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from . import util
import imp
import importlib
import sys
import unittest
class ImportModuleTests(unittest.TestCase):
"""Test importlib.import_module."""
def test_module_import(self):
# Test importing a top-level module.
with util.mock_modules('top_level') as mock:
with util.import_state(meta_path=[mock]):
module = importlib.import_module('top_level')
self.assertEqual(module.__name__, 'top_level')
def test_absolute_package_import(self):
# Test importing a module from a package with an absolute name.
pkg_name = 'pkg'
pkg_long_name = '{0}.__init__'.format(pkg_name)
name = '{0}.mod'.format(pkg_name)
with util.mock_modules(pkg_long_name, name) as mock:
with util.import_state(meta_path=[mock]):
module = importlib.import_module(name)
self.assertEqual(module.__name__, name)
def test_relative_package_import(self):
# Test importing a module from a package through a relatve import.
pkg_name = 'pkg'
pkg_long_name = '{0}.__init__'.format(pkg_name)
module_name = 'mod'
absolute_name = '{0}.{1}'.format(pkg_name, module_name)
relative_name = '.{0}'.format(module_name)
with util.mock_modules(pkg_long_name, absolute_name) as mock:
with util.import_state(meta_path=[mock]):
importlib.import_module(pkg_name)
module = importlib.import_module(relative_name, pkg_name)
self.assertEqual(module.__name__, absolute_name)
def test_absolute_import_with_package(self):
# Test importing a module from a package with an absolute name with
# the 'package' argument given.
pkg_name = 'pkg'
pkg_long_name = '{0}.__init__'.format(pkg_name)
name = '{0}.mod'.format(pkg_name)
with util.mock_modules(pkg_long_name, name) as mock:
with util.import_state(meta_path=[mock]):
importlib.import_module(pkg_name)
module = importlib.import_module(name, pkg_name)
self.assertEqual(module.__name__, name)
def test_relative_import_wo_package(self):
# Relative imports cannot happen without the 'package' argument being
# set.
self.assertRaises(TypeError, importlib.import_module, '.support')
def test_main():
from test.support import run_unittest
run_unittest(ImportModuleTests)
if __name__ == '__main__':
test_main()
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