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import shutil
import subprocess
import sys
from unittest.mock import Mock
import pytest # type: ignore[import-not-found]
import pipx.interpreter
import pipx.paths
import pipx.standalone_python
from pipx.constants import WINDOWS
from pipx.interpreter import (
InterpreterResolutionError,
_find_default_windows_python,
_get_absolute_python_interpreter,
find_python_interpreter,
)
from pipx.util import PipxError
original_which = shutil.which
@pytest.mark.skipif(not sys.platform.startswith("win"), reason="Looks for Python.exe")
@pytest.mark.parametrize("venv", [True, False])
def test_windows_python_with_version(monkeypatch, venv):
def which(name):
if name == "py":
return "py"
return original_which(name)
major = sys.version_info.major
minor = sys.version_info.minor
monkeypatch.setattr(pipx.interpreter, "has_venv", lambda: venv)
monkeypatch.setattr(shutil, "which", which)
python_path = find_python_interpreter(f"{major}.{minor}")
assert python_path is not None
assert f"{major}.{minor}" in python_path or f"{major}{minor}" in python_path
assert python_path.endswith("python.exe")
@pytest.mark.skipif(not sys.platform.startswith("win"), reason="Looks for Python.exe")
@pytest.mark.parametrize("venv", [True, False])
def test_windows_python_with_python_and_version(monkeypatch, venv):
def which(name):
if name == "py":
return "py"
return original_which(name)
major = sys.version_info.major
minor = sys.version_info.minor
monkeypatch.setattr(pipx.interpreter, "has_venv", lambda: venv)
monkeypatch.setattr(shutil, "which", which)
python_path = find_python_interpreter(f"python{major}.{minor}")
assert python_path is not None
assert f"{major}.{minor}" in python_path or f"{major}{minor}" in python_path
assert python_path.endswith("python.exe")
@pytest.mark.skipif(not sys.platform.startswith("win"), reason="Looks for Python.exe")
@pytest.mark.parametrize("venv", [True, False])
def test_windows_python_with_python_and_unavailable_version(monkeypatch, venv):
def which(name):
if name == "py":
return "py"
return original_which(name)
major = sys.version_info.major + 99
minor = sys.version_info.minor
monkeypatch.setattr(pipx.interpreter, "has_venv", lambda: venv)
monkeypatch.setattr(shutil, "which", which)
with pytest.raises(InterpreterResolutionError) as e:
find_python_interpreter(f"python{major}.{minor}")
assert "py --list" in str(e)
def test_windows_python_no_version_with_venv(monkeypatch):
monkeypatch.setattr(pipx.interpreter, "has_venv", lambda: True)
assert _find_default_windows_python() == sys.executable
def test_windows_python_no_version_no_venv_with_py(monkeypatch):
def which(name):
return "py"
monkeypatch.setattr(pipx.interpreter, "has_venv", lambda: False)
monkeypatch.setattr(shutil, "which", which)
assert _find_default_windows_python() == "py"
def test_windows_python_no_version_no_venv_python_present(monkeypatch):
def which(name):
if name == "python":
return "python"
# Note: returns False for "py"
monkeypatch.setattr(pipx.interpreter, "has_venv", lambda: False)
monkeypatch.setattr(shutil, "which", which)
assert _find_default_windows_python() == "python"
def test_windows_python_no_version_no_venv_no_python(monkeypatch):
def which(name):
return None
monkeypatch.setattr(pipx.interpreter, "has_venv", lambda: False)
monkeypatch.setattr(shutil, "which", which)
with pytest.raises(PipxError):
_find_default_windows_python()
# Test the checks for the store Python.
def test_windows_python_no_venv_store_python(monkeypatch):
def which(name):
if name == "python":
return "WindowsApps"
class dummy_runner:
def __init__(self, rc, out):
self.rc = rc
self.out = out
def __call__(self, *args, **kw):
ret = Mock()
ret.returncode = self.rc
ret.stdout = self.out
return ret
monkeypatch.setattr(pipx.interpreter, "has_venv", lambda: False)
monkeypatch.setattr(shutil, "which", which)
# Store version stub gives return code 9009
monkeypatch.setattr(subprocess, "run", dummy_runner(9009, ""))
with pytest.raises(PipxError):
_find_default_windows_python()
# Even if it doesn't, it returns no output
monkeypatch.setattr(subprocess, "run", dummy_runner(0, ""))
with pytest.raises(PipxError):
_find_default_windows_python()
# If it *does* pass the tests, we use it as it's not the stub
monkeypatch.setattr(subprocess, "run", dummy_runner(0, "3.8"))
assert _find_default_windows_python() == "WindowsApps"
def test_bad_env_python(monkeypatch):
with pytest.raises(PipxError):
_get_absolute_python_interpreter("bad_python")
def test_good_env_python(monkeypatch, capsys):
good_exec = _get_absolute_python_interpreter(sys.executable)
assert good_exec == sys.executable
def test_find_python_interpreter_by_path(monkeypatch):
interpreter_path = sys.executable
assert interpreter_path == find_python_interpreter(interpreter_path)
def test_find_python_interpreter_by_version(monkeypatch):
major = sys.version_info.major
minor = sys.version_info.minor
python_path = find_python_interpreter(f"python{major}.{minor}")
assert python_path == f"python{major}.{minor}" or f"Python\\{major}.{minor}" in python_path
def test_find_python_interpreter_by_wrong_path_raises(monkeypatch):
interpreter_path = sys.executable + "99"
with pytest.raises(InterpreterResolutionError) as e:
find_python_interpreter(interpreter_path)
assert "like a path" in str(e)
def test_find_python_interpreter_missing_on_path_raises(monkeypatch):
interpreter = "1.1"
with pytest.raises(InterpreterResolutionError) as e:
find_python_interpreter(interpreter)
assert "Python Launcher" in str(e)
assert "on your PATH" in str(e)
def test_fetch_missing_python(monkeypatch, mocked_github_api):
def which(name):
return None
monkeypatch.setattr(shutil, "which", which)
major = sys.version_info.major
minor = sys.version_info.minor
target_python = f"{major}.{minor}"
python_path = find_python_interpreter(target_python, fetch_missing_python=True)
assert python_path is not None
assert target_python in python_path
assert str(pipx.paths.ctx.standalone_python_cachedir) in python_path
if WINDOWS:
assert python_path.endswith("python.exe")
else:
assert python_path.endswith("python3")
subprocess.run([python_path, "-c", "import sys; print(sys.executable)"], check=True)
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