mirror of
https://github.com/Farama-Foundation/Gymnasium.git
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76 lines
2.1 KiB
Python
76 lines
2.1 KiB
Python
import pytest
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import os
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import shutil
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import gym
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from gym.wrappers import (
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RecordEpisodeStatistics,
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RecordVideo,
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capped_cubic_video_schedule,
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)
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def test_record_video_using_default_trigger():
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env = gym.make("CartPole-v1")
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env = gym.wrappers.RecordVideo(env, "videos")
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env.reset()
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for _ in range(199):
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action = env.action_space.sample()
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_, _, done, _ = env.step(action)
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if done:
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env.reset()
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env.close()
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assert os.path.isdir("videos")
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mp4_files = [file for file in os.listdir("videos") if file.endswith(".mp4")]
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assert len(mp4_files) == sum(
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capped_cubic_video_schedule(i) for i in range(env.episode_id + 1)
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)
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shutil.rmtree("videos")
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def test_record_video_step_trigger():
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env = gym.make("CartPole-v1")
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env._max_episode_steps = 20
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env = gym.wrappers.RecordVideo(env, "videos", step_trigger=lambda x: x % 100 == 0)
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env.reset()
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for _ in range(199):
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action = env.action_space.sample()
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_, _, done, _ = env.step(action)
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if done:
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env.reset()
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env.close()
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assert os.path.isdir("videos")
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mp4_files = [file for file in os.listdir("videos") if file.endswith(".mp4")]
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assert len(mp4_files) == 2
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shutil.rmtree("videos")
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def make_env(gym_id, seed):
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def thunk():
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env = gym.make(gym_id)
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env._max_episode_steps = 20
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if seed == 1:
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env = gym.wrappers.RecordVideo(
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env, "videos", step_trigger=lambda x: x % 100 == 0
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)
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return env
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return thunk
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def test_record_video_within_vector():
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envs = gym.vector.SyncVectorEnv([make_env("CartPole-v1", 1 + i) for i in range(2)])
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envs = gym.wrappers.RecordEpisodeStatistics(envs)
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envs.reset()
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for i in range(199):
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_, _, _, infos = envs.step(envs.action_space.sample())
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for info in infos:
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if "episode" in info.keys():
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print(f"episode_reward={info['episode']['r']}")
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break
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assert os.path.isdir("videos")
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mp4_files = [file for file in os.listdir("videos") if file.endswith(".mp4")]
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assert len(mp4_files) == 2
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shutil.rmtree("videos")
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