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fbdb46f5cb
Reviewed By: chadaustin Differential Revision: D17872966 fbshipit-source-id: cd60a364a2146f0dadbeca693b1d4a5d7c97ff63
69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2.
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import abc
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import shlex
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from typing import Any, Optional, Union
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import pexpect
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class PexpectAssertionMixin(metaclass=abc.ABCMeta):
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def assert_process_succeeds(self, process: pexpect.spawn):
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actual_exit_code = wait_for_pexpect_process(process)
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self.assertEqual(
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actual_exit_code,
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0,
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f"Command should return success: {pexpect_process_shell_command(process)}",
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)
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def assert_process_fails(
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self, process: pexpect.spawn, exit_code: Optional[int] = None
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):
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if exit_code is None:
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actual_exit_code = wait_for_pexpect_process(process)
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self.assertNotEqual(
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actual_exit_code,
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0,
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f"Command should return an error code: "
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f"{pexpect_process_shell_command(process)}",
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)
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else:
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self.assert_process_exit_code(process, exit_code)
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def assert_process_exit_code(self, process: pexpect.spawn, exit_code: int):
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actual_exit_code = wait_for_pexpect_process(process)
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self.assertEqual(
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actual_exit_code,
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exit_code,
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f"Command should exit with code {exit_code}: "
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f"{pexpect_process_shell_command(process)}",
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)
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@abc.abstractmethod
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def assertEqual(self, first: Any, second: Any, msg: Any = ...) -> None:
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raise NotImplementedError()
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@abc.abstractmethod
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def assertNotEqual(self, first: Any, second: Any, msg: Any = ...) -> None:
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raise NotImplementedError()
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def pexpect_process_shell_command(process: pexpect.spawn) -> str:
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def str_from_strlike(s: Union[bytes, str]) -> str:
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if isinstance(s, str):
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return s
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else:
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return s.decode("utf-8")
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command_parts = [process.command] + [str_from_strlike(arg) for arg in process.args]
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return " ".join(map(shlex.quote, command_parts))
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def wait_for_pexpect_process(process: pexpect.spawn) -> int:
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process.expect_exact(pexpect.EOF)
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return process.wait()
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