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import tokenize
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import unittest
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import nose.tools as nt
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from IPython.testing import tools as tt
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from IPython.utils import py3compat
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u_fmt = py3compat.u_format
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from IPython.core import inputtransformer as ipt
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def transform_and_reset(transformer):
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transformer = transformer()
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def transform(inp):
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try:
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return transformer.push(inp)
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finally:
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transformer.reset()
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return transform
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# Transformer tests
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def transform_checker(tests, transformer, **kwargs):
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"""Utility to loop over test inputs"""
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transformer = transformer(**kwargs)
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try:
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for inp, tr in tests:
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if inp is None:
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out = transformer.reset()
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else:
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out = transformer.push(inp)
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nt.assert_equal(out, tr)
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finally:
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transformer.reset()
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# Data for all the syntax tests in the form of lists of pairs of
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# raw/transformed input. We store it here as a global dict so that we can use
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# it both within single-function tests and also to validate the behavior of the
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# larger objects
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syntax = \
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dict(assign_system =
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[(i,py3compat.u_format(o)) for i,o in \
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[(u'a =! ls', "a = get_ipython().getoutput({u}'ls')"),
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(u'b = !ls', "b = get_ipython().getoutput({u}'ls')"),
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('x=1', 'x=1'), # normal input is unmodified
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(' ',' '), # blank lines are kept intact
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]],
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assign_magic =
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[(i,py3compat.u_format(o)) for i,o in \
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[(u'a =% who', "a = get_ipython().magic({u}'who')"),
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(u'b = %who', "b = get_ipython().magic({u}'who')"),
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('x=1', 'x=1'), # normal input is unmodified
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(' ',' '), # blank lines are kept intact
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]],
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classic_prompt =
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[('>>> x=1', 'x=1'),
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('x=1', 'x=1'), # normal input is unmodified
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(' ', ' '), # blank lines are kept intact
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],
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ipy_prompt =
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[('In [1]: x=1', 'x=1'),
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('x=1', 'x=1'), # normal input is unmodified
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(' ',' '), # blank lines are kept intact
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],
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# Tests for the escape transformer to leave normal code alone
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escaped_noesc =
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[ (' ', ' '),
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('x=1', 'x=1'),
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],
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# System calls
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escaped_shell =
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[(i,py3compat.u_format(o)) for i,o in \
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[ (u'!ls', "get_ipython().system({u}'ls')"),
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# Double-escape shell, this means to capture the output of the
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# subprocess and return it
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(u'!!ls', "get_ipython().getoutput({u}'ls')"),
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]],
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# Help/object info
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escaped_help =
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[(i,py3compat.u_format(o)) for i,o in \
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[ (u'?', 'get_ipython().show_usage()'),
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(u'?x1', "get_ipython().magic({u}'pinfo x1')"),
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(u'??x2', "get_ipython().magic({u}'pinfo2 x2')"),
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(u'?a.*s', "get_ipython().magic({u}'psearch a.*s')"),
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(u'?%hist1', "get_ipython().magic({u}'pinfo %hist1')"),
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(u'?%%hist2', "get_ipython().magic({u}'pinfo %%hist2')"),
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(u'?abc = qwe', "get_ipython().magic({u}'pinfo abc')"),
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]],
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end_help =
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[(i,py3compat.u_format(o)) for i,o in \
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[ (u'x3?', "get_ipython().magic({u}'pinfo x3')"),
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(u'x4??', "get_ipython().magic({u}'pinfo2 x4')"),
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(u'%hist1?', "get_ipython().magic({u}'pinfo %hist1')"),
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(u'%hist2??', "get_ipython().magic({u}'pinfo2 %hist2')"),
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(u'%%hist3?', "get_ipython().magic({u}'pinfo %%hist3')"),
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(u'%%hist4??', "get_ipython().magic({u}'pinfo2 %%hist4')"),
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(u'f*?', "get_ipython().magic({u}'psearch f*')"),
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(u'ax.*aspe*?', "get_ipython().magic({u}'psearch ax.*aspe*')"),
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(u'a = abc?', "get_ipython().set_next_input({u}'a = abc');"
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"get_ipython().magic({u}'pinfo abc')"),
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(u'a = abc.qe??', "get_ipython().set_next_input({u}'a = abc.qe');"
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"get_ipython().magic({u}'pinfo2 abc.qe')"),
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(u'a = *.items?', "get_ipython().set_next_input({u}'a = *.items');"
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"get_ipython().magic({u}'psearch *.items')"),
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(u'plot(a?', "get_ipython().set_next_input({u}'plot(a');"
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"get_ipython().magic({u}'pinfo a')"),
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(u'a*2 #comment?', 'a*2 #comment?'),
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]],
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# Explicit magic calls
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escaped_magic =
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[(i,py3compat.u_format(o)) for i,o in \
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[ (u'%cd', "get_ipython().magic({u}'cd')"),
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(u'%cd /home', "get_ipython().magic({u}'cd /home')"),
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# Backslashes need to be escaped.
