def test_pipelinesearcher(makedirs_mock):
# static methods
assert hasattr(PipelineSearcher, '_find_datasets')
assert hasattr(PipelineSearcher, '_new_pipeline')
# default parameters
instance = PipelineSearcher()
makedirs_mock.assert_called_with(instance.ranked_dir, exist_ok=True)
assert instance.input == 'input'
assert instance.output == 'output'
assert not instance.dump
assert instance.ranked_dir == '{}/pipelines_ranked'.format(instance.output)
assert isinstance(instance.data_pipeline, Pipeline)
assert isinstance(instance.scoring_pipeline, Pipeline)
# other parameters
instance = PipelineSearcher(input_dir='new-input',
output_dir='new-output',
dump=True)
makedirs_mock.assert_called_with(instance.ranked_dir, exist_ok=True)
assert instance.input == 'new-input'
assert instance.output == 'new-output'
assert instance.dump
assert instance.ranked_dir == '{}/pipelines_ranked'.format(instance.output)
assert isinstance(instance.data_pipeline, Pipeline)
assert isinstance(instance.scoring_pipeline, Pipeline)
assert instance.datasets == {}
def test_pipelinesearcher_setup_search():
instance = PipelineSearcher()
assert hasattr(instance, 'solutions')
assert not hasattr(instance, '_stop')
assert not hasattr(instance, 'done')
assert not hasattr(instance, 'start_time')
assert not hasattr(instance, 'timeout')
assert not hasattr(instance, 'max_end_time')
# without timeout
instance.timeout = None
instance.setup_search()
assert instance.solutions == []
assert instance._stop is False
assert instance.done is False
assert hasattr(instance, 'start_time')
assert instance.timeout is None
assert instance.max_end_time is None
# with timeout
instance.timeout = 0.5
instance.setup_search()
assert instance.timeout == 0.5
assert instance.max_end_time == instance.start_time + timedelta(seconds=0.5)
def test_pipelinesearcher_load_pipeline(json_loader_mock, yaml_loader_mock):
instance = PipelineSearcher()
open_mock = mock_open(read_data='data')
json_loader_mock.reset_mock()
yaml_loader_mock.reset_mock()
# yaml file
with patch('ta2.search.open', open_mock) as _:
instance._load_pipeline('test.yml')
open_mock.assert_called_with('{}/test.yml'.format(PIPELINES_DIR), 'r')
assert yaml_loader_mock.call_count == 1
assert json_loader_mock.call_count == 0
# json file
with patch('ta2.search.open', open_mock) as _:
instance._load_pipeline('test.json')
open_mock.assert_called_with('{}/test.json'.format(PIPELINES_DIR), 'r')
assert yaml_loader_mock.call_count == 1
assert json_loader_mock.call_count == 1
# without file extension
with patch('ta2.search.open', open_mock) as _:
instance._load_pipeline('test')
open_mock.assert_called_with('{}/test.json'.format(PIPELINES_DIR), 'r')
assert yaml_loader_mock.call_count == 1
assert json_loader_mock.call_count == 2
def test_pipelinesearcher_get_template(logger_mock):
instance = PipelineSearcher()
data = {'problem': {'task_type': None}}
# classification
data['problem']['task_type'] = TaskType.CLASSIFICATION
result = instance._get_template(None, data) # dataset (None) is not used
assert logger_mock.call_count == 1
assert result == 'xgb_classification.all_hp.yml'
# regression
data['problem']['task_type'] = TaskType.REGRESSION
result = instance._get_template(None, data) # dataset (None) is not used
assert logger_mock.call_count == 2
assert result == 'xgb_regression.all_hp.yml'
# not supported
data['problem']['task_type'] = 'other-task-type'
with pytest.raises(ValueError):
instance._get_template(None, data) # dataset (None) is not used
def test_pipelinesearcher_stop():
instance = PipelineSearcher()
assert not hasattr(instance, '_stop')
# setting _stop
instance.stop()
assert instance._stop
def search(dataset_root, problem, args):
pps = PipelineSearcher(
args.input,
args.output,
args.static,
dump=True,
hard_timeout=args.hard,
)
return pps.search(problem, args.timeout, args.budget, args.template)
def test_pipelinesearcher_save_pipeline(random_mock):
id = 'test-id'
score = 1.0
random_mock.return_value = 2
