[Bug 1259721] Re: Executing autopilot test suite fails to close when piped to tee

[Martin Pitt]

launch_uris() indeed inherits stdout/stderr to the child, which is
usually what you want. But not in this case, when we exit the parent
process before the child.

The launch_uris_as_manager() method gives more flexibility, in
particular you can give custom GLib.SpawnFlags to it (launch_uris() just
uses GLib.SpawnFlags.SEARCH_PATH). Unfortunately this is currently
rather awkward to use from Python as it's missing some annotations:

$ python -c "from gi.repository import GLib, Gio; Gio.DesktopAppInfo.new('gcalctool.desktop').launch_uris_as_manager([], None, GLib.SpawnFlags.STDOUT_TO_DEV_NULL, None, None, None, None)" | tee /tmp/foo
Traceback (most recent call last):
  File "<string>", line 1, in <module>
TypeError: Argument 2 does not allow None as a value

If I hack the annotations to add the missing allow-none's, it works
fine:

$ python -c "from gi.repository import GLib, Gio;
Gio.DesktopAppInfo.new('gcalctool.desktop').launch_uris_as_manager([],
None, GLib.SpawnFlags.SEARCH_PATH | GLib.SpawnFlags.STDOUT_TO_DEV_NULL,
None, None, None, None)" | tee /tmp/foo

This now immediately returns.

** Also affects: glib2.0 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: glib2.0 (Ubuntu)
   Importance: Undecided => Medium

** Changed in: glib2.0 (Ubuntu)
       Status: New => In Progress

** Changed in: glib2.0 (Ubuntu)
     Assignee: (unassigned) => Martin Pitt (pitti)

** Package changed: glib2.0 (Ubuntu) => glib

** Also affects: gobject-introspection (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1259721

Title:
  Executing autopilot test suite fails to close when piped to tee

Status in Autopilot:
  Confirmed
Status in The "G" Library - GLib:
  In Progress
Status in “gobject-introspection” package in Ubuntu:
  In Progress

Bug description:
  Executing "autopilot run autopilot | tee /tmp/autopilot.log" never
  closes on my trusty box. The autopilot process closes (according to
  "ps -ef") but the tee process stays open. It appears that tee is
  missing the EOF.

  I originally saw this on the CI autopilot runner:
  http://s-jenkins.ubuntu-ci:8080/job/autopilot-testrunner-otto-trusty/1390/console

  
  It appears I'm running an unreleased version:
  python-autopilot:
    Installed: 1.4+14.04.20131205.1-0ubuntu1

  python-autopilot-tests:
    Installed: 1.4+14.04.20131206.1-0ubuntu1

  Will try again with the archive version and update the report.

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