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import unittest
import unittest.mock
import sys
import os
def reset_import_and_get_fresh_config():
# Reloads the clang.cindex module to reset any class-level state in Config.
sys.modules.pop("clang.cindex", None)
sys.modules.pop("clang", None)
from clang.cindex import Config
return Config()
class TestEnvironementVariable(unittest.TestCase):
def test_working_libclang_library_file(self):
ref_libclang_library_file = reset_import_and_get_fresh_config().get_filename()
with unittest.mock.patch.dict(
os.environ, {"LIBCLANG_LIBRARY_FILE": ref_libclang_library_file}
):
reset_import_and_get_fresh_config().lib
@unittest.mock.patch.dict("os.environ", {"LIBCLANG_LIBRARY_FILE": "/dev/null"})
def test_non_working_libclang_library_file(self):
config = reset_import_and_get_fresh_config()
import clang.cindex
with self.assertRaises(clang.cindex.LibclangError):
config.lib
def test_working_libclang_library_path(self):
# Get adequate libclang path
ref_libclang_library_file = reset_import_and_get_fresh_config().get_filename()
ref_libclang_library_path, filename = os.path.split(ref_libclang_library_file)
filename_root, filename_ext = os.path.splitext(filename)
# Config only recognizes the default libclang filename.
# If LIBCLANG_LIBRARY_FILE points to a non-standard name, skip this test.
if not (
filename_root == "libclang" and filename_ext in (".so", ".dll", ".dylib")
):
self.skipTest(f"Skipping because {filename} is not a default libclang name")
with unittest.mock.patch.dict(
os.environ, {"LIBCLANG_LIBRARY_PATH": ref_libclang_library_path}
):
# Remove LIBCLANG_LIBRARY_FILE to avoid it taking precedence if set by the user
# Need to be in the mocked environement
os.environ.pop("LIBCLANG_LIBRARY_FILE", None)
reset_import_and_get_fresh_config().lib
@unittest.mock.patch.dict("os.environ", {"LIBCLANG_LIBRARY_PATH": "not_a_real_dir"})
def test_non_working_libclang_library_path(self):
# Remove LIBCLANG_LIBRARY_FILE to avoid it taking precedence if set by the user
os.environ.pop("LIBCLANG_LIBRARY_FILE", None)
config = reset_import_and_get_fresh_config()
import clang.cindex
with self.assertRaises(clang.cindex.LibclangError):
config.lib
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