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"""Tests for the key interactiveshell module.
Historically the main classes in interactiveshell have been under-tested. This
module should grow as many single-method tests as possible to trap many of the
recurring bugs we seem to encounter with high-level interaction.
Authors
-------
* Fernando Perez
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
# stdlib
import unittest
from IPython.testing import decorators as dec
#-----------------------------------------------------------------------------
# Tests
#-----------------------------------------------------------------------------
class InteractiveShellTestCase(unittest.TestCase):
def test_naked_string_cells(self):
"""Test that cells with only naked strings are fully executed"""
ip = get_ipython()
# First, single-line inputs
ip.run_cell('"a"\n')
self.assertEquals(ip.user_ns['_'], 'a')
# And also multi-line cells
ip.run_cell('"""a\nb"""\n')
self.assertEquals(ip.user_ns['_'], 'a\nb')
def test_run_empty_cell(self):
"""Just make sure we don't get a horrible error with a blank
cell of input. Yes, I did overlook that."""
ip = get_ipython()
old_xc = ip.execution_count
ip.run_cell('')
self.assertEquals(ip.execution_count, old_xc)
def test_run_cell_multiline(self):
"""Multi-block, multi-line cells must execute correctly.
"""
ip = get_ipython()
src = '\n'.join(["x=1",
"y=2",
"if 1:",
" x += 1",
" y += 1",])
ip.run_cell(src)
self.assertEquals(ip.user_ns['x'], 2)
self.assertEquals(ip.user_ns['y'], 3)
def test_multiline_string_cells(self):
"Code sprinkled with multiline strings should execute (GH-306)"
ip = get_ipython()
ip.run_cell('tmp=0')
self.assertEquals(ip.user_ns['tmp'], 0)
ip.run_cell('tmp=1;"""a\nb"""\n')
self.assertEquals(ip.user_ns['tmp'], 1)
def test_dont_cache_with_semicolon(self):
"Ending a line with semicolon should not cache the returned object (GH-307)"
ip = get_ipython()
oldlen = len(ip.user_ns['Out'])
a = ip.run_cell('1;')
newlen = len(ip.user_ns['Out'])
self.assertEquals(oldlen, newlen)
#also test the default caching behavior
ip.run_cell('1')
newlen = len(ip.user_ns['Out'])
self.assertEquals(oldlen+1, newlen)
def test_In_variable(self):
"Verify that In variable grows with user input (GH-284)"
ip = get_ipython()
oldlen = len(ip.user_ns['In'])
ip.run_cell('1;')
newlen = len(ip.user_ns['In'])
self.assertEquals(oldlen+1, newlen)
self.assertEquals(ip.user_ns['In'][-1],'1;')
def test_magic_names_in_string(self):
ip = get_ipython()
ip.run_cell('a = """\n%exit\n"""')
self.assertEquals(ip.user_ns['a'], '\n%exit\n')
def test_can_pickle(self):
ip = get_ipython()
ip.run_cell(("class Mylist(list):\n"
" def __init__(self,x=[]):\n"
" list.__init__(self,x)"))
ip.run_cell("w=Mylist([1,2,3])")
from cPickle import dumps
res = dumps(ip.user_ns["w"])
self.assertTrue(isinstance(res, bytes))
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