Files
lerobot/tests/datasets/test_dataset_utils.py
Steven Palma d2782cf66b chore: replace hard-coded action values with constants throughout all the source code (#2055)
* chore: replace hard-coded 'action' values with constants throughout all the source code

* chore(tests): replace hard-coded action values with constants throughout all the test code
2025-09-26 13:33:18 +02:00

134 lines
4.1 KiB
Python

#!/usr/bin/env python
# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import pytest
import torch
from datasets import Dataset
from huggingface_hub import DatasetCard
from lerobot.datasets.push_dataset_to_hub.utils import calculate_episode_data_index
from lerobot.datasets.utils import combine_feature_dicts, create_lerobot_dataset_card, hf_transform_to_torch
from lerobot.utils.constants import ACTION, OBS_IMAGES
def test_default_parameters():
card = create_lerobot_dataset_card()
assert isinstance(card, DatasetCard)
assert card.data.tags == ["LeRobot"]
assert card.data.task_categories == ["robotics"]
assert card.data.configs == [
{
"config_name": "default",
"data_files": "data/*/*.parquet",
}
]
def test_with_tags():
tags = ["tag1", "tag2"]
card = create_lerobot_dataset_card(tags=tags)
assert card.data.tags == ["LeRobot", "tag1", "tag2"]
def test_calculate_episode_data_index():
dataset = Dataset.from_dict(
{
"timestamp": [0.1, 0.2, 0.3, 0.4, 0.5, 0.6],
"index": [0, 1, 2, 3, 4, 5],
"episode_index": [0, 0, 1, 2, 2, 2],
},
)
dataset.set_transform(hf_transform_to_torch)
episode_data_index = calculate_episode_data_index(dataset)
assert torch.equal(episode_data_index["from"], torch.tensor([0, 2, 3]))
assert torch.equal(episode_data_index["to"], torch.tensor([2, 3, 6]))
def test_merge_simple_vectors():
g1 = {
ACTION: {
"dtype": "float32",
"shape": (2,),
"names": ["ee.x", "ee.y"],
}
}
g2 = {
ACTION: {
"dtype": "float32",
"shape": (2,),
"names": ["ee.y", "ee.z"],
}
}
out = combine_feature_dicts(g1, g2)
assert ACTION in out
assert out[ACTION]["dtype"] == "float32"
# Names merged with preserved order and de-dupuplication
assert out[ACTION]["names"] == ["ee.x", "ee.y", "ee.z"]
# Shape correctly recomputed from names length
assert out[ACTION]["shape"] == (3,)
def test_merge_multiple_groups_order_and_dedup():
g1 = {ACTION: {"dtype": "float32", "shape": (2,), "names": ["a", "b"]}}
g2 = {ACTION: {"dtype": "float32", "shape": (2,), "names": ["b", "c"]}}
g3 = {ACTION: {"dtype": "float32", "shape": (3,), "names": ["a", "c", "d"]}}
out = combine_feature_dicts(g1, g2, g3)
assert out[ACTION]["names"] == ["a", "b", "c", "d"]
assert out[ACTION]["shape"] == (4,)
def test_non_vector_last_wins_for_images():
# Non-vector (images) with same name should be overwritten by the last image specified
g1 = {
f"{OBS_IMAGES}.front": {
"dtype": "image",
"shape": (3, 480, 640),
"names": ["channels", "height", "width"],
}
}
g2 = {
f"{OBS_IMAGES}.front": {
"dtype": "image",
"shape": (3, 720, 1280),
"names": ["channels", "height", "width"],
}
}
out = combine_feature_dicts(g1, g2)
assert out[f"{OBS_IMAGES}.front"]["shape"] == (3, 720, 1280)
assert out[f"{OBS_IMAGES}.front"]["dtype"] == "image"
def test_dtype_mismatch_raises():
g1 = {ACTION: {"dtype": "float32", "shape": (1,), "names": ["a"]}}
g2 = {ACTION: {"dtype": "float64", "shape": (1,), "names": ["b"]}}
with pytest.raises(ValueError, match="dtype mismatch for 'action'"):
_ = combine_feature_dicts(g1, g2)
def test_non_dict_passthrough_last_wins():
g1 = {"misc": 123}
g2 = {"misc": 456}
out = combine_feature_dicts(g1, g2)
# For non-dict entries the last one wins
assert out["misc"] == 456