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"""Tests for input handlers.
"""
#-----------------------------------------------------------------------------
# Module imports
#-----------------------------------------------------------------------------
# third party
import nose.tools as nt
# our own packages
from IPython.core import autocall
from IPython.testing import tools as tt
from IPython.testing.globalipapp import get_ipython
from IPython.utils import py3compat
#-----------------------------------------------------------------------------
# Globals
#-----------------------------------------------------------------------------
# Get the public instance of IPython
ip = get_ipython()
failures = []
num_tests = 0
#-----------------------------------------------------------------------------
# Test functions
#-----------------------------------------------------------------------------
class CallableIndexable(object):
def __getitem__(self, idx): return True
def __call__(self, *args, **kws): return True
class Autocallable(autocall.IPyAutocall):
def __call__(self):
return "called"
def run(tests):
"""Loop through a list of (pre, post) inputs, where pre is the string
handed to ipython, and post is how that string looks after it's been
transformed (i.e. ipython's notion of _i)"""
tt.check_pairs(ip.prefilter_manager.prefilter_lines, tests)
def test_handlers():
call_idx = CallableIndexable()
ip.user_ns['call_idx'] = call_idx
# For many of the below, we're also checking that leading whitespace
# turns off the esc char, which it should unless there is a continuation
# line.
run([(i,py3compat.u_format(o)) for i,o in \
[('"no change"', '"no change"'), # normal
(u"lsmagic", "get_ipython().magic({u}'lsmagic ')"), # magic
#("a = b # PYTHON-MODE", '_i'), # emacs -- avoids _in cache
]])
# Objects which are instances of IPyAutocall are *always* autocalled
autocallable = Autocallable()
ip.user_ns['autocallable'] = autocallable
# auto
ip.magic('autocall 0')
# Only explicit escapes or instances of IPyAutocallable should get
# expanded
run([
('len "abc"', 'len "abc"'),
('autocallable', 'autocallable()'),
# Don't add extra brackets (gh-1117)
('autocallable()', 'autocallable()'),
])
ip.magic('autocall 1')
run([
('len "abc"', 'len("abc")'),
('len "abc";', 'len("abc");'), # ; is special -- moves out of parens
# Autocall is turned off if first arg is [] and the object
# is both callable and indexable. Like so:
('len [1,2]', 'len([1,2])'), # len doesn't support __getitem__...
('call_idx [1]', 'call_idx [1]'), # call_idx *does*..
('call_idx 1', 'call_idx(1)'),
('len', 'len'), # only at 2 does it auto-call on single args
])
ip.magic('autocall 2')
run([
('len "abc"', 'len("abc")'),
('len "abc";', 'len("abc");'),
('len [1,2]', 'len([1,2])'),
('call_idx [1]', 'call_idx [1]'),
('call_idx 1', 'call_idx(1)'),
# This is what's different:
('len', 'len()'), # only at 2 does it auto-call on single args
])
ip.magic('autocall 1')
nt.assert_equal(failures, [])
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