pipeline_mock = MagicMock(id=id, score=score)
pipeline_mock.to_json_structure = MagicMock(return_value={})
open_mock = mock_open()
# avoid saving pipeline on file
instance = PipelineSearcher(dump=False)
instance.solutions = [
] # normally, setted in `PipelineSearcher.setup_search`
result = instance._save_pipeline(
pipeline_mock, None) # normalized_score (None) not used in this case
assert result is None
assert pipeline_mock.to_json_structure.call_count == 1
assert instance.solutions == [{'score': score}]
assert not random_mock.called
assert not open_mock.called
# saving the pipeline on file (dump = True)
instance = PipelineSearcher(dump=True)
instance.solutions = [
] # normally, setted in `PipelineSearcher.setup_search`
with patch('ta2.search.open', open_mock) as _:
result = instance._save_pipeline(pipeline_mock, 1)
assert result is None
assert pipeline_mock.to_json_structure.call_count == 2
assert instance.solutions == [{'score': score, 'pipeline_rank': 2.e-12}]
assert random_mock.call_count == 1
assert open_mock.call_count == 1
open_mock.assert_called_with('{}/{}.json'.format(instance.ranked_dir, id),
'w')
def test_pipelinesearcher_defaults(makedirs_mock):
instance = PipelineSearcher()
expected_calls = [
call('output/pipelines_ranked', exist_ok=True),
call('output/pipelines_scored', exist_ok=True),
call('output/pipelines_searched', exist_ok=True),
]
assert makedirs_mock.call_args_list == expected_calls
assert instance.input == 'input'
assert instance.output == 'output'
assert not instance.dump
assert instance.ranked_dir == 'output/pipelines_ranked'
assert instance.scored_dir == 'output/pipelines_scored'
assert instance.searched_dir == 'output/pipelines_searched'
assert isinstance(instance.data_pipeline, Pipeline)
assert isinstance(instance.scoring_pipeline, Pipeline)
def test_pipelinesearcher(makedirs_mock, from_yaml_mock):
instance = PipelineSearcher(input_dir='new-input', output_dir='new-output', dump=True)
expected_calls = [
call('new-output/pipeline_runs', exist_ok=True),
call('new-output/pipelines_ranked', exist_ok=True),
call('new-output/pipelines_scored', exist_ok=True),
call('new-output/pipelines_searched', exist_ok=True),
]
assert makedirs_mock.call_args_list == expected_calls
assert instance.input == 'new-input'
assert instance.output == 'new-output'
assert instance.dump
assert instance.ranked_dir == 'new-output/pipelines_ranked'
assert instance.scored_dir == 'new-output/pipelines_scored'
assert instance.searched_dir == 'new-output/pipelines_searched'
assert instance.data_pipeline == from_yaml_mock.return_value
assert instance.scoring_pipeline == from_yaml_mock.return_value
def test_pipelinesearcher(makedirs_mock):
instance = PipelineSearcher(input_dir='new-input',
output_dir='new-output',
dump=True)
expected_calls = [
call('new-output/pipelines_ranked', exist_ok=True),
call('new-output/pipelines_scored', exist_ok=True),
call('new-output/pipelines_searched', exist_ok=True),
]
assert makedirs_mock.call_args_list == expected_calls
assert instance.input == 'new-input'
assert instance.output == 'new-output'
assert instance.dump
assert instance.ranked_dir == 'new-output/pipelines_ranked'
assert instance.scored_dir == 'new-output/pipelines_scored'
assert instance.searched_dir == 'new-output/pipelines_searched'
assert isinstance(instance.data_pipeline, Pipeline)
assert isinstance(instance.scoring_pipeline, Pipeline)
assert instance.datasets == {}
def test_pipelinesearcher_check_stop(datetime_mock):
datetime_mock.now = MagicMock(return_value=10)
# no stop
instance = PipelineSearcher()
instance._stop = False # normally, setted in `PipelineSearcher.setup_search`
instance.timeout = None # normally, setted in `PipelineSearcher.setup_search`
assert instance.check_stop() is None
# stop by `_stop` attribute
instance._stop = True
with pytest.raises(KeyboardInterrupt):
instance.check_stop()
# stop by `max_end_time`
instance._stop = False
instance.timeout = 10
instance.max_end_time = 5
with pytest.raises(KeyboardInterrupt):