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(u'%cd C:\\User', "get_ipython().magic({u}'cd C:\\\\User')"),
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(u' %magic', " get_ipython().magic({u}'magic')"),
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]],
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# Quoting with separate arguments
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escaped_quote =
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[ (',f', 'f("")'),
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(',f x', 'f("x")'),
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(' ,f y', ' f("y")'),
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(',f a b', 'f("a", "b")'),
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],
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# Quoting with single argument
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escaped_quote2 =
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[ (';f', 'f("")'),
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(';f x', 'f("x")'),
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(' ;f y', ' f("y")'),
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(';f a b', 'f("a b")'),
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],
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# Simply apply parens
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escaped_paren =
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[ ('/f', 'f()'),
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('/f x', 'f(x)'),
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(' /f y', ' f(y)'),
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('/f a b', 'f(a, b)'),
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],
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# Check that we transform prompts before other transforms
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mixed =
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[(i,py3compat.u_format(o)) for i,o in \
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[ (u'In [1]: %lsmagic', "get_ipython().magic({u}'lsmagic')"),
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(u'>>> %lsmagic', "get_ipython().magic({u}'lsmagic')"),
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(u'In [2]: !ls', "get_ipython().system({u}'ls')"),
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(u'In [3]: abs?', "get_ipython().magic({u}'pinfo abs')"),
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(u'In [4]: b = %who', "b = get_ipython().magic({u}'who')"),
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]],
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)
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# multiline syntax examples. Each of these should be a list of lists, with
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# each entry itself having pairs of raw/transformed input. The union (with
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# '\n'.join() of the transformed inputs is what the splitter should produce
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# when fed the raw lines one at a time via push.
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syntax_ml = \
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dict(classic_prompt =
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[ [('>>> for i in range(10):','for i in range(10):'),
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('... print i',' print i'),
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('... ', ''),
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],
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[('>>> a="""','a="""'),
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('... 123"""','123"""'),
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],
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[('a="""','a="""'),
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('... 123"""','... 123"""'),
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],
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],
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ipy_prompt =
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[ [('In [24]: for i in range(10):','for i in range(10):'),
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(' ....: print i',' print i'),
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(' ....: ', ''),
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],
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[('In [2]: a="""','a="""'),
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(' ...: 123"""','123"""'),
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],
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[('a="""','a="""'),
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(' ...: 123"""',' ...: 123"""'),
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],
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],
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multiline_datastructure_prompt =
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[ [('>>> a = [1,','a = [1,'),
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('... 2]','2]'),
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],
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],
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multiline_datastructure =
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[ [('b = ("%s"', None),
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('# comment', None),
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('%foo )', 'b = ("%s"\n# comment\n%foo )'),
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],
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],
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leading_indent =
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[ [(' print "hi"','print "hi"'),
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],
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[(' for a in range(5):','for a in range(5):'),
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(' a*2',' a*2'),
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],
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[(' a="""','a="""'),
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(' 123"""','123"""'),
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],
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[('a="""','a="""'),
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(' 123"""',' 123"""'),
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],
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],
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cellmagic =
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[ [(u'%%foo a', None),
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(None, u_fmt("get_ipython().run_cell_magic({u}'foo', {u}'a', {u}'')")),
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],
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[(u'%%bar 123', None),
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(u'hello', None),
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(None , u_fmt("get_ipython().run_cell_magic({u}'bar', {u}'123', {u}'hello')")),
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],
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],
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escaped =
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[ [('%abc def \\', None),
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('ghi', u_fmt("get_ipython().magic({u}'abc def ghi')")),
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],
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[('%abc def \\', None),
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('ghi\\', None),
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(None, u_fmt("get_ipython().magic({u}'abc def ghi')")),
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],
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],
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assign_magic =
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[ [(u'a = %bc de \\', None),
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(u'fg', u_fmt("a = get_ipython().magic({u}'bc de fg')")),
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],
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[(u'a = %bc de \\', None),
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(u'fg\\', None),
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(None, u_fmt("a = get_ipython().magic({u}'bc de fg')")),
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],
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],
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assign_system =
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[ [(u'a = !bc de \\', None),
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(u'fg', u_fmt("a = get_ipython().getoutput({u}'bc de fg')")),
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],
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[(u'a = !bc de \\', None),
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(u'fg\\', None),
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(None, u_fmt("a = get_ipython().getoutput({u}'bc de fg')")),
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],
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],
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)
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def test_assign_system():
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tt.check_pairs(transform_and_reset(ipt.assign_from_system), syntax['assign_system'])
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def test_assign_magic():
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tt.check_pairs(transform_and_reset(ipt.assign_from_magic), syntax['assign_magic'])
