##// END OF EJS Templates
skip permission -> 403 test on Windows...
skip permission -> 403 test on Windows The test actually passes on my VM (Win 7), but not on Jenkins (Server 2012). I haven't figured out how to identify the subset of Windows systems where it won't work, but since the problem appears to be in the test, not the tested code, skipping on Windows seems the right way to go.

File last commit:

r18850:500edeb7
r20575:7211fc10
Show More
test_inputsplitter.py
605 lines | 21.4 KiB | text/x-python | PythonLexer
/ IPython / core / tests / test_inputsplitter.py
# -*- coding: utf-8 -*-
"""Tests for the inputsplitter module."""
from __future__ import print_function
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import unittest
import sys
import nose.tools as nt
from IPython.core import inputsplitter as isp
from IPython.core.inputtransformer import InputTransformer
from IPython.core.tests.test_inputtransformer import syntax, syntax_ml
from IPython.testing import tools as tt
from IPython.utils import py3compat
from IPython.utils.py3compat import string_types, input
#-----------------------------------------------------------------------------
# Semi-complete examples (also used as tests)
#-----------------------------------------------------------------------------
# Note: at the bottom, there's a slightly more complete version of this that
# can be useful during development of code here.
def mini_interactive_loop(input_func):
"""Minimal example of the logic of an interactive interpreter loop.
This serves as an example, and it is used by the test system with a fake
raw_input that simulates interactive input."""
from IPython.core.inputsplitter import InputSplitter
isp = InputSplitter()
# In practice, this input loop would be wrapped in an outside loop to read
# input indefinitely, until some exit/quit command was issued. Here we
# only illustrate the basic inner loop.
while isp.push_accepts_more():
indent = ' '*isp.indent_spaces
prompt = '>>> ' + indent
line = indent + input_func(prompt)
isp.push(line)
# Here we just return input so we can use it in a test suite, but a real
# interpreter would instead send it for execution somewhere.
src = isp.source_reset()
#print 'Input source was:\n', src # dbg
return src
#-----------------------------------------------------------------------------
# Test utilities, just for local use
#-----------------------------------------------------------------------------
def assemble(block):
"""Assemble a block into multi-line sub-blocks."""
return ['\n'.join(sub_block)+'\n' for sub_block in block]
def pseudo_input(lines):
"""Return a function that acts like raw_input but feeds the input list."""
ilines = iter(lines)
def raw_in(prompt):
try:
return next(ilines)
except StopIteration:
return ''
return raw_in
#-----------------------------------------------------------------------------
# Tests
#-----------------------------------------------------------------------------
def test_spaces():
tests = [('', 0),
(' ', 1),
('\n', 0),
(' \n', 1),
('x', 0),
(' x', 1),
(' x',2),
(' x',4),
# Note: tabs are counted as a single whitespace!
('\tx', 1),
('\t x', 2),
]
tt.check_pairs(isp.num_ini_spaces, tests)
def test_remove_comments():
tests = [('text', 'text'),
('text # comment', 'text '),
('text # comment\n', 'text \n'),
('text # comment \n', 'text \n'),
('line # c \nline\n','line \nline\n'),
('line # c \nline#c2 \nline\nline #c\n\n',
'line \nline\nline\nline \n\n'),
]
tt.check_pairs(isp.remove_comments, tests)
def test_get_input_encoding():
encoding = isp.get_input_encoding()
nt.assert_true(isinstance(encoding, string_types))
