Update tests/test_environment.py

tests/test_environment.py

@@ -60,10 +60,10 @@ def test_step_identify_error(env):
     assert resp.done == False  # identify_error is not terminal
 
 def test_step_null_action(env):
-    """Null action must return -0.1, never crash."""
+    """Null action must return 0.0 or greater, never crash."""
     env.reset(difficulty="easy")
     resp = env.step(None)
-    assert resp.reward.score >= 0.001 
+    assert resp.reward.score >= 0.0
     assert resp.done == False