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187144d4e7
Trim and tighten code comments and docstrings across the repository. Comment-only: every changed file verified code-identical to main via AST/token comparison.
55 lines
2 KiB
Python
55 lines
2 KiB
Python
"""Tests for install_python_stack._build_uv_cmd torch-backend handling."""
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from __future__ import annotations
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import importlib
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import os
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import sys
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from pathlib import Path
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from unittest import mock
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import pytest
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# Add the studio directory so we can import install_python_stack.
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STUDIO_DIR = Path(__file__).resolve().parents[2] / "studio"
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sys.path.insert(0, str(STUDIO_DIR))
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# Import after path setup.
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import install_python_stack as ips
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class TestBuildUvCmdTorchBackend:
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"""Verify _build_uv_cmd only adds --torch-backend when UV_TORCH_BACKEND is set."""
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def _call(self, args: tuple[str, ...] = ()) -> list[str]:
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return ips._build_uv_cmd(args)
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def test_default_no_torch_backend(self):
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"""Without UV_TORCH_BACKEND env var, no --torch-backend flag."""
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env = os.environ.copy()
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env.pop("UV_TORCH_BACKEND", None)
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with mock.patch.dict(os.environ, env, clear = True):
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cmd = self._call(("somepackage",))
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assert not any(
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a.startswith("--torch-backend") for a in cmd
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), f"--torch-backend should not appear by default, got: {cmd}"
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def test_uv_torch_backend_auto(self):
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"""UV_TORCH_BACKEND=auto adds --torch-backend=auto."""
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with mock.patch.dict(os.environ, {"UV_TORCH_BACKEND": "auto"}):
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cmd = self._call(("somepackage",))
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assert "--torch-backend=auto" in cmd
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def test_uv_torch_backend_cpu(self):
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"""UV_TORCH_BACKEND=cpu adds --torch-backend=cpu."""
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with mock.patch.dict(os.environ, {"UV_TORCH_BACKEND": "cpu"}):
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cmd = self._call(("somepackage",))
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assert "--torch-backend=cpu" in cmd
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def test_uv_torch_backend_empty(self):
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"""UV_TORCH_BACKEND="" (empty string) should NOT add --torch-backend."""
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with mock.patch.dict(os.environ, {"UV_TORCH_BACKEND": ""}):
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cmd = self._call(("somepackage",))
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assert not any(
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a.startswith("--torch-backend") for a in cmd
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), f"Empty UV_TORCH_BACKEND should not add flag, got: {cmd}"
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