[tor-bugs] #23314 [Core Tor/Stem]: `make test-stem` starts up tor on 9050: Address already in use

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#23314: `make test-stem` starts up tor on 9050: Address already in use
-------------------------------+----------------------------
     Reporter:  asn            |      Owner:  atagar
         Type:  defect         |     Status:  new
     Priority:  Medium         |  Milestone:
    Component:  Core Tor/Stem  |    Version:
     Severity:  Normal         |   Keywords:  tor-tests stem
Actual Points:                 |  Parent ID:
       Points:  0.1            |   Reviewer:
      Sponsor:                 |
-------------------------------+----------------------------
 I tried to run the little-t-tor stem tests using `make test-stem`. The
 unittests finished successfuly but all the integration tests failed
 because stem couldn't start up tor. It was trying to launch tor with a
 socksport on 9050 but it was failing because my system tor was already
 occupying that port:

 {{{
 ======================================================================
                           INTEGRATION TESTS
 ======================================================================

 Setting up a test instance...
   making test directory (/home/f/Computers/tor/stem/test/data)... done
   configuring logger (/home/f/Computers/tor/stem/test/data/log)... done
   writing torrc (/home/f/Computers/tor/stem/test/data/torrc)... done
     # configuration for stem integration tests
     DataDirectory /home/f/Computers/tor/stem/test/data
     SocksListenAddress 127.0.0.1:1112
     DownloadExtraInfo 1
     Log notice stdout
     Log notice file /home/f/Computers/tor/stem/test/data/tor_log

 Starting ./src/or/tor...

   Aug 24 14:20:28.564 [notice] Tor 0.3.2.0-alpha-dev (git-
 40acdc357e08ab03) running on Linux with Libevent 2.0.21-stable, OpenSSL
 1.0.1t, Zlib 1.2.8, Liblzma N/A, and Libzstd N/A.
   Aug 24 14:20:28.564 [notice] Tor can't help you if you use it wrong!
 Learn how to be safe at
 https://www.torproject.org/download/download#warning
   Aug 24 14:20:28.564 [notice] This version is not a stable Tor release.
 Expect more bugs than usual.
   Aug 24 14:20:28.564 [notice] Read configuration file
 "/home/f/Computers/tor/stem/test/data/torrc".
   Aug 24 14:20:28.567 [warn] Skipping obsolete configuration option
 'SocksListenAddress'
   Aug 24 14:20:28.567 [notice] Opening Socks listener on 127.0.0.1:9050
   Aug 24 14:20:28.567 [warn] Could not bind to 127.0.0.1:9050: Address
 already in use. Is Tor already running?
   Aug 24 14:20:28.567 [warn] Failed to parse/validate config: Failed to
 bind one of the listener ports.
   Aug 24 14:20:28.567 [err] Reading config failed--see warnings above.
   failed to start tor: Process terminated: Failed to bind one of the
 listener ports.


 Shutting down tor... done
 }}}

 I think stem should start up tor on a different non-default port, or just
 use `SocksPort auto`.

 Cheers!

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23314>
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