##// END OF EJS Templates
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.

File last commit:

r9140:06edb0ca
r22317:68860ee5
Show More
test_compilerop.py
75 lines | 2.3 KiB | text/x-python | PythonLexer
# coding: utf-8
"""Tests for the compilerop module.
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2010-2011 The IPython Development Team.
#
# Distributed under the terms of the BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from __future__ import print_function
# Stdlib imports
import linecache
import sys
# Third-party imports
import nose.tools as nt
# Our own imports
from IPython.core import compilerop
from IPython.utils import py3compat
#-----------------------------------------------------------------------------
# Test functions
#-----------------------------------------------------------------------------
def test_code_name():
code = 'x=1'
name = compilerop.code_name(code)
nt.assert_true(name.startswith('<ipython-input-0'))
def test_code_name2():
code = 'x=1'
name = compilerop.code_name(code, 9)
nt.assert_true(name.startswith('<ipython-input-9'))
def test_cache():
"""Test the compiler correctly compiles and caches inputs
"""
cp = compilerop.CachingCompiler()
ncache = len(linecache.cache)
cp.cache('x=1')
nt.assert_true(len(linecache.cache) > ncache)
def setUp():
# Check we're in a proper Python 2 environment (some imports, such
# as GTK, can change the default encoding, which can hide bugs.)
nt.assert_equal(sys.getdefaultencoding(), "utf-8" if py3compat.PY3 else "ascii")
def test_cache_unicode():
cp = compilerop.CachingCompiler()
ncache = len(linecache.cache)
cp.cache(u"t = 'žćčšđ'")
nt.assert_true(len(linecache.cache) > ncache)
def test_compiler_check_cache():
"""Test the compiler properly manages the cache.
"""
# Rather simple-minded tests that just exercise the API
cp = compilerop.CachingCompiler()
cp.cache('x=1', 99)
# Ensure now that after clearing the cache, our entries survive
linecache.checkcache()
for k in linecache.cache:
if k.startswith('<ipython-input-99'):
break
else:
raise AssertionError('Entry for input-99 missing from linecache')