def test_pants_binary_interpreter_selection_with_pexrc(self):
py27_path, py3_path = python_interpreter_path(PY_27), python_interpreter_path(PY_3)
with setup_pexrc_with_pex_python_path([py27_path, py3_path]):
with temporary_dir() as interpreters_cache:
pants_ini_config = {'python-setup': {'interpreter_cache_dir': interpreters_cache}}
pants_run_27 = self.run_pants(
command=['binary', '{}:main_py2'.format(os.path.join(self.testproject,
'python_3_selection_testing'))],
config=pants_ini_config
)
self.assert_success(pants_run_27)
pants_run_3 = self.run_pants(
command=['binary', '{}:main_py3'.format(os.path.join(self.testproject,
'python_3_selection_testing'))],
config=pants_ini_config
)
self.assert_success(pants_run_3)
# Ensure proper interpreter constraints were passed to built pexes.
py2_pex = os.path.join(os.getcwd(), 'dist', 'main_py2.pex')
py3_pex = os.path.join(os.getcwd(), 'dist', 'main_py3.pex')
py2_info = PexInfo.from_pex(py2_pex)
py3_info = PexInfo.from_pex(py3_pex)
self.assertIn('CPython>2.7.6,<3', py2_info.interpreter_constraints)
self.assertIn('CPython>3', py3_info.interpreter_constraints)
# Cleanup created pexes.
os.remove(py2_pex)
os.remove(py3_pex)
def test_pants_test_interpreter_selection_with_pexrc(self):
"""Test the pants test goal with intepreters selected from a PEX_PYTHON_PATH
defined in a pexrc file on disk.
"""
py27_path, py3_path = python_interpreter_path(PY_27), python_interpreter_path(PY_3)
with setup_pexrc_with_pex_python_path([py27_path, py3_path]):
with temporary_dir() as interpreters_cache:
pants_ini_config = {
'python-setup': {
'interpreter_cache_dir': interpreters_cache,
'interpreter_search_paths': ['<PEXRC>'],
}
}
pants_run_27 = self.run_pants(
command=['test', '{}:test_py2'.format(os.path.join(self.testproject,
'python_3_selection_testing'))],
config=pants_ini_config
)
self.assert_success(pants_run_27)
pants_run_3 = self.run_pants(
command=['test', '{}:test_py3'.format(os.path.join(self.testproject,
'python_3_selection_testing'))],
config=pants_ini_config
)
self.assert_success(pants_run_3)
def test_interpereter_cache_setup_using_pex_python_paths(self):
"""Test cache setup using interpreters from a mocked PEX_PYTHON_PATH."""
py27_path, py36_path = python_interpreter_path(
PY_27), python_interpreter_path(PY_36)
with setup_pexrc_with_pex_python_path([py27_path, py36_path]):
with self._setup_cache(constraints=['CPython>=2.7,<3'],
search_paths=['<PEXRC>']) as (cache, _):
self.assertIn(py27_path, {pi.binary for pi in cache.setup()})
with self._setup_cache(constraints=['CPython>=3.6,<4'],
search_paths=['<PEXRC>']) as (cache, _):
self.assertIn(py36_path, {pi.binary for pi in cache.setup()})
def test_pants_run_interpreter_selection_with_pexrc(self):
py27_path, py3_path = python_interpreter_path(PY_27), python_interpreter_path(PY_3)
with setup_pexrc_with_pex_python_path([py27_path, py3_path]):
with temporary_dir() as interpreters_cache:
pants_ini_config = {'python-setup': {'interpreter_cache_dir': interpreters_cache}}
pants_run_27 = self.run_pants(
command=['run', '{}:main_py2'.format(os.path.join(self.testproject,
'python_3_selection_testing'))],
config=pants_ini_config
)
self.assert_success(pants_run_27)
self.assertIn('I am a python 2 library method.', pants_run_27.stdout_data)
pants_run_3 = self.run_pants(
command=['run', '{}:main_py3'.format(os.path.join(self.testproject,
'python_3_selection_testing'))],
config=pants_ini_config
)
self.assert_success(pants_run_3)
self.assertIn('I am a python 3 library method.', pants_run_3.stdout_data)
def test_exact_requirements_interpreter_change(self, unused_test_name,
packager_cls):
python36 = PythonInterpreter.from_binary(
python_interpreter_path(PY_36))
python37 = PythonInterpreter.from_binary(
python_interpreter_path(PY_37))
with self.plugin_resolution(interpreter=python36,
plugins=[('jake', '1.2.3'),
('jane', '3.4.5')],
packager_cls=packager_cls) as results:
working_set, chroot, repo_dir, cache_dir = results
self.assertEqual(2, len(working_set.entries))
safe_rmtree(repo_dir)
with self.assertRaises(Unsatisfiable):
with self.plugin_resolution(interpreter=python37,
chroot=chroot,
plugins=[('jake', '1.2.3'),
('jane', '3.4.5')]):
self.fail(
'Plugin re-resolution is expected for an incompatible interpreter and it is '
'expected to fail since we removed the dist `repo_dir` above.'
)
# But for a compatible interpreter the exact resolve results should be re-used and load
# directly from the still in-tact cache.
with self.plugin_resolution(interpreter=python36,
chroot=chroot,
plugins=[('jake', '1.2.3'),
('jane', '3.4.5')
]) as results2:
working_set2, _, _, _ = results2
self.assertEqual(working_set.entries, working_set2.entries)