instance.check_stop()
def test_pipelinesearcher_score_pipeline(evaluate_mock):
instance = PipelineSearcher()
expected_scores = [MagicMock(value=[1])]
evaluate_mock.return_value = (expected_scores, expected_scores)
# parameters
dataset = {}
problem = {'problem': {'performance_metrics': None}}
pipeline_mock = MagicMock()
metrics = {'test': 'metric'}
random_seed = 0
folds = 5
stratified = False
shuffle = False
data_params = {
'number_of_folds': json.dumps(folds),
'stratified': json.dumps(stratified),
'shuffle': json.dumps(shuffle),
}
# with custom metrics
instance.score_pipeline(
dataset, problem, pipeline_mock,
metrics=metrics, random_seed=random_seed,
folds=folds, stratified=stratified, shuffle=shuffle
)
evaluate_mock.assert_called_with(
pipeline=pipeline_mock,
inputs=[dataset],
data_pipeline=instance.data_pipeline,
scoring_pipeline=instance.scoring_pipeline,
problem_description=problem,
data_params=data_params, # folds, stratified, shuffle
metrics=metrics, # custom metrics
context=Context.TESTING,
random_seed=random_seed,
data_random_seed=random_seed,
scoring_random_seed=random_seed,
volumes_dir=instance.static
)
assert pipeline_mock.cv_scores == [score.value[0] for score in expected_scores]
# with problem metrics
instance.score_pipeline(
dataset, problem, pipeline_mock,
metrics=None, random_seed=random_seed,
folds=folds, stratified=stratified, shuffle=shuffle
)
evaluate_mock.assert_called_with(
pipeline=pipeline_mock,
inputs=[dataset],
data_pipeline=instance.data_pipeline,
scoring_pipeline=instance.scoring_pipeline,
problem_description=problem,
data_params=data_params, # folds, stratified, shuffle
metrics=problem['problem']['performance_metrics'], # custom metrics
context=Context.TESTING,
random_seed=random_seed,
data_random_seed=random_seed,
scoring_random_seed=random_seed,
volumes_dir=instance.static
)
assert pipeline_mock.cv_scores == [score.value[0] for score in expected_scores]
def search(dataset_root, problem, args):
pps = PipelineSearcher(args.input, args.output, dump=True)
return pps.search(problem, timeout=args.timeout, budget=args.budget)
def process_dataset(dataset_name, dataset, problem, args):
box_print("Processing dataset {}".format(dataset_name), True)
output_path = os.path.join(args.output, dataset_name)
os.makedirs(output_path, exist_ok=True)
LOGGER.info("Searching Pipeline for dataset {}".format(dataset_name))
try:
start_ts = datetime.utcnow()
pps = PipelineSearcher(args.input,
output_path,
args.static,
dump=True,
hard_timeout=args.hard,
ignore_errors=args.ignore_errors,
cv_folds=args.folds,
subprocess_timeout=args.subprocess_timeout,
max_errors=args.max_errors,
store_summary=True)
result = pps.search(dataset, problem, args.timeout, args.budget,
args.templates_csv)
result['elapsed'] = datetime.utcnow() - start_ts
result['dataset'] = dataset_name
except Exception as ex:
result = {
'dataset': dataset_name,
'error': '{}: {}'.format(type(ex).__name__, ex),
}
else:
try:
summary = result.pop('summary')
candidates = _select_candidates(summary)
if candidates.empty:
box_print('No valid pipelines found for dataset {}'.format(
dataset_name))
else:
ranked_path = os.path.join(output_path, 'pipelines_ranked')
test_scores = list()
for _, candidate in candidates.iterrows():
try:
pipeline = candidate.pipeline
pipeline_path = os.path.join(ranked_path, pipeline)
test_score = score_pipeline(dataset, problem,
pipeline_path, args.static,
output_path)
test_scores.append(test_score)
except Exception:
test_scores.append(None)
candidates['test_score'] = test_scores
candidates = candidates.sort_values('test_score',
ascending=False)
best = candidates.iloc[0]
result['test_score'] = best.test_score
result['template'] = best.template
result['cv_score'] = best.score
box_print('Best pipelines for dataset {}:\n{}'.format(
dataset_name, candidates.to_string()))
except Exception as ex:
LOGGER.exception('Error while testing the winner pipeline')
result['error'] = 'TEST Error: {}'.format(ex)
return result