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# -*- coding: utf-8 -*-
"""Tests for the key interactiveshell module.
Authors
-------
* Julian Taylor
"""
#-----------------------------------------------------------------------------
# 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 sys
import unittest
from IPython.testing.decorators import skipif
from IPython.utils import py3compat
class InteractiveShellTestCase(unittest.TestCase):
def rl_hist_entries(self, rl, n):
"""Get last n readline history entries as a list"""
return [rl.get_history_item(rl.get_current_history_length() - x)
for x in range(n - 1, -1, -1)]
def test_runs_without_rl(self):
"""Test that function does not throw without readline"""
ip = get_ipython()
ip.has_readline = False
ip.readline = None
ip._replace_rlhist_multiline(u'source', 0)
@skipif(not get_ipython().has_readline, 'no readline')
def test_runs_without_remove_history_item(self):
"""Test that function does not throw on windows without
remove_history_item"""
ip = get_ipython()
if hasattr(ip.readline, 'remove_history_item'):
del ip.readline.remove_history_item
ip._replace_rlhist_multiline(u'source', 0)
@skipif(not get_ipython().has_readline, 'no readline')
@skipif(not hasattr(get_ipython().readline, 'remove_history_item'),
'no remove_history_item')
def test_replace_multiline_hist_disabled(self):
"""Test that multiline replace does nothing if disabled"""
ip = get_ipython()
ip.multiline_history = False
ghist = [u'line1', u'line2']
for h in ghist:
ip.readline.add_history(h)
hlen_b4_cell = ip.readline.get_current_history_length()
hlen_b4_cell = ip._replace_rlhist_multiline(u'sourc€\nsource2',
hlen_b4_cell)
self.assertEquals(ip.readline.get_current_history_length(),
hlen_b4_cell)
hist = self.rl_hist_entries(ip.readline, 2)
self.assertEquals(hist, ghist)
@skipif(not get_ipython().has_readline, 'no readline')
@skipif(not hasattr(get_ipython().readline, 'remove_history_item'),
'no remove_history_item')
def test_replace_multiline_hist_adds(self):
"""Test that multiline replace function adds history"""
ip = get_ipython()
hlen_b4_cell = ip.readline.get_current_history_length()
hlen_b4_cell = ip._replace_rlhist_multiline(u'sourc€', hlen_b4_cell)
self.assertEquals(hlen_b4_cell,
ip.readline.get_current_history_length())
@skipif(not get_ipython().has_readline, 'no readline')
@skipif(not hasattr(get_ipython().readline, 'remove_history_item'),
'no remove_history_item')
def test_replace_multiline_hist_keeps_history(self):
"""Test that multiline replace does not delete history"""
ip = get_ipython()
ip.multiline_history = True
ghist = [u'line1', u'line2']
for h in ghist:
ip.readline.add_history(h)
#start cell
hlen_b4_cell = ip.readline.get_current_history_length()
# nothing added to rl history, should do nothing
hlen_b4_cell = ip._replace_rlhist_multiline(u'sourc€\nsource2',
hlen_b4_cell)
self.assertEquals(ip.readline.get_current_history_length(),
hlen_b4_cell)
hist = self.rl_hist_entries(ip.readline, 2)
self.assertEquals(hist, ghist)
@skipif(not get_ipython().has_readline, 'no readline')
@skipif(not hasattr(get_ipython().readline, 'remove_history_item'),
'no remove_history_item')
def test_replace_multiline_hist_replaces_twice(self):
"""Test that multiline entries are replaced twice"""
ip = get_ipython()
ip.multiline_history = True
ip.readline.add_history(u'line0')
#start cell
hlen_b4_cell = ip.readline.get_current_history_length()
ip.readline.add_history('l€ne1')
ip.readline.add_history('line2')
#replace cell with single line
hlen_b4_cell = ip._replace_rlhist_multiline(u'l€ne1\nline2',
hlen_b4_cell)
ip.readline.add_history('l€ne3')
ip.readline.add_history('line4')
#replace cell with single line
hlen_b4_cell = ip._replace_rlhist_multiline(u'l€ne3\nline4',
hlen_b4_cell)
self.assertEquals(ip.readline.get_current_history_length(),
hlen_b4_cell)
hist = self.rl_hist_entries(ip.readline, 3)
expected = [u'line0', u'l€ne1\nline2', u'l€ne3\nline4']
# perform encoding, in case of casting due to ASCII locale
enc = sys.stdin.encoding or "utf-8"
expected = [ py3compat.unicode_to_str(e, enc) for e in expected ]
self.assertEquals(hist, expected)
@skipif(not get_ipython().has_readline, 'no readline')
@skipif(not hasattr(get_ipython().readline, 'remove_history_item'),
'no remove_history_item')
def test_replace_multiline_hist_replaces_empty_line(self):
"""Test that multiline history skips empty line cells"""
ip = get_ipython()
ip.multiline_history = True
ip.readline.add_history(u'line0')
#start cell
hlen_b4_cell = ip.readline.get_current_history_length()
ip.readline.add_history('l€ne1')
ip.readline.add_history('line2')
hlen_b4_cell = ip._replace_rlhist_multiline(u'l€ne1\nline2',
hlen_b4_cell)
ip.readline.add_history('')
hlen_b4_cell = ip._replace_rlhist_multiline(u'', hlen_b4_cell)
ip.readline.add_history('l€ne3')
hlen_b4_cell = ip._replace_rlhist_multiline(u'l€ne3', hlen_b4_cell)
ip.readline.add_history(' ')
hlen_b4_cell = ip._replace_rlhist_multiline(' ', hlen_b4_cell)
ip.readline.add_history('\t')
ip.readline.add_history('\t ')
hlen_b4_cell = ip._replace_rlhist_multiline('\t', hlen_b4_cell)
ip.readline.add_history('line4')
hlen_b4_cell = ip._replace_rlhist_multiline(u'line4', hlen_b4_cell)
self.assertEquals(ip.readline.get_current_history_length(),
hlen_b4_cell)
hist = self.rl_hist_entries(ip.readline, 4)
# expect no empty cells in history
expected = [u'line0', u'l€ne1\nline2', u'l€ne3', u'line4']
# perform encoding, in