import pytest

from util.config.validator import ValidatorContext
from util.config.validators import ConfigValidationException
from util.config.validators.validate_keystone import KeystoneValidator

from test.test_keystone_auth import fake_keystone

from test.fixtures import *

@pytest.mark.parametrize('unvalidated_config', [
  ({}),
  ({'AUTHENTICATION_TYPE': 'Database'}),
])
def test_validate_noop(unvalidated_config, app):
  KeystoneValidator.validate(ValidatorContext(unvalidated_config))

@pytest.mark.parametrize('unvalidated_config', [
  ({'AUTHENTICATION_TYPE': 'Keystone'}),
  ({'AUTHENTICATION_TYPE': 'Keystone', 'KEYSTONE_AUTH_URL': 'foo'}),
  ({'AUTHENTICATION_TYPE': 'Keystone', 'KEYSTONE_AUTH_URL': 'foo',
    'KEYSTONE_ADMIN_USERNAME': 'bar'}),
  ({'AUTHENTICATION_TYPE': 'Keystone', 'KEYSTONE_AUTH_URL': 'foo',
    'KEYSTONE_ADMIN_USERNAME': 'bar', 'KEYSTONE_ADMIN_PASSWORD': 'baz'}),
])
def test_invalid_config(unvalidated_config, app):
  with pytest.raises(ConfigValidationException):
    KeystoneValidator.validate(ValidatorContext(unvalidated_config))


@pytest.mark.parametrize('admin_tenant_id, expected_exception', [
  ('somegroupid', None),
  ('groupwithnousers', ConfigValidationException),
  ('somegroupid', None),
  ('groupwithnousers', ConfigValidationException),
])
def test_validated_keystone(admin_tenant_id, expected_exception, app):
  with fake_keystone(2) as keystone_auth:
    auth_url = keystone_auth.auth_url

    config = {}
    config['AUTHENTICATION_TYPE'] = 'Keystone'
    config['KEYSTONE_AUTH_URL'] = auth_url
    config['KEYSTONE_ADMIN_USERNAME'] = 'adminuser'
    config['KEYSTONE_ADMIN_PASSWORD'] = 'adminpass'
    config['KEYSTONE_ADMIN_TENANT'] = admin_tenant_id

    unvalidated_config = ValidatorContext(config)

    if expected_exception is not None:
      with pytest.raises(ConfigValidationException):
        KeystoneValidator.validate(unvalidated_config)
    else:
      KeystoneValidator.validate(unvalidated_config)