# simple-minded check that at least encoding a simple string works with the
# encoding we got.
nt.assert_equal(u'test'.encode(encoding), b'test')
class NoInputEncodingTestCase(unittest.TestCase):
def setUp(self):
self.old_stdin = sys.stdin
class X: pass
fake_stdin = X()
sys.stdin = fake_stdin
def test(self):
# Verify that if sys.stdin has no 'encoding' attribute we do the right
# thing
enc = isp.get_input_encoding()
self.assertEqual(enc, 'ascii')
def tearDown(self):
sys.stdin = self.old_stdin
class InputSplitterTestCase(unittest.TestCase):
def setUp(self):
self.isp = isp.InputSplitter()
def test_reset(self):
isp = self.isp
isp.push('x=1')
isp.reset()
self.assertEqual(isp._buffer, [])
self.assertEqual(isp.indent_spaces, 0)
self.assertEqual(isp.source, '')
self.assertEqual(isp.code, None)
self.assertEqual(isp._is_complete, False)
def test_source(self):
self.isp._store('1')
self.isp._store('2')
self.assertEqual(self.isp.source, '1\n2\n')
self.assertTrue(len(self.isp._buffer)>0)
self.assertEqual(self.isp.source_reset(), '1\n2\n')
self.assertEqual(self.isp._buffer, [])
self.assertEqual(self.isp.source, '')
def test_indent(self):
isp = self.isp # shorthand
isp.push('x=1')
self.assertEqual(isp.indent_spaces, 0)
isp.push('if 1:\n x=1')
self.assertEqual(isp.indent_spaces, 4)
isp.push('y=2\n')
self.assertEqual(isp.indent_spaces, 0)
def test_indent2(self):
isp = self.isp
isp.push('if 1:')
self.assertEqual(isp.indent_spaces, 4)
isp.push(' x=1')
self.assertEqual(isp.indent_spaces, 4)
# Blank lines shouldn't change the indent level
isp.push(' '*2)
self.assertEqual(isp.indent_spaces, 4)
def test_indent3(self):
isp = self.isp
# When a multiline statement contains parens or multiline strings, we
# shouldn't get confused.
isp.push("if 1:")
isp.push(" x = (1+\n 2)")
self.assertEqual(isp.indent_spaces, 4)
def test_indent4(self):
isp = self.isp
# whitespace after ':' should not screw up indent level
isp.push('if 1: \n x=1')
self.assertEqual(isp.indent_spaces, 4)
isp.push('y=2\n')
self.assertEqual(isp.indent_spaces, 0)
isp.push('if 1:\t\n x=1')
self.assertEqual(isp.indent_spaces, 4)
isp.push('y=2\n')
self.assertEqual(isp.indent_spaces, 0)
def test_dedent_pass(self):
isp = self.isp # shorthand
# should NOT cause dedent
isp.push('if 1:\n passes = 5')
self.assertEqual(isp.indent_spaces, 4)
isp.push('if 1:\n pass')
self.assertEqual(isp.indent_spaces, 0)
isp.push('if 1:\n pass ')
self.assertEqual(isp.indent_spaces, 0)
def test_dedent_break(self):
isp = self.isp # shorthand
# should NOT cause dedent
isp.push('while 1:\n breaks = 5')
self.assertEqual(isp.indent_spaces, 4)
isp.push('while 1:\n break')
self.assertEqual(isp.indent_spaces, 0)
isp.push('while 1:\n break ')
self.assertEqual(isp.indent_spaces, 0)
def test_dedent_continue(self):
isp = self.isp # shorthand
# should NOT cause dedent
isp.push('while 1:\n continues = 5')
self.assertEqual(isp.indent_spaces, 4)
isp.push('while 1:\n continue')
self.assertEqual(isp.indent_spaces, 0)
isp.push('while 1:\n continue ')
self.assertEqual(isp.indent_spaces, 0)
def test_dedent_raise(self):
isp = self.isp # shorthand
# should NOT cause dedent
isp.push('if 1:\n raised = 4')
self.assertEqual(isp.indent_spaces, 4)
isp.push('if 1:\n raise TypeError()')
self.assertEqual(isp.indent_spaces, 0)
isp.push('if 1:\n raise')
self.assertEqual(isp.indent_spaces, 0)
isp.push('if 1:\n raise ')
self.assertEqual(isp.indent_spaces, 0)
def test_dedent_return(self):
isp = self.isp # shorthand
# should NOT cause dedent
isp.push('if 1:\n returning = 4')
self.assertEqual(isp.indent_spaces, 4)
isp.push('if 1:\n return 5 + 493')
self.assertEqual(isp.indent_spaces, 0)
isp.push('if 1:\n return')
self.assertEqual(isp.indent_spaces, 0)
isp.push('if 1:\n return ')
self.assertEqual(isp.indent_spaces, 0)
isp.push('if 1:\n return(0)')
self.assertEqual(isp.indent_spaces, 0)
def test_push(self):
isp = self.isp
self.assertTrue(isp.push('x=1'))
def test_push2(self):
isp = self.isp
self.assertFalse(isp.push('if 1:'))
for line in [' x=1', '# a comment', ' y=2']:
print(line)
self.assertTrue(isp.push(line))
def test_push3(self):
isp = self.isp
isp.push('if True:')
isp.push(' a = 1')
self.assertFalse(isp.push('b = [1,'))
def test_push_accepts_more(self):
isp = self.isp
isp.push('x=1')
self.assertFalse(isp.push_accepts_more())
def test_push_accepts_more2(self):
isp = self.isp
isp.push('if 1:')
self.assertTrue(isp.push_accepts_more())
isp.push(' x=1')
self.assertTrue(isp.push_accepts_more())
isp.push('')
self.assertFalse(isp.push_accepts_more())
def test_push_accepts_more3(self):
isp = self.isp
isp.push("x = (2+\n3)")
self.assertFalse(isp.push_accepts_more())
def test_push_accepts_more4(self):
