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113 行
4.0 KiB
113 行
4.0 KiB
import pytest
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from unittest import mock
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import os
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import unittest
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import tempfile
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import numpy as np
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from mlagents.tf_utils import tf
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from mlagents.trainers.saver.tf_saver import TFSaver
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from mlagents.trainers import __version__
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from mlagents.trainers.settings import TrainerSettings
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from mlagents.trainers.policy.tf_policy import TFPolicy
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from mlagents.trainers.tests import mock_brain as mb
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from mlagents.trainers.tests.test_nn_policy import create_policy_mock
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from mlagents.trainers.ppo.optimizer import PPOOptimizer
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def test_register(tmp_path):
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trainer_params = TrainerSettings()
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saver = TFSaver(trainer_params, tmp_path)
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opt = mock.Mock(spec=PPOOptimizer)
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saver.register(opt)
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assert saver.policy is None
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trainer_params = TrainerSettings()
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policy = create_policy_mock(trainer_params)
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saver.register(policy)
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assert saver.policy is not None
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class ModelVersionTest(unittest.TestCase):
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def test_version_compare(self):
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# Test write_stats
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with self.assertLogs("mlagents.trainers", level="WARNING") as cm:
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trainer_params = TrainerSettings()
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mock_path = tempfile.mkdtemp()
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policy = create_policy_mock(trainer_params)
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saver = TFSaver(trainer_params, mock_path)
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saver.register(policy)
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saver._check_model_version(
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"0.0.0"
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) # This is not the right version for sure
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# Assert that 1 warning has been thrown with incorrect version
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assert len(cm.output) == 1
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saver._check_model_version(__version__) # This should be the right version
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# Assert that no additional warnings have been thrown wth correct ver
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assert len(cm.output) == 1
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def test_load_save(tmp_path):
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path1 = os.path.join(tmp_path, "runid1")
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path2 = os.path.join(tmp_path, "runid2")
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trainer_params = TrainerSettings()
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policy = create_policy_mock(trainer_params)
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saver = TFSaver(trainer_params, path1)
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saver.register(policy)
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saver.initialize_or_load(policy)
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policy.set_step(2000)
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mock_brain_name = "MockBrain"
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saver.save_checkpoint(mock_brain_name, 2000)
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assert len(os.listdir(tmp_path)) > 0
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# Try load from this path
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saver = TFSaver(trainer_params, path1, load=True)
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policy2 = create_policy_mock(trainer_params)
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saver.register(policy2)
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saver.initialize_or_load(policy2)
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_compare_two_policies(policy, policy2)
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assert policy2.get_current_step() == 2000
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# Try initialize from path 1
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trainer_params.init_path = path1
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saver = TFSaver(trainer_params, path2)
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policy3 = create_policy_mock(trainer_params)
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saver.register(policy3)
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saver.initialize_or_load(policy3)
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_compare_two_policies(policy2, policy3)
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# Assert that the steps are 0.
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assert policy3.get_current_step() == 0
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def _compare_two_policies(policy1: TFPolicy, policy2: TFPolicy) -> None:
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"""
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Make sure two policies have the same output for the same input.
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"""
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decision_step, _ = mb.create_steps_from_behavior_spec(
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policy1.behavior_spec, num_agents=1
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)
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run_out1 = policy1.evaluate(decision_step, list(decision_step.agent_id))
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run_out2 = policy2.evaluate(decision_step, list(decision_step.agent_id))
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np.testing.assert_array_equal(run_out2["log_probs"], run_out1["log_probs"])
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@pytest.mark.parametrize("discrete", [True, False], ids=["discrete", "continuous"])
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@pytest.mark.parametrize("visual", [True, False], ids=["visual", "vector"])
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@pytest.mark.parametrize("rnn", [True, False], ids=["rnn", "no_rnn"])
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def test_checkpoint_conversion(tmpdir, rnn, visual, discrete):
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tf.reset_default_graph()
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dummy_config = TrainerSettings()
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model_path = os.path.join(tmpdir, "Mock_Brain")
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policy = create_policy_mock(
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dummy_config, use_rnn=rnn, use_discrete=discrete, use_visual=visual
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)
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trainer_params = TrainerSettings()
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saver = TFSaver(trainer_params, model_path)
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saver.register(policy)
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saver.save_checkpoint("Mock_Brain", 100)
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assert os.path.isfile(model_path + "/Mock_Brain-100.nn")
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