initial_splits(self, values, coder, num_splits):
"""A test that splits the given source into `num_splits` and verifies that
the data read from original source is equal to the union of the data read
from the split sources.
"""
source = Create._create_source_from_iterable(values, coder)
desired_bundle_size = source._total_size / num_splits
splits = source.split(desired_bundle_size)
splits_info = [(split.source, split.start_position,
split.stop_position) for split in splits]
source_test_utils.assert_sources_equal_reference_source(
(source, None, None), splits_info)
def check_read_with_initial_splits(self, values, coder, num_splits):
"""A test that splits the given source into `num_splits` and verifies that
the data read from original source is equal to the union of the data read
from the split sources.
"""
source = Create._create_source_from_iterable(values, coder)
desired_bundle_size = source._total_size / num_splits
splits = source.split(desired_bundle_size)
splits_info = [
(split.source, split.start_position, split.stop_position)
for split in splits]
source_test_utils.assert_sources_equal_reference_source(
(source, None, None), splits_info)
def test_create_source_progress(self):
num_values = 10
source = Create._create_source_from_iterable(range(num_values),
self.coder)
splits = [split for split in source.split(desired_bundle_size=100)]
assert len(splits) == 1
fraction_consumed_report = []
split_points_report = []
range_tracker = splits[0].source.get_range_tracker(
splits[0].start_position, splits[0].stop_position)
for _ in splits[0].source.read(range_tracker):
fraction_consumed_report.append(range_tracker.fraction_consumed())
split_points_report.append(range_tracker.split_points())
self.assertEqual([float(i) / num_values for i in range(num_values)],
fraction_consumed_report)
expected_split_points_report = [((i - 1), num_values - (i - 1))
for i in range(1, num_values + 1)]
self.assertEqual(expected_split_points_report, split_points_report)
def test_create_source_progress(self):
num_values = 10
source = Create._create_source_from_iterable(range(num_values), self.coder)
splits = [split for split in source.split(desired_bundle_size=100)]
assert len(splits) == 1
fraction_consumed_report = []
split_points_report = []
range_tracker = splits[0].source.get_range_tracker(
splits[0].start_position, splits[0].stop_position)
for _ in splits[0].source.read(range_tracker):
fraction_consumed_report.append(range_tracker.fraction_consumed())
split_points_report.append(range_tracker.split_points())
self.assertEqual(
[float(i) / num_values for i in range(num_values)],
fraction_consumed_report)
expected_split_points_report = [
((i - 1), num_values - (i - 1))
for i in range(1, num_values + 1)]
self.assertEqual(
expected_split_points_report, split_points_report)
def test_create_source_read_reentrant_with_initial_splits(self):
source = Create._create_source_from_iterable(range(24), self.coder)
for split in source.split(desired_bundle_size=5):
source_test_utils.assertReentrantReadsSucceed((split.source,
split.start_position,
split.stop_position))
def test_create_source_read_reentrant(self): source = Create._create_source_from_iterable(range(9), self.coder) source_test_utils.assertReentrantReadsSucceed((source, None, None))
def check_read(self, values, coder): source = Create._create_source_from_iterable(values, coder) read_values = source_test_utils.readFromSource(source) self.assertEqual(sorted(values), sorted(read_values))
def test_create_source_read_reentrant_with_initial_splits(self):
source = Create._create_source_from_iterable(range(24), self.coder)
for split in source.split(desired_bundle_size=5):
source_test_utils.assert_reentrant_reads_succeed((split.source,
split.start_position,
split.stop_position))
def test_create_source_read_reentrant(self): source = Create._create_source_from_iterable(range(9), self.coder) source_test_utils.assert_reentrant_reads_succeed((source, None, None))
def check_read(self, values, coder): source = Create._create_source_from_iterable(values, coder) read_values = source_test_utils.read_from_source(source) self.assertEqual(sorted(values), sorted(read_values))