isp = self.isp
# When a multiline statement contains parens or multiline strings, we
# shouldn't get confused.
# FIXME: we should be able to better handle de-dents in statements like
# multiline strings and multiline expressions (continued with \ or
# parens). Right now we aren't handling the indentation tracking quite
# correctly with this, though in practice it may not be too much of a
# problem. We'll need to see.
isp.push("if 1:")
isp.push(" x = (2+")
isp.push(" 3)")
self.assertTrue(isp.push_accepts_more())
isp.push(" y = 3")
self.assertTrue(isp.push_accepts_more())
isp.push('')
self.assertFalse(isp.push_accepts_more())
def test_push_accepts_more5(self):
isp = self.isp
isp.push('try:')
isp.push(' a = 5')
isp.push('except:')
isp.push(' raise')
# We want to be able to add an else: block at this point, so it should
# wait for a blank line.
self.assertTrue(isp.push_accepts_more())
def test_continuation(self):
isp = self.isp
isp.push("import os, \\")
self.assertTrue(isp.push_accepts_more())
isp.push("sys")
self.assertFalse(isp.push_accepts_more())
def test_syntax_error(self):
isp = self.isp
# Syntax errors immediately produce a 'ready' block, so the invalid
# Python can be sent to the kernel for evaluation with possible ipython
# special-syntax conversion.
isp.push('run foo')
self.assertFalse(isp.push_accepts_more())
def test_unicode(self):
self.isp.push(u"Pérez")
self.isp.push(u'\xc3\xa9')
self.isp.push(u"u'\xc3\xa9'")
def test_line_continuation(self):
""" Test issue #2108."""
isp = self.isp
# A blank line after a line continuation should not accept more
isp.push("1 \\\n\n")
self.assertFalse(isp.push_accepts_more())
# Whitespace after a \ is a SyntaxError. The only way to test that
# here is to test that push doesn't accept more (as with
# test_syntax_error() above).
isp.push(r"1 \ ")
self.assertFalse(isp.push_accepts_more())
# Even if the line is continuable (c.f. the regular Python
# interpreter)
isp.push(r"(1 \ ")
self.assertFalse(isp.push_accepts_more())
def test_check_complete(self):
isp = self.isp
self.assertEqual(isp.check_complete("a = 1"), ('complete', None))
self.assertEqual(isp.check_complete("for a in range(5):"), ('incomplete', 4))
self.assertEqual(isp.check_complete("raise = 2"), ('invalid', None))
self.assertEqual(isp.check_complete("a = [1,\n2,"), ('incomplete', 0))
self.assertEqual(isp.check_complete("def a():\n x=1\n global x"), ('invalid', None))
class InteractiveLoopTestCase(unittest.TestCase):
"""Tests for an interactive loop like a python shell.
"""
def check_ns(self, lines, ns):
"""Validate that the given input lines produce the resulting namespace.
Note: the input lines are given exactly as they would be typed in an
auto-indenting environment, as mini_interactive_loop above already does
auto-indenting and prepends spaces to the input.
