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Merge pull request #1732 from fperez/cellmagics...
Merge pull request #1732 from fperez/cellmagics Refactoring of the magics system and implementation of cell magics. This PR completely refactors the magic system, finally moving the magic objects to standalone, independent objects instead of being the mixin class we'd had since the beginning of IPython. Now, a separate base class is provided in IPython.core.magic.Magics that users can subclass to create their own magics. Decorators are also provided to create magics from simple functions without the need for object orientation. All builtin magics now exist in a few subclasses that group together related functionality, and the new IPython.core.magics package has been created to organize this into smaller files. This cleanup was the last major piece of deep refactoring needed from the original 2001 codebase. Secondly, this PR introduces a new type of magic function, prefixed with `%%` instead of `%`, which operates at the cell level. A cell magic receives two arguments: the line it is called on (like a line magic) and the body of the cell below it. Cell magics are most natural in the notebook, but they also work in the terminal and qt console, with the usual approach of using a blank line to signal cell termination. This PR closes #1611, or IPEP 1, where the design had been discussed.

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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
cp.check_cache()
for k in linecache.cache:
if k.startswith('<ipython-input-99'):
break
else:
raise AssertionError('Entry for input-99 missing from linecache')