Fixed test_env_checker.test_no_error_warnings test, which previously …

…failed due to the velocity observation limits of CartPole being infinite

tests/utils/test_env_checker.py

@@ -22,6 +22,16 @@
 from tests.testing_env import GenericTestEnv
 
 
+CHECK_ENV_IGNORE_WARNINGS = [
+    f"\x1b[33mWARN: {message}\x1b[0m"
+    for message in [
+        "A Box observation space minimum value is -infinity. This is probably too low.",
+        "A Box observation space maximum value is infinity. This is probably too high.",
+        "For Box action spaces, we recommend using a symmetric and normalized space (range=[-1, 1] or [0, 1]). See https://stable-baselines3.readthedocs.io/en/master/guide/rl_tips.html for more information.",
+    ]
+]
+
+
 @pytest.mark.parametrize(
     "env",
     [
@@ -51,6 +61,11 @@ def test_no_error_warnings(env):
     """A full version of this test with all gymnasium envs is run in tests/envs/test_envs.py."""
     with warnings.catch_warnings(record=True) as caught_warnings:
         check_env(env)
+    caught_warnings = [
+        warning
+        for warning in caught_warnings
+        if str(warning.message) not in CHECK_ENV_IGNORE_WARNINGS
+    ]
 
     assert len(caught_warnings) == 0, [warning.message for warning in caught_warnings]