Add test for example scripts

examples/rlbench_gym.py

@@ -1,5 +1,6 @@
 import gymnasium as gym
 from gymnasium.utils.performance import benchmark_step
+import rlbench.gym
 
 env = gym.make('rlbench/reach_target-vision-v0', render_mode="rgb_array")
 

tests/unit/test_examples.py

@@ -0,0 +1,15 @@
+import pytest
+from pathlib import Path
+
+@pytest.fixture
+def root_dir():
+    return Path(__file__).parents[2]
+
+@pytest.fixture(autouse=True)
+def chdir_to_root(root_dir, monkeypatch):
+    monkeypatch.chdir(root_dir)
+
+@pytest.mark.parametrize("script_file", ["rlbench_gym.py", "rlbench_gym_vector.py"])
+def test_example(script_file):
+    import subprocess
+    subprocess.run(["python", f"examples/{script_file}"], check=True)