def test_log_no_files():
    assert_command(['dcos', 'task', 'log', 'bogus'],
                   returncode=1,
                   stderr=b'No matching tasks. Exiting.\n')
For intercepted unary operator calls (:meth:`intercepted_unops`)
dataset/ETHPy150Open dcos/dcos-cli/cli/tests/integrations/test_task.py/test_log_no_files--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/jinja2-2.6/jinja2/sandbox.py/SandboxedEnvironment.call_unop