Python contextlib._GeneratorContextManager() Examples

The following are 5 code examples of contextlib._GeneratorContextManager(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module contextlib , or try the search function .
Example #1
Source File: contexts.py    From easypy with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up 
def __call__(self, func):
        if isgeneratorfunction(func):
            def inner(*args, **kwds):
                with self._recreate_cm():
                    yield from func(*args, **kwds)
        elif is_contextmanager(func):
            @contextmanager
            def inner(*args, **kwds):
                with self._recreate_cm():
                    with func(*args, **kwds) as ret:
                        yield ret
        else:
            def inner(*args, **kwds):
                with self._recreate_cm():
                    return func(*args, **kwds)
        return wraps(func)(inner)


# Some python version have a different signature for '_GeneratorContextManager.__init__', so we must adapt:
Example #2
Source File: test_profiles.py    From python-libmaas with GNU Affero General Public License v3.0 5 votes vote down vote up 
def test_open_and_close(self):
        # ProfileStore.open() returns a context manager that closes the
        # database on exit.
        config_file = self.makeDir().joinpath("config")
        config = ProfileStore.open(config_file)
        self.assertIsInstance(config, contextlib._GeneratorContextManager)
        with config as config:
            self.assertIsInstance(config, ProfileStore)
            self.assertEqual((1,), config.database.execute("SELECT 1").fetchone())
        self.assertRaises(sqlite3.ProgrammingError, config.database.execute, "SELECT 1")
Example #3
Source File: test_config.py    From maas with GNU Affero General Public License v3.0 5 votes vote down vote up 
def test_open_and_close(self):
        # ProfileConfig.open() returns a context manager that closes the
        # database on exit.
        config_file = os.path.join(self.make_dir(), "config")
        config = api.ProfileConfig.open(config_file, create=True)
        self.assertIsInstance(config, contextlib._GeneratorContextManager)
        with config as config:
            self.assertIsInstance(config, api.ProfileConfig)
            with config.cursor() as cursor:
                self.assertEqual((1,), cursor.execute("SELECT 1").fetchone())
        self.assertRaises(sqlite3.ProgrammingError, config.cursor)
Example #4
Source File: test_config.py    From maas with GNU Affero General Public License v3.0 5 votes vote down vote up 
def test_open_and_close(self):
        # ConfigurationDatabase.open() returns a context manager that closes
        # the database on exit.
        config_file = os.path.join(self.make_dir(), "config")
        config = ConfigurationDatabase.open_for_update(config_file)
        self.assertIsInstance(config, contextlib._GeneratorContextManager)
        with config as config:
            self.assertIsInstance(config, ConfigurationDatabase)
            with config.cursor() as cursor:
                self.assertEqual((1,), cursor.execute("SELECT 1").fetchone())
        self.assertRaises(sqlite3.ProgrammingError, config.cursor)
Example #5
Source File: test_config.py    From maas with GNU Affero General Public License v3.0 5 votes vote down vote up 
def test_open_and_close(self):
        # ConfigurationFile.open() returns a context manager.
        config_file = os.path.join(self.make_dir(), "config")
        config_ctx = ConfigurationFile.open(config_file)
        self.assertIsInstance(config_ctx, contextlib._GeneratorContextManager)
        with config_ctx as config:
            self.assertIsInstance(config, ConfigurationFile)
            self.assertThat(config_file, FileExists())
            self.assertEqual({}, config.config)
            self.assertFalse(config.dirty)
        self.assertThat(config_file, FileContains(""))