def test_unhealthy_then_replaced(python_dir):
    prefix, tmpdir = python_dir

    python.install_environment(prefix, C.DEFAULT, ())

    # simulate an exe which returns an old version
    exe_name = win_exe('python')
    py_exe = prefix.path(python.bin_dir('py_env-default'), exe_name)
    os.rename(py_exe, f'{py_exe}.tmp')

    with open(py_exe, 'w') as f:
        f.write('#!/usr/bin/env bash\necho 1.2.3\n')
    make_executable(py_exe)

    # should be unhealthy due to version mismatch
    ret = python.health_check(prefix, C.DEFAULT)
    assert ret == (
        f'virtualenv python version did not match created version:\n'
        f'- actual version: 1.2.3\n'
        f'- expected version: {python._version_info(sys.executable)}\n')

    # now put the exe back and it should be healthy again
    os.replace(f'{py_exe}.tmp', py_exe)

    assert python.health_check(prefix, C.DEFAULT) is None
def test_healthy_default_creator(python_dir):
    prefix, tmpdir = python_dir

    python.install_environment(prefix, C.DEFAULT, ())

    # should be healthy right after creation
    assert python.health_check(prefix, C.DEFAULT) is None

    # even if a `types.py` file exists, should still be healthy
    tmpdir.join('types.py').ensure()
    assert python.health_check(prefix, C.DEFAULT) is None
def test_healthy_venv_creator(python_dir):
    # venv creator produces slightly different pyvenv.cfg
    prefix, tmpdir = python_dir

    with envcontext((('VIRTUALENV_CREATOR', 'venv'), )):
        python.install_environment(prefix, C.DEFAULT, ())

    assert python.health_check(prefix, C.DEFAULT) is None
def test_unhealthy_old_virtualenv(python_dir):
    prefix, tmpdir = python_dir

    python.install_environment(prefix, C.DEFAULT, ())

    # simulate "old" virtualenv by deleting this file
    os.remove(prefix.path('py_env-default/pyvenv.cfg'))

    ret = python.health_check(prefix, C.DEFAULT)
    assert ret == 'pyvenv.cfg does not exist (old virtualenv?)'
def test_unhealthy_unexpected_pyvenv(python_dir):
    prefix, tmpdir = python_dir

    python.install_environment(prefix, C.DEFAULT, ())

    # simulate a buggy environment build (I don't think this is possible)
    with open(prefix.path('py_env-default/pyvenv.cfg'), 'w'):
        pass

    ret = python.health_check(prefix, C.DEFAULT)
    assert ret == "created virtualenv's pyvenv.cfg is missing `version_info`"
def test_unhealthy_system_version_changes(python_dir):
    prefix, tmpdir = python_dir

    python.install_environment(prefix, C.DEFAULT, ())

    with open(prefix.path('py_env-default/pyvenv.cfg'), 'a') as f:
        f.write('base-executable = /does/not/exist\n')

    ret = python.health_check(prefix, C.DEFAULT)
    assert ret == (
        f'base executable python version does not match created version:\n'
        f'- base-executable version: <<error retrieving version from /does/not/exist>>\n'  # noqa: E501
        f'- expected version: {python._version_info(sys.executable)}\n')
def test_unhealthy_with_version_change(python_dir):
    prefix, tmpdir = python_dir

    python.install_environment(prefix, C.DEFAULT, ())

    with open(prefix.path('py_env-default/pyvenv.cfg'), 'a+') as f:
        f.write('version_info = 1.2.3\n')

    ret = python.health_check(prefix, C.DEFAULT)
    assert ret == (
        f'virtualenv python version did not match created version:\n'
        f'- actual version: {python._version_info(sys.executable)}\n'
        f'- expected version: 1.2.3\n')
def test_unhealthy_python_goes_missing(python_dir):
    prefix, tmpdir = python_dir

    python.install_environment(prefix, C.DEFAULT, ())

    exe_name = win_exe('python')
    py_exe = prefix.path(python.bin_dir('py_env-default'), exe_name)
    os.remove(py_exe)

    ret = python.health_check(prefix, C.DEFAULT)
    assert ret == (
        f'virtualenv python version did not match created version:\n'
        f'- actual version: <<error retrieving version from {py_exe}>>\n'
        f'- expected version: {python._version_info(sys.executable)}\n')