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* Move tests to root with automatic PyCharm import refactoring. This will likely fail some tests * Changed entry point for a registration test env. * Move a stray lunar_lander test to tests/envs/... * black * Change the version from which importlib_metadata is replaced with importlib.metadata. Also requiring installing importlib_metadata for python 3.8 now. ??????????? * Undo last commit
30 lines
836 B
Python
30 lines
836 B
Python
import pytest
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import numpy as np
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import gym
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from gym.wrappers import TransformObservation
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@pytest.mark.parametrize("env_id", ["CartPole-v1", "Pendulum-v1"])
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def test_transform_observation(env_id):
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affine_transform = lambda x: 3 * x + 2
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env = gym.make(env_id)
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wrapped_env = TransformObservation(
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gym.make(env_id), lambda obs: affine_transform(obs)
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)
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env.seed(0)
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wrapped_env.seed(0)
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obs = env.reset()
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wrapped_obs = wrapped_env.reset()
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assert np.allclose(wrapped_obs, affine_transform(obs))
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action = env.action_space.sample()
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obs, reward, done, _ = env.step(action)
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wrapped_obs, wrapped_reward, wrapped_done, _ = wrapped_env.step(action)
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assert np.allclose(wrapped_obs, affine_transform(obs))
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assert np.allclose(wrapped_reward, reward)
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assert wrapped_done == done
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