"""
src = mini_interactive_loop(pseudo_input(lines))
test_ns = {}
exec(src, test_ns)
# We can't check that the provided ns is identical to the test_ns,
# because Python fills test_ns with extra keys (copyright, etc). But
# we can check that the given dict is *contained* in test_ns
for k,v in ns.items():
self.assertEqual(test_ns[k], v)
def test_simple(self):
self.check_ns(['x=1'], dict(x=1))
def test_simple2(self):
self.check_ns(['if 1:', 'x=2'], dict(x=2))
def test_xy(self):
self.check_ns(['x=1; y=2'], dict(x=1, y=2))
def test_abc(self):
self.check_ns(['if 1:','a=1','b=2','c=3'], dict(a=1, b=2, c=3))
def test_multi(self):
self.check_ns(['x =(1+','1+','2)'], dict(x=4))
class IPythonInputTestCase(InputSplitterTestCase):
"""By just creating a new class whose .isp is a different instance, we
re-run the same test battery on the new input splitter.
In addition, this runs the tests over the syntax and syntax_ml dicts that
were tested by individual functions, as part of the OO interface.
It also makes some checks on the raw buffer storage.
"""
def setUp(self):
self.isp = isp.IPythonInputSplitter()
def test_syntax(self):
"""Call all single-line syntax tests from the main object"""
isp = self.isp
for example in syntax.values():
for raw, out_t in example:
if raw.startswith(' '):
continue
isp.push(raw+'\n')
out_raw = isp.source_raw
out = isp.source_reset()
self.assertEqual(out.rstrip(), out_t,
tt.pair_fail_msg.format("inputsplitter",raw, out_t, out))
self.assertEqual(out_raw.rstrip(), raw.rstrip())
def test_syntax_multiline(self):
isp = self.isp
for example in syntax_ml.values():
for line_pairs in example:
out_t_parts = []
raw_parts = []
for lraw, out_t_part in line_pairs:
if out_t_part is not None:
out_t_parts.append(out_t_part)
if lraw is not None:
isp.push(lraw)
raw_parts.append(lraw)
out_raw = isp.source_raw
out = isp.source_reset()
out_t = '\n'.join(out_t_parts).rstrip()
raw = '\n'.join(raw_parts).rstrip()
self.assertEqual(out.rstrip(), out_t)
self.assertEqual(out_raw.rstrip(), raw)
def test_syntax_multiline_cell(self):
isp = self.isp
for example in syntax_ml.values():
out_t_parts = []
for line_pairs in example:
raw = '\n'.join(r for r, _ in line_pairs if r is not None)
out_t = '\n'.join(t for _,t in line_pairs if t is not None)
out = isp.transform_cell(raw)
# Match ignoring trailing whitespace
self.assertEqual(out.rstrip(), out_t.rstrip())
def test_cellmagic_preempt(self):
isp = self.isp
for raw, name, line, cell in [
("%%cellm a\nIn[1]:", u'cellm', u'a', u'In[1]:'),
("%%cellm \nline\n>>> hi", u'cellm', u'', u'line\n>>> hi'),
(">>> %%cellm \nline\n>>> hi", u'cellm', u'', u'line\nhi'),
("%%cellm \n>>> hi", u'cellm', u'', u'hi'),
("%%cellm \nline1\nline2", u'cellm', u'', u'line1\nline2'),
("%%cellm \nline1\\\\\nline2", u'cellm', u'', u'line1\\\\\nline2'),
]:
expected = "get_ipython().run_cell_magic(%r, %r, %r)" % (
name, line, cell
)
out = isp.transform_cell(raw)
self.assertEqual(out.rstrip(), expected.rstrip())
def test_multiline_passthrough(self):
isp = self.isp
class CommentTransformer(InputTransformer):
def __init__(self):
self._lines = []
def push(self, line):
self._lines.append(line + '#')
def reset(self):
text = '\n'.join(self._lines)
self._lines = []
return text
isp.physical_line_transforms.insert(0, CommentTransformer())
for raw, expected in [
("a=5", "a=5#"),
("%ls foo", "get_ipython().magic(%r)" % u'ls foo#'),
("!ls foo\n%ls bar", "get_ipython().system(%r)\nget_ipython().magic(%r)" % (
u'ls foo#', u'ls bar#'
)),
("1\n2\n3\n%ls foo\n4\n5", "1#\n2#\n3#\nget_ipython().magic(%r)\n4#\n5#" % u'ls foo#'),
]:
out = isp.transform_cell(raw)
self.assertEqual(out.rstrip(), expected.rstrip())
#-----------------------------------------------------------------------------
# Main - use as a script, mostly for developer experiments
#-----------------------------------------------------------------------------
if __name__ == '__main__':
