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Make event triggering robust to (un)registration....
Make event triggering robust to (un)registration. Event callbacks can register or unregister new callbacks for the same event while executing, and the previous triggering implementation allowed for event callbacks to be inadvertently skipped. The fix is to make a copy of the list of callbacks before executing any of them. With this change, the resulting semantics are simple: any callbacks registered before triggering are executed, and any new callbacks registered are only visible at the next triggering of the event. Note that this could potentially break existing callers who expected newly-appended callbacks were immediately executed. Fixes #9447. Originally based on a patch by @marksandler2.

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test_shellapp.py
70 lines | 2.7 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
"""Tests for shellapp module.
Authors
-------
* Bradley Froehle
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2012 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import unittest
from IPython.testing import decorators as dec
from IPython.testing import tools as tt
from IPython.utils.py3compat import PY3
sqlite_err_maybe = dec.module_not_available('sqlite3')
SQLITE_NOT_AVAILABLE_ERROR = ('WARNING: IPython History requires SQLite,'
' your history will not be saved\n')
class TestFileToRun(unittest.TestCase, tt.TempFileMixin):
"""Test the behavior of the file_to_run parameter."""
def test_py_script_file_attribute(self):
"""Test that `__file__` is set when running `ipython file.py`"""
src = "print(__file__)\n"
self.mktmp(src)
err = SQLITE_NOT_AVAILABLE_ERROR if sqlite_err_maybe else None
tt.ipexec_validate(self.fname, self.fname, err)
def test_ipy_script_file_attribute(self):
"""Test that `__file__` is set when running `ipython file.ipy`"""
src = "print(__file__)\n"
self.mktmp(src, ext='.ipy')
err = SQLITE_NOT_AVAILABLE_ERROR if sqlite_err_maybe else None
tt.ipexec_validate(self.fname, self.fname, err)
# The commands option to ipexec_validate doesn't work on Windows, and it
# doesn't seem worth fixing
@dec.skip_win32
def test_py_script_file_attribute_interactively(self):
"""Test that `__file__` is not set after `ipython -i file.py`"""
src = "True\n"
self.mktmp(src)
out = 'In [1]: False\n\nIn [2]:'
err = SQLITE_NOT_AVAILABLE_ERROR if sqlite_err_maybe else None
tt.ipexec_validate(self.fname, out, err, options=['-i'],
commands=['"__file__" in globals()', 'exit()'])
@dec.skip_win32
@dec.skipif(PY3)
def test_py_script_file_compiler_directive(self):
"""Test `__future__` compiler directives with `ipython -i file.py`"""
src = "from __future__ import division\n"
self.mktmp(src)
out = 'In [1]: float\n\nIn [2]:'
err = SQLITE_NOT_AVAILABLE_ERROR if sqlite_err_maybe else None
tt.ipexec_validate(self.fname, out, err, options=['-i'],
commands=['type(1/2)', 'exit()'])