40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
import os
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from unittest import mock
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import pytest
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from pytorch_lightning.plugins.environments import TorchElasticEnvironment
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@mock.patch.dict(os.environ, {})
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def test_default_attributes():
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""" Test the default attributes when no environment variables are set. """
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env = TorchElasticEnvironment()
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assert env.creates_children()
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assert env.master_address() == "127.0.0.1"
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assert env.master_port() == 12910
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assert env.world_size() is None
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with pytest.raises(KeyError):
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# local rank is required to be passed as env variable
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env.local_rank()
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assert env.node_rank() == 0
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@mock.patch.dict(
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os.environ, {
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"MASTER_ADDR": "1.2.3.4",
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"MASTER_PORT": "500",
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"WORLD_SIZE": "20",
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"LOCAL_RANK": "2",
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"GROUP_RANK": "3",
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}
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)
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def test_attributes_from_environment_variables():
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""" Test that the torchelastic cluster environment takes the attributes from the environment variables. """
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env = TorchElasticEnvironment()
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assert env.master_address() == "1.2.3.4"
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assert env.master_port() == 500
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assert env.world_size() == 20
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assert env.local_rank() == 2
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assert env.node_rank() == 3
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