Merge pull request
#1631 from punchagan/qapplication-exists-test-error...
Merge pull request
#1631 from punchagan/qapplication-exists-test-error
TST: QApplication doesn't quit early enough with PySide
In both tests which create a QApplication, first check whether one already exists, and if so use it. This is an issue with PySide, which unlike PyQt does not delete the QApplication when expected.
Closes
#1628
