fix(tests): remove lint warnings/errors

tests/fixtures/optimizers.py

@@ -18,13 +18,13 @@ from lerobot.common.optim.optimizers import AdamConfig
 from lerobot.common.optim.schedulers import VQBeTSchedulerConfig
 
 
-@pytest.fixture
-def model_params():
+@pytest.fixture(name="model_params")
+def fixture_model_params():
     return [torch.nn.Parameter(torch.randn(10, 10))]
 
 
-@pytest.fixture
-def optimizer(model_params):
+@pytest.fixture(name="optimizer")
+def fixture_optimizer(model_params):
     optimizer = AdamConfig().build(model_params)
     # Dummy step to populate state
     loss = sum(param.sum() for param in model_params)
@@ -33,7 +33,7 @@ def optimizer(model_params):
     return optimizer
 
 
-@pytest.fixture
-def scheduler(optimizer):
+@pytest.fixture(name="scheduler")
+def fixture_scheduler(optimizer):
     config = VQBeTSchedulerConfig(num_warmup_steps=10, num_vqvae_training_steps=20, num_cycles=0.5)
     return config.build(optimizer, num_training_steps=100)