"""Test main plugin's HookRegistry"""
# Copyright © 2020  Brett Smith
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

import pytest

from . import testutil

from conservancy_beancount import plugin

def hook_names(hooks, key):
    return {type(hook).__name__ for hook in hooks[key]}

def test_default_registrations():
    hooks = plugin.HOOK_REGISTRY.group_by_directive()
    txn_hook_names = hook_names(hooks, 'Transaction')
    assert len(txn_hook_names) >= 2
    assert 'MetaExpenseAllocation' in txn_hook_names
    assert 'MetaTaxImplication' in txn_hook_names

def test_exclude_single():
    hooks = plugin.HOOK_REGISTRY.group_by_directive('-expense-allocation')
    txn_hook_names = hook_names(hooks, 'Transaction')
    assert txn_hook_names
    assert 'MetaExpenseAllocation' not in txn_hook_names

def test_exclude_group_then_include_single():
    hooks = plugin.HOOK_REGISTRY.group_by_directive('-metadata expense-allocation')
    txn_hook_names = hook_names(hooks, 'Transaction')
    assert 'MetaExpenseAllocation' in txn_hook_names
    assert 'MetaTaxImplication' not in txn_hook_names

def test_include_group_then_exclude_single():
    hooks = plugin.HOOK_REGISTRY.group_by_directive('metadata -tax-implication')
    txn_hook_names = hook_names(hooks, 'Transaction')
    assert 'MetaExpenseAllocation' in txn_hook_names
    assert 'MetaTaxImplication' not in txn_hook_names

def test_unknown_group_name():
    with pytest.raises(ValueError):
        plugin.HOOK_REGISTRY.group_by_directive('UnKnownTestGroup')