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test/py: optionally ignore errors from shell commands

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Sometimes it's useful to run shell commands and ignore any errors. One
example might be cleanup logic; if a test-case experiences an error, the
cleanup logic might experience an error too, and we don't want that error
to mask the original error, so we want to ignore the subsequent error.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Stephen Warren 2016-01-22 12:30:11 -07:00 committed by Simon Glass
parent 783cbcd360
commit 3f2faf7327
1 changed files with 6 additions and 2 deletions
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8
test/py/multiplexed_log.py
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@ -106,13 +106,17 @@ class RunAndLog(object):
'''Clean up any resources managed by this object.'''
pass
def run(self, cmd, cwd=None):
def run(self, cmd, cwd=None, ignore_errors=False):
'''Run a command as a sub-process, and log the results.
Args:
cmd: The command to execute.
cwd: The directory to run the command in. Can be None to use the
current directory.
ignore_errors: Indicate whether to ignore errors. If True, the
function will simply return if the command cannot be executed
or exits with an error code, otherwise an exception will be
raised if such problems occur.
Returns:
Nothing.
@ -148,7 +152,7 @@ class RunAndLog(object):
exception = e
if output and not output.endswith('\n'):
output += '\n'
if exit_status and not exception:
if exit_status and not exception and not ignore_errors:
exception = Exception('Exit code: ' + str(exit_status))
if exception:
output += str(exception) + '\n'