QStandardPaths::RuntimeLocation returns empty string under pbuilder

[Alberto Mardegan]

The unit tests for ubuntu-system-settings-online-accounts are failing when run under pbuilder:

==================
task-0: ********* Start testing of UiProxyTest *********
task-0: Config: Using QtTest library 5.5.1, Qt 5.5.1 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 5.3.1 20160519)
task-0: PASS : UiProxyTest::initTestCase()
task-0: PASS : UiProxyTest::testInit()
task-0: QWARN : UiProxyTest::testRequest(success) QStandardPaths: wrong ownership on runtime directory /run/user/1001, -2 instead of 1234
task-0: QWARN : UiProxyTest::testRequest(success) Couldn't setup IPC socket
task-0: FAIL! : UiProxyTest::testRequest(success) '(!remoteProcesses.isEmpty())' returned FALSE. ()
task-0: Loc: [tst_ui_proxy.cpp(319)]
==================

I've debugged the issue, and I've verified that QStandardPaths::writableLocation(QStandardPaths::RuntimeLocation) is returning an empty string. Although it's documented that in some systems that function can return NULL, it would be better if it didn't :-)

[Alberto Mardegan (mardy)]

I investigated this bug, and it happens because QFileInfo::ownerId() returns -2 while inspecting the runtime directory. The documentation says:

    On Windows and on systems where files do not have owners this
    function returns ((uint) -2).

It's not clear though, why would this be returning -2 under pbuilder, given that the filesystem seems to support ownership.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-system-settings-online-accounts - 0.7+16.10.20161004-0ubuntu1

---------------
ubuntu-system-settings-online-accounts (0.7+16.10.20161004-0ubuntu1) yakkety; urgency=medium

  * Tests: create runtime directory, fix execution under pbuilder (LP:
    #1614108)
  * Build-Depend on upstart to avoid s390x builds on yakkety.

 -- Alberto Mardegan <email address hidden> Tue, 04 Oct 2016 09:33:35 +0000