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import os
import shutil
import sys
from pathlib import Path
import pytest
from pdm.cli import actions
from pdm.exceptions import InvalidPyVersion
from pdm.models.caches import JSONFileCache
def test_use_command(project, invoke):
python = "python" if os.name == "nt" else "python3"
python_path = shutil.which(python)
result = invoke(["use", "-f", python], obj=project)
assert result.exit_code == 0
config_content = project.root.joinpath(".pdm.toml").read_text()
assert python_path.replace("\\", "\\\\") in config_content
result = invoke(["use", "-f", python_path], obj=project)
assert result.exit_code == 0
project.meta["requires-python"] = ">=3.6"
project.write_pyproject()
result = invoke(["use", "2.7"], obj=project)
assert result.exit_code == 1
def test_use_python_by_version(project, invoke):
python_version = ".".join(map(str, sys.version_info[:2]))
result = invoke(["use", "-f", python_version], obj=project)
assert result.exit_code == 0
@pytest.mark.skipif(os.name != "posix", reason="Run on POSIX platforms only")
def test_use_wrapper_python(project):
wrapper_script = """#!/bin/bash
exec "{}" "$@"
""".format(
sys.executable
)
shim_path = project.root.joinpath("python_shim.sh")
shim_path.write_text(wrapper_script)
shim_path.chmod(0o755)
actions.do_use(project, shim_path.as_posix())
assert project.python.executable == Path(sys.executable)
@pytest.mark.skipif(os.name != "posix", reason="Run on POSIX platforms only")
def test_use_invalid_wrapper_python(project):
wrapper_script = """#!/bin/bash
echo hello
"""
shim_path = project.root.joinpath("python_shim.sh")
shim_path.write_text(wrapper_script)
shim_path.chmod(0o755)
with pytest.raises(InvalidPyVersion):
actions.do_use(project, shim_path.as_posix())
def test_use_remember_last_selection(project, mocker):
cache = JSONFileCache(project.cache_dir / "use_cache.json")
cache.clear()
actions.do_use(project, first=True)
cache._read_cache()
assert not cache._cache
actions.do_use(project, "3", first=True)
cache._read_cache()
assert "3" in cache
mocker.patch.object(project, "find_interpreters")
actions.do_use(project, "3")
project.find_interpreters.assert_not_called()
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