@get_user_fixtures
def test_get_user_calls_split_user(util):
    util.user.split_user.return_value = {
        'username': 'fred', 'domain': 'hypothes.is'}

    accounts.get_user('acct:fred@hypothes.is', mock.Mock())

    util.user.split_user.assert_called_once_with('acct:fred@hypothes.is')
Create a BigQueryClient.
dataset/ETHPy150Open hypothesis/h/h/accounts/test/__init___test.py/test_get_user_calls_split_user--crossover with--dataset/ETHPy150Open google/grr/grr/lib/bigquery.py/GetBigQueryClient