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"""Tests for googleclouddebugger.module_utils."""
import os
import sys
import tempfile
from absl.testing import absltest
from googleclouddebugger import module_utils
class TestModule(object):
"""Dummy class with __name__ and __file__ attributes."""
def __init__(self, name, path):
self.__name__ = name
self.__file__ = path
def _AddSysModule(name, path):
sys.modules[name] = TestModule(name, path)
class ModuleUtilsTest(absltest.TestCase):
def setUp(self):
self._test_package_dir = tempfile.mkdtemp('', 'package_')
self.modules = sys.modules.copy()
def tearDown(self):
sys.modules = self.modules
self.modules = None
def _CreateFile(self, path):
full_path = os.path.join(self._test_package_dir, path)
directory, unused_name = os.path.split(full_path)
if not os.path.isdir(directory):
os.makedirs(directory)
with open(full_path, 'w') as writer:
writer.write('')
return full_path
def _CreateSymLink(self, source, link_name):
full_source_path = os.path.join(self._test_package_dir, source)
full_link_path = os.path.join(self._test_package_dir, link_name)
os.symlink(full_source_path, full_link_path)
return full_link_path
def _AssertEndsWith(self, a, b, msg=None):
"""Assert that string a ends with string b."""
if not a.endswith(b):
standard_msg = '%s does not end with %s' % (a, b)
self.fail(self._formatMessage(msg, standard_msg))
def testSimpleLoadedModuleFromSuffix(self):
# Lookup simple module.
_AddSysModule('m1', '/a/b/p1/m1.pyc')
for suffix in [
'm1.py', 'm1.pyc', 'm1.pyo', 'p1/m1.py', 'b/p1/m1.py', 'a/b/p1/m1.py',
'/a/b/p1/m1.py'
]:
m1 = module_utils.GetLoadedModuleBySuffix(suffix)
self.assertTrue(m1, 'Module not found')
self.assertEqual('/a/b/p1/m1.pyc', m1.__file__)
# Lookup simple package, no ext.
_AddSysModule('p1', '/a/b/p1/__init__.pyc')
for suffix in [
'p1/__init__.py', 'b/p1/__init__.py', 'a/b/p1/__init__.py',
'/a/b/p1/__init__.py'
]:
p1 = module_utils.GetLoadedModuleBySuffix(suffix)
self.assertTrue(p1, 'Package not found')
self.assertEqual('/a/b/p1/__init__.pyc', p1.__file__)
# Lookup via bad suffix.
for suffix in [
'm2.py', 'p2/m1.py', 'b2/p1/m1.py', 'a2/b/p1/m1.py', '/a2/b/p1/m1.py'
]:
m1 = module_utils.GetLoadedModuleBySuffix(suffix)
self.assertFalse(m1, 'Module found unexpectedly')
def testComplexLoadedModuleFromSuffix(self):
# Lookup complex module.
_AddSysModule('b.p1.m1', '/a/b/p1/m1.pyc')
for suffix in [
'm1.py', 'p1/m1.py', 'b/p1/m1.py', 'a/b/p1/m1.py', '/a/b/p1/m1.py'
]:
m1 = module_utils.GetLoadedModuleBySuffix(suffix)
self.assertTrue(m1, 'Module not found')
self.assertEqual('/a/b/p1/m1.pyc', m1.__file__)
# Lookup complex package, no ext.
_AddSysModule('a.b.p1', '/a/b/p1/__init__.pyc')
for suffix in [
'p1/__init__.py', 'b/p1/__init__.py', 'a/b/p1/__init__.py',
'/a/b/p1/__init__.py'
]:
p1 = module_utils.GetLoadedModuleBySuffix(suffix)
self.assertTrue(p1, 'Package not found')
self.assertEqual('/a/b/p1/__init__.pyc', p1.__file__)
def testSimilarLoadedModuleFromSuffix(self):
# Lookup similar module, no ext.
_AddSysModule('m1', '/a/b/p2/m1.pyc')
_AddSysModule('p1.m1', '/a/b1/p1/m1.pyc')
_AddSysModule('b.p1.m1', '/a1/b/p1/m1.pyc')
_AddSysModule('a.b.p1.m1', '/a/b/p1/m1.pyc')
m1 = module_utils.GetLoadedModuleBySuffix('/a/b/p1/m1.py')
self.assertTrue(m1, 'Module not found')
self.assertEqual('/a/b/p1/m1.pyc', m1.__file__)
# Lookup similar package, no ext.
_AddSysModule('p1', '/a1/b1/p1/__init__.pyc')
_AddSysModule('b.p1', '/a1/b/p1/__init__.pyc')
_AddSysModule('a.b.p1', '/a/b/p1/__init__.pyc')
p1 = module_utils.GetLoadedModuleBySuffix('/a/b/p1/__init__.py')
self.assertTrue(p1, 'Package not found')
self.assertEqual('/a/b/p1/__init__.pyc', p1.__file__)
def testDuplicateLoadedModuleFromSuffix(self):
# Lookup name dup module and package.
_AddSysModule('m1', '/m1/__init__.pyc')
_AddSysModule('m1.m1', '/m1/m1.pyc')
_AddSysModule('m1.m1.m1', '/m1/m1/m1/__init__.pyc')
_AddSysModule('m1.m1.m1.m1', '/m1/m1/m1/m1.pyc')
# Ambiguous request, multiple modules might have matched.
m1 = module_utils.GetLoadedModuleBySuffix('/m1/__init__.py')
self.assertTrue(m1, 'Package not found')
self.assertIn(m1.__file__, ['/m1/__init__.pyc', '/m1/m1/m1/__init__.pyc'])
# Ambiguous request, multiple modules might have matched.
m1m1 = module_utils.GetLoadedModuleBySuffix('/m1/m1.py')
self.assertTrue(m1m1, 'Module not found')
self.assertIn(m1m1.__file__, ['/m1/m1.pyc', '/m1/m1/m1/m1.pyc'])
# Not ambiguous. Only 1 match possible.
m1m1m1 = module_utils.GetLoadedModuleBySuffix('/m1/m1/m1/__init__.py')
self.assertTrue(m1m1m1, 'Package not found')
self.assertEqual('/m1/m1/m1/__init__.pyc', m1m1m1.__file__)
# Not ambiguous. Only 1 match possible.
m1m1m1m1 = module_utils.GetLoadedModuleBySuffix('/m1/m1/m1/m1.py')
self.assertTrue(m1m1m1m1, 'Module not found')
self.assertEqual('/m1/m1/m1/m1.pyc', m1m1m1m1.__file__)
def testMainLoadedModuleFromSuffix(self):
# Lookup complex module.
_AddSysModule('__main__', '/a/b/p/m.pyc')
m1 = module_utils.GetLoadedModuleBySuffix('/a/b/p/m.py')
self.assertTrue(m1, 'Module not found')
self.assertEqual('/a/b/p/m.pyc', m1.__file__)
if __name__ == '__main__':
absltest.main()