def test_detect_hooks(self):
"""
Tests whether the future.standard_library.detect_hooks is doing
its job.
"""
standard_library.install_hooks()
if utils.PY2:
self.assertTrue(standard_library.detect_hooks())
meta_path = copy.copy(sys.meta_path)
standard_library.remove_hooks()
if utils.PY2:
self.assertEqual(len(meta_path), len(sys.meta_path) + 1)
self.assertFalse(standard_library.detect_hooks())
def test_detect_hooks(self):
"""
Tests whether the future.standard_library.detect_hooks is doing
its job.
"""
standard_library.install_hooks()
if utils.PY2:
self.assertTrue(standard_library.detect_hooks())
meta_path = copy.copy(sys.meta_path)
standard_library.remove_hooks()
if utils.PY2:
self.assertEqual(len(meta_path), len(sys.meta_path) + 1)
self.assertFalse(standard_library.detect_hooks())
def test_disable_hooks(self):
"""
Tests the old (deprecated) names. These deprecated aliases should be
removed by version 1.0
"""
example_PY2_check = False
standard_library.enable_hooks() # deprecated name
old_meta_path = copy.copy(sys.meta_path)
standard_library.disable_hooks()
standard_library.scrub_future_sys_modules()
if utils.PY2:
self.assertTrue(len(old_meta_path) == len(sys.meta_path) + 1)
else:
self.assertTrue(len(old_meta_path) == len(sys.meta_path))
# An example of fragile import code that we don't want to break:
try:
import builtins
except ImportError:
example_PY2_check = True
if utils.PY2:
self.assertTrue(example_PY2_check)
else:
self.assertFalse(example_PY2_check)
standard_library.install_hooks()
# Imports should succeed again now:
import builtins
import html
if utils.PY2:
self.assertTrue(standard_library.detect_hooks())
self.assertTrue(len(old_meta_path) == len(sys.meta_path))
def test_disable_hooks(self):
"""
Tests the old (deprecated) names. These deprecated aliases should be
removed by version 1.0
"""
example_PY2_check = False
standard_library.enable_hooks() # deprecated name
old_meta_path = copy.copy(sys.meta_path)
standard_library.disable_hooks()
standard_library.scrub_future_sys_modules()
if utils.PY2:
self.assertTrue(len(old_meta_path) == len(sys.meta_path) + 1)
else:
self.assertTrue(len(old_meta_path) == len(sys.meta_path))
# An example of fragile import code that we don't want to break:
try:
import builtins
except ImportError:
example_PY2_check = True
if utils.PY2:
self.assertTrue(example_PY2_check)
else:
self.assertFalse(example_PY2_check)
standard_library.install_hooks()
# Imports should succeed again now:
import builtins
import html
if utils.PY2:
self.assertTrue(standard_library.detect_hooks())
self.assertTrue(len(old_meta_path) == len(sys.meta_path))
