48 lines
1.9 KiB
Python
48 lines
1.9 KiB
Python
import os
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from unittest import mock
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import pytest
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from lightning_utilities.core.imports import package_available
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from tests_examples_app.public import _PATH_EXAMPLES
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from lightning_app.testing.helpers import _RunIf
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from lightning_app.testing.testing import application_testing, LightningTestApp
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class LightningTestMultiNodeApp(LightningTestApp):
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def on_before_run_once(self):
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res = super().on_before_run_once()
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if self.works and all(w.has_stopped for w in self.works):
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assert len(self.works) == 2
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return True
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return res
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# for the skip to work, the package needs to be installed without editable mode
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_SKIP_LIGHTNING_UNAVAILABLE = pytest.mark.skipif(not package_available("lightning"), reason="script requires lightning")
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@pytest.mark.parametrize(
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"app_name",
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[
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"train_pytorch.py",
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"train_any.py",
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"train_pytorch_spawn.py",
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pytest.param("train_lite.py", marks=_SKIP_LIGHTNING_UNAVAILABLE),
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pytest.param("train_lt_script.py", marks=_SKIP_LIGHTNING_UNAVAILABLE),
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pytest.param("train_lt.py", marks=_SKIP_LIGHTNING_UNAVAILABLE),
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],
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)
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@_RunIf(skip_windows=True) # flaky
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@mock.patch("lightning_app.components.multi_node.base.is_running_in_cloud", return_value=True)
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def test_multi_node_examples(_, app_name, monkeypatch):
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# note: this test will fail locally:
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# * if you installed `lightning_app`, then the examples need to be
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# rewritten to use `lightning_app` imports (CI does this)
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# * if you installed `lightning`, then the imports in this file and mocks
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# need to be changed to use `lightning`.
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monkeypatch.chdir(os.path.join(_PATH_EXAMPLES, "app_multi_node"))
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command_line = [app_name, "--blocking", "False", "--open-ui", "False", "--setup"]
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result = application_testing(LightningTestMultiNodeApp, command_line)
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assert result.exit_code == 0
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