fix: skip tests that require grpc if not available

tests/policies/test_sac_policy.py

@@ -15,6 +15,9 @@
 # limitations under the License.
 
 import pytest
+
+pytest.importorskip("grpc")
+
 import torch
 from torch import Tensor, nn
 

tests/rl/test_data_mixer.py

@@ -13,6 +13,10 @@
 # limitations under the License.
 """Tests for RL data mixing (DataMixer, OnlineOfflineMixer)."""
 
+import pytest
+
+pytest.importorskip("grpc")
+
 import torch
 
 from lerobot.rl.buffer import ReplayBuffer

tests/rl/test_sac_algorithm.py

@@ -16,6 +16,9 @@
 """Tests for the RL algorithm abstraction and SACAlgorithm implementation."""
 
 import pytest
+
+pytest.importorskip("grpc")
+
 import torch
 
 from lerobot.configs.types import FeatureType, PolicyFeature

tests/rl/test_trainer.py

@@ -14,6 +14,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import pytest
+
+pytest.importorskip("grpc")
+
 import torch
 from torch import Tensor