mirror of
https://github.com/vale981/ray
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84 lines
2.6 KiB
Python
84 lines
2.6 KiB
Python
import unittest
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import ray
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import ray.rllib.algorithms.impala as impala
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import ray.rllib.algorithms.pg as pg
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from ray.rllib.utils.error import EnvError
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from ray.rllib.utils.test_utils import framework_iterator
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class TestErrors(unittest.TestCase):
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"""Tests various failure-modes, making sure we produce meaningful errmsgs."""
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@classmethod
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def setUpClass(cls) -> None:
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ray.init()
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@classmethod
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def tearDownClass(cls) -> None:
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ray.shutdown()
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def test_no_gpus_error(self):
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"""Tests errors related to no-GPU/too-few GPUs/etc.
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This test will only work ok on a CPU-only machine.
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"""
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config = impala.DEFAULT_CONFIG.copy()
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env = "CartPole-v0"
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for _ in framework_iterator(config):
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self.assertRaisesRegex(
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RuntimeError,
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# (?s): "dot matches all" (also newlines).
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"(?s)Found 0 GPUs on your machine.+To change the config",
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lambda: impala.Impala(config=config, env=env),
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)
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def test_bad_envs(self):
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"""Tests different "bad env" errors."""
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config = pg.DEFAULT_CONFIG.copy()
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config["num_workers"] = 0
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# Non existing/non-registered gym env string.
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env = "Alien-Attack-v42"
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for _ in framework_iterator(config):
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self.assertRaisesRegex(
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EnvError,
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f"The env string you provided \\('{env}'\\) is",
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lambda: pg.PG(config=config, env=env),
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)
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# Malformed gym env string (must have v\d at end).
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env = "Alien-Attack-part-42"
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for _ in framework_iterator(config):
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self.assertRaisesRegex(
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EnvError,
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f"The env string you provided \\('{env}'\\) is",
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lambda: pg.PG(config=config, env=env),
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)
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# Non-existing class in a full-class-path.
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env = "ray.rllib.examples.env.random_env.RandomEnvThatDoesntExist"
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for _ in framework_iterator(config):
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self.assertRaisesRegex(
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EnvError,
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f"The env string you provided \\('{env}'\\) is",
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lambda: pg.PG(config=config, env=env),
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)
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# Non-existing module inside a full-class-path.
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env = "ray.rllib.examples.env.module_that_doesnt_exist.SomeEnv"
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for _ in framework_iterator(config):
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self.assertRaisesRegex(
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EnvError,
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f"The env string you provided \\('{env}'\\) is",
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lambda: pg.PG(config=config, env=env),
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)
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if __name__ == "__main__":
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import pytest
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import sys
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sys.exit(pytest.main(["-v", __file__]))
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