# A simple demo for interactive experimentation. This code will not get
# picked up by any test suite.
from IPython.core.inputsplitter import InputSplitter, IPythonInputSplitter
# configure here the syntax to use, prompt and whether to autoindent
#isp, start_prompt = InputSplitter(), '>>> '
isp, start_prompt = IPythonInputSplitter(), 'In> '
autoindent = True
#autoindent = False
try:
while True:
prompt = start_prompt
while isp.push_accepts_more():
indent = ' '*isp.indent_spaces
if autoindent:
line = indent + input(prompt+indent)
else:
line = input(prompt)
isp.push(line)
prompt = '... '
# Here we just return input so we can use it in a test suite, but a
# real interpreter would instead send it for execution somewhere.
#src = isp.source; raise EOFError # dbg
raw = isp.source_raw
src = isp.source_reset()
print('Input source was:\n', src)
print('Raw source was:\n', raw)
except EOFError:
print('Bye')
# Tests for cell magics support
def test_last_blank():
nt.assert_false(isp.last_blank(''))
nt.assert_false(isp.last_blank('abc'))
nt.assert_false(isp.last_blank('abc\n'))
nt.assert_false(isp.last_blank('abc\na'))
nt.assert_true(isp.last_blank('\n'))
nt.assert_true(isp.last_blank('\n '))
nt.assert_true(isp.last_blank('abc\n '))
nt.assert_true(isp.last_blank('abc\n\n'))
nt.assert_true(isp.last_blank('abc\nd\n\n'))
nt.assert_true(isp.last_blank('abc\nd\ne\n\n'))
nt.assert_true(isp.last_blank('abc \n \n \n\n'))
def test_last_two_blanks():
nt.assert_false(isp.last_two_blanks(''))
nt.assert_false(isp.last_two_blanks('abc'))
nt.assert_false(isp.last_two_blanks('abc\n'))
nt.assert_false(isp.last_two_blanks('abc\n\na'))
nt.assert_false(isp.last_two_blanks('abc\n \n'))
nt.assert_false(isp.last_two_blanks('abc\n\n'))
nt.assert_true(isp.last_two_blanks('\n\n'))
nt.assert_true(isp.last_two_blanks('\n\n '))
nt.assert_true(isp.last_two_blanks('\n \n'))
nt.assert_true(isp.last_two_blanks('abc\n\n '))
nt.assert_true(isp.last_two_blanks('abc\n\n\n'))
nt.assert_true(isp.last_two_blanks('abc\n\n \n'))
nt.assert_true(isp.last_two_blanks('abc\n\n \n '))
nt.assert_true(isp.last_two_blanks('abc\n\n \n \n'))
nt.assert_true(isp.last_two_blanks('abc\nd\n\n\n'))
nt.assert_true(isp.last_two_blanks('abc\nd\ne\nf\n\n\n'))
class CellMagicsCommon(object):
def test_whole_cell(self):
src = "%%cellm line\nbody\n"
out = self.sp.transform_cell(src)
ref = u"get_ipython().run_cell_magic({u}'cellm', {u}'line', {u}'body')\n"
nt.assert_equal(out, py3compat.u_format(ref))
def test_cellmagic_help(self):
self.sp.push('%%cellm?')
nt.assert_false(self.sp.push_accepts_more())
def tearDown(self):
self.sp.reset()
class CellModeCellMagics(CellMagicsCommon, unittest.TestCase):
sp = isp.IPythonInputSplitter(line_input_checker=False)
def test_incremental(self):
sp = self.sp
sp.push('%%cellm firstline\n')
nt.assert_true(sp.push_accepts_more()) #1
sp.push('line2\n')
nt.assert_true(sp.push_accepts_more()) #2
sp.push('\n')
# This should accept a blank line and carry on until the cell is reset
nt.assert_true(sp.push_accepts_more()) #3
class LineModeCellMagics(CellMagicsCommon, unittest.TestCase):
sp = isp.IPythonInputSplitter(line_input_checker=True)
def test_incremental(self):
sp = self.sp
sp.push('%%cellm line2\n')
nt.assert_true(sp.push_accepts_more()) #1
sp.push('\n')
# In this case, a blank line should end the cell magic
nt.assert_false(sp.push_accepts_more()) #2