NPO-Accounting/conservancy_beancount Changeset - 902c313b4dfb

Changeset - 902c313b4dfb

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Brett Smith - 3 years ago 2021-01-09 15:09:08
brettcsmith@brettcsmith.org

cliutil: New function can_run.

2 files changed with 30 insertions and 0 deletions:

conservancy_beancount/cliutil.py

tests/test_cliutil.py

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conservancy_beancount/cliutil.py

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@@ ... / @@ -22,2 +22,3 @@ import re @@
 import signal
 import subprocess
 import sys
@@ ... / @@ -39,2 +40,3 @@ from typing import ( @@
     Callable,
     Container,
     IO,
@@ ... @@
 def can_run(
         cmd: Sequence[str],
         stdout: Optional[int]=subprocess.DEVNULL,
         stderr: Optional[int]=None,
         ok_returncodes: Container[int]=frozenset([0]),
 ) -> bool:
     try:
         with subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=stdout, stderr=stderr) as proc:
             # Typing says this can be None, but I don't think that's true
             # given that we passed stdin=PIPE.
             proc.stdin.close()  # type:ignore[union-attr]
     except (OSError, subprocess.SubprocessError):
         return False
     else:
         return proc.returncode in ok_returncodes
 def date_arg(arg: str) -> datetime.date:

tests/test_cliutil.py

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@@ ... / @@ -22,2 +22,4 @@ from pathlib import Path @@
 from . import testutil
 from conservancy_beancount import cliutil
@@ ... / @@ -229 +231,11 @@ def test_diff_year(date, diff, expected): @@
     assert cliutil.diff_year(date, diff) == expected
 @pytest.mark.parametrize('cmd,expected', [
     (['true'], True),
     (['true', '--version'], True),
     (['false'], False),
     (['false', '--version'], False),
     ([str(testutil.TESTS_DIR)], False),
 ])
 def test_can_run(cmd, expected):
     assert cliutil.can_run(cmd) == expected

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