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def test_classic_prompt():
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tt.check_pairs(transform_and_reset(ipt.classic_prompt), syntax['classic_prompt'])
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for example in syntax_ml['classic_prompt']:
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transform_checker(example, ipt.classic_prompt)
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for example in syntax_ml['multiline_datastructure_prompt']:
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transform_checker(example, ipt.classic_prompt)
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def test_ipy_prompt():
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tt.check_pairs(transform_and_reset(ipt.ipy_prompt), syntax['ipy_prompt'])
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for example in syntax_ml['ipy_prompt']:
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transform_checker(example, ipt.ipy_prompt)
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def test_assemble_logical_lines():
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tests = \
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[ [(u"a = \\", None),
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(u"123", u"a = 123"),
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],
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[(u"a = \\", None), # Test resetting when within a multi-line string
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(u"12 *\\", None),
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(None, u"a = 12 *"),
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],
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[(u"# foo\\", u"# foo\\"), # Comments can't be continued like this
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],
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]
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for example in tests:
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transform_checker(example, ipt.assemble_logical_lines)
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def test_assemble_python_lines():
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tests = \
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[ [(u"a = '''", None),
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(u"abc'''", u"a = '''\nabc'''"),
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],
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[(u"a = '''", None), # Test resetting when within a multi-line string
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(u"def", None),
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(None, u"a = '''\ndef"),
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],
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[(u"a = [1,", None),
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(u"2]", u"a = [1,\n2]"),
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],
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[(u"a = [1,", None), # Test resetting when within a multi-line string
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(u"2,", None),
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(None, u"a = [1,\n2,"),
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],
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] + syntax_ml['multiline_datastructure']
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for example in tests:
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transform_checker(example, ipt.assemble_python_lines)
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def test_help_end():
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tt.check_pairs(transform_and_reset(ipt.help_end), syntax['end_help'])
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def test_escaped_noesc():
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tt.check_pairs(transform_and_reset(ipt.escaped_commands), syntax['escaped_noesc'])
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def test_escaped_shell():
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tt.check_pairs(transform_and_reset(ipt.escaped_commands), syntax['escaped_shell'])
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def test_escaped_help():
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tt.check_pairs(transform_and_reset(ipt.escaped_commands), syntax['escaped_help'])
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def test_escaped_magic():
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tt.check_pairs(transform_and_reset(ipt.escaped_commands), syntax['escaped_magic'])
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def test_escaped_quote():
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tt.check_pairs(transform_and_reset(ipt.escaped_commands), syntax['escaped_quote'])
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def test_escaped_quote2():
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tt.check_pairs(transform_and_reset(ipt.escaped_commands), syntax['escaped_quote2'])
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def test_escaped_paren():
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tt.check_pairs(transform_and_reset(ipt.escaped_commands), syntax['escaped_paren'])
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def test_cellmagic():
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for example in syntax_ml['cellmagic']:
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transform_checker(example, ipt.cellmagic)
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line_example = [(u'%%bar 123', None),
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(u'hello', None),
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(u'' , u_fmt("get_ipython().run_cell_magic({u}'bar', {u}'123', {u}'hello')")),
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]
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transform_checker(line_example, ipt.cellmagic, end_on_blank_line=True)
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def test_has_comment():
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tests = [('text', False),
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('text #comment', True),
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('text #comment\n', True),
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('#comment', True),
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('#comment\n', True),
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('a = "#string"', False),
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('a = "#string" # comment', True),
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('a #comment not "string"', True),
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]
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tt.check_pairs(ipt.has_comment, tests)
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@ipt.TokenInputTransformer.wrap
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def decistmt(tokens):
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"""Substitute Decimals for floats in a string of statements.
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Based on an example from the tokenize module docs.
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"""
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result = []
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for toknum, tokval, _, _, _ in tokens:
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if toknum == tokenize.NUMBER and '.' in tokval: # replace NUMBER tokens
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for newtok in [
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(tokenize.NAME, 'Decimal'),
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(tokenize.OP, '('),
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(tokenize.STRING, repr(tokval)),
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(tokenize.OP, ')')
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]:
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yield newtok
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else:
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yield (toknum, tokval)
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def test_token_input_transformer():
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tests = [(u'1.2', u_fmt(u"Decimal ({u}'1.2')")),
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(u'"1.2"', u'"1.2"'),
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]
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tt.check_pairs(transform_and_reset(decistmt), tests)
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ml_tests = \
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[ [(u"a = 1.2; b = '''x", None),
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(u"y'''", u_fmt(u"a =Decimal ({u}'1.2');b ='''x\ny'''")),
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],
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[(u"a = [1.2,", None),
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(u"3]", u_fmt(u"a =[Decimal ({u}'1.2'),\n3 ]")),
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],
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[(u"a = '''foo", None), # Test resetting when within a multi-line string
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(u"bar", None),
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(None, u"a = '''foo\nbar"),
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],
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]
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for example in ml_tests:
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transform_checker(example, decistmt)
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