Process executor for tests.
Maybe you want to be able to start database only when you start your program, or maybe you need just to set up additional processes for your tests, this is where you should consider using mirakuru, to add superpowers to your program, or tests.
As developers, we have to work on project that rely on multiple processes to run. We guard ourselves with tests. But sometimes it’s not enough what one process sends, and the other receives. Sometimes there’s need to actually exchange data between processes. Or write selenium tests. Or maybe write a program that takes care of starting databases or other required services itself.
If so, then mirakuru is what you need.
Mirakuru starts your required process, and wait for clear indication, that it’s running. There are three basic executors with predefined conditions:
Executor - simply starts
OutputExecutor - awaits for specified output to be given by process
TCPExecutor - waits for ability to connect through tcp with process
HTTPExecutor - waits for successful HEAD request (and tcp before).
from mirakuru import HTTPExecutor
from httplib import HTTPConnection, OK
executor = HTTPExecutor("./server", url="http://localhost:6543/")
# start and wait for it to run
# should be running!
conn = HTTPConnection("localhost", 6543)
assert conn.getresponse().status is OK
The server command in this case is just a bash script that sleeps for some time and then launches the builtin SimpleHTTPServer on port 6543.
mirakuru is licensed under LGPL license, version 3.
Contributing and reporting bugs
When contributing, don’t forget to add your name to AUTHORS.rst file.
[fix] - kill all children processes of Exeutor started with shell=True
[feature] executors are now context managers - to start executors for given context
[feature] Executor.stopped - context manager for stopping executors for given context
[feature] HTTPExecutor and TCPExecutor before .start() check whether port is already used by other processes and raise AlreadyRunning if detects it
moved python version conditional imports into compat.py module
fix issue where setting shell to True would execute only part of the command.
fix issue where OutputExecutor would hang, if started process stopped producing output
[fix] removed leftover sleep from TCPExecutor._wait_for_connection
updated packaging options
exposed process attribute on Executor
exposed port and host on TCPExecutor
exposed url on HTTPExecutor
simplified package structure
simplified executors operating api
added docblocks for every function
applied license headers
forked off from summon_process
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