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Add some docstrings, clarify others, and fix formatting.

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This commit is contained in:
Eli Bendersky 2013-08-11 16:48:44 -07:00
parent 01ea326a8e
commit 8f2c2bcc9d
1 changed files with 11 additions and 3 deletions
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14
Lib/test/script_helper.py
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@ -39,7 +39,7 @@ def _assert_python(expected_success, *args, **env_vars):
p.stdout.close() p.stdout.close()
p.stderr.close() p.stderr.close()
rc = p.returncode rc = p.returncode
err = strip_python_stderr(err) err = strip_python_stderr(err)
if (rc and expected_success) or (not rc and not expected_success): if (rc and expected_success) or (not rc and not expected_success):
raise AssertionError( raise AssertionError(
"Process return code is %d, " "Process return code is %d, "
@ -49,18 +49,25 @@ def _assert_python(expected_success, *args, **env_vars):
def assert_python_ok(*args, **env_vars): def assert_python_ok(*args, **env_vars):
""" """
Assert that running the interpreter with `args` and optional environment Assert that running the interpreter with `args` and optional environment
variables `env_vars` is ok and return a (return code, stdout, stderr) tuple. variables `env_vars` succeeds (rc == 0) and return a (return code, stdout,
stderr) tuple.
""" """
return _assert_python(True, *args, **env_vars) return _assert_python(True, *args, **env_vars)
def assert_python_failure(*args, **env_vars): def assert_python_failure(*args, **env_vars):
""" """
Assert that running the interpreter with `args` and optional environment Assert that running the interpreter with `args` and optional environment
variables `env_vars` fails and return a (return code, stdout, stderr) tuple. variables `env_vars` fails (rc != 0) and return a (return code, stdout,
stderr) tuple.
""" """
return _assert_python(False, *args, **env_vars) return _assert_python(False, *args, **env_vars)
def spawn_python(*args, **kw): def spawn_python(*args, **kw):
"""Run a Python subprocess with the given arguments.
kw is extra keyword args to pass to subprocess.Popen. Returns a Popen
object.
"""
cmd_line = [sys.executable, '-E'] cmd_line = [sys.executable, '-E']
cmd_line.extend(args) cmd_line.extend(args)
return subprocess.Popen(cmd_line, stdin=subprocess.PIPE, return subprocess.Popen(cmd_line, stdin=subprocess.PIPE,
@ -68,6 +75,7 @@ def spawn_python(*args, **kw):
**kw) **kw)
def kill_python(p): def kill_python(p):
"""Run the given Popen process until completion and return stdout."""
p.stdin.close() p.stdin.close()
data = p.stdout.read() data = p.stdout.read()
p.stdout.close() p.stdout.close()