upstream/ipython Files · IPython/core/tests/obj_del.py

Merging -r 1196 from lp:ipython....

Merging -r 1196 from lp:ipython. A couple of issues came up: * Some tests in testing and frontend rely on twisted, but are being tested with nose. This is bad! We currently have hackish logic in iptest to skip these if twisted is not installed, but if it is we are testing them with nose! * Some modules (engineservice, kernel/error, newserialized) have nose skip logic even though they should never be tested with nose. * When trial is run on testStrictDict we get an uncaught error. testStrictDict ... ERROR: An unexpected error occurred while tokenizing input The following traceback may be corrupted or invalid The error message is: ('EOF in multi-line statement', (37, 0))

Brian Granger - - Load All Authors

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      """Test code for https://bugs.launchpad.net/ipython/+bug/239054

      WARNING: this script exits IPython!  It MUST be run in a subprocess.

      When you run the following script from CPython it prints:

      __init__ is here

      __del__ is here

      and creates the __del__.txt file

      When you run it from IPython it prints:

      __init__ is here

      When you exit() or Exit from IPython neothing is printed and no file is created

      (the file thing is to make sure __del__ is really never called and not that

      just the output is eaten).

      Note that if you call %reset in IPython then everything is Ok.

      IPython should do the equivalent of %reset and release all the references it

      holds before exit. This behavior is important when working with binding objects

      that rely on __del__. If the current behavior has some use case then I suggest

      to add a configuration option to IPython to control it.

      """

      import sys

      class A(object):

          def __del__(self):

              print 'obj_del.py: object A deleted'

      a = A()

      # Now, we force an exit, the caller will check that the del printout was given

      _ip.IP.ask_exit()

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				"""Test code for https://bugs.launchpad.net/ipython/+bug/239054

				WARNING: this script exits IPython! It MUST be run in a subprocess.

				When you run the following script from CPython it prints:
				__init__ is here
				__del__ is here

				and creates the __del__.txt file

				When you run it from IPython it prints:
				__init__ is here

				When you exit() or Exit from IPython neothing is printed and no file is created
				(the file thing is to make sure __del__ is really never called and not that
				just the output is eaten).

				Note that if you call %reset in IPython then everything is Ok.

				IPython should do the equivalent of %reset and release all the references it
				holds before exit. This behavior is important when working with binding objects
				that rely on __del__. If the current behavior has some use case then I suggest
				to add a configuration option to IPython to control it.
				"""
				import sys

				class A(object):
				def __del__(self):
				print 'obj_del.py: object A deleted'

				a = A()

				# Now, we force an exit, the caller will check that the del printout was given
				_ip.IP.ask_exit()