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from os.path import isabs, basename, dirname
import os
import re
import sys
import venv
import pytest
from flit import PythonNotFoundError, find_python_executable
def test_default():
assert find_python_executable(None) == sys.executable
def test_self():
assert find_python_executable(sys.executable) == sys.executable
def test_abs():
abs_path = "C:\\PythonXY\\python.exe" if os.name == 'nt' else '/usr/bin/python'
assert find_python_executable(abs_path) == abs_path
def test_find_in_path():
assert isabs(find_python_executable("python"))
def test_env(tmp_path):
path = tmp_path / "venv"
venv.create(path)
executable = find_python_executable(path)
assert basename(dirname(dirname(executable))) == "venv"
def test_env_abs(tmp_path, monkeypatch):
path = tmp_path / "venv"
venv.create(path)
monkeypatch.chdir(tmp_path)
assert isabs(find_python_executable("venv"))
@pytest.mark.parametrize("bad_python_name", ["pyhton", "ls", "."])
def test_exception(bad_python_name: str):
"""Test that an appropriate exception (that contains the error string) is raised."""
with pytest.raises(PythonNotFoundError, match=re.escape(bad_python_name)):
find_python_executable(bad_python_name)
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