python: Fix teardown of ephemeral contexts.
* lang/python/tests/support.py (EphemeralContext): New function. * lang/python/tests/t-quick-key-creation.py: Use the new function to manage ephemeral contexts. * lang/python/tests/t-quick-key-manipulation.py: Likewise. * lang/python/tests/t-quick-subkey-creation.py: Likewise.
Previously, there was a problem with cleaning up ephemeral home
directories. shutil.rmtree deleted the agents main socket, gpg-agent
detected that, and deleted the other sockets as well, racing
shutil.rmtree which did not cope will with that.
Fix this by asking the agent nicely to shut down.
- Signed-off-by: Justus Winter <justus@g10code.com>