def __init__(self, impl_paths, path, release_track, construction_id,
cli_generator, parser_group, parent_group=None,
allow_empty=False):
"""Create a new command group.
Args:
impl_paths: [str], A list of file paths to the command implementation for
this group.
path: [str], A list of group names that got us down to this command group
with respect to the CLI itself. This path should be used for things
like error reporting when a specific element in the tree needs to be
referenced.
release_track: base.ReleaseTrack, The release track (ga, beta, alpha) that
this command group is in. This will apply to all commands under it.
construction_id: str, A unique identifier for the CLILoader that is
being constructed.
cli_generator: cli.CLILoader, The builder used to generate this CLI.
parser_group: the current argparse parser, or None if this is the root
command group. The root command group will allocate the initial
top level argparse parser.
parent_group: CommandGroup, The parent of this group. None if at the
root.
allow_empty: bool, True to allow creating this group as empty to start
with.
Raises:
LayoutException: if the module has no sub groups or commands
"""
common_type = command_loading.LoadCommonType(
impl_paths, path, release_track, construction_id, is_command=False)
super(CommandGroup, self).__init__(
common_type,
path=path,
release_track=release_track,
cli_generator=cli_generator,
allow_positional_args=False,
parser_group=parser_group,
parent_group=parent_group)
self._construction_id = construction_id
# find sub groups and commands
self.groups = {}
self.commands = {}
self._groups_to_load = {}
self._commands_to_load = {}
self._unloadable_elements = set()
group_infos, command_infos = command_loading.FindSubElements(impl_paths,
path)
self._groups_to_load.update(group_infos)
self._commands_to_load.update(command_infos)
if (not allow_empty and
not self._groups_to_load and not self._commands_to_load):
raise command_loading.LayoutException(
'Group {0} has no subgroups or commands'.format(self.dotted_name))
# Initialize the sub-parser so sub groups can be found.
self.SubParser()
def testNoGroups(self):
with self.assertRaisesRegex(
command_loading.CommandLoadFailure,
r'Problem loading foo.bar: Command groups cannot be implemented in '
r'yaml.'):
command_loading.LoadCommonType(['dir/foo/bar.yaml'],
['foo', 'bar'],
calliope_base.ReleaseTrack.GA,
'id',
is_command=False)
with self.assertRaisesRegex(
command_loading.CommandLoadFailure,
r'Problem loading foo.bar: Command groups cannot be implemented in '
r'yaml.'):
command_loading.FindSubElements(
['dir/foo/bar.py', 'dir/foo/bar.yaml'], ['foo', 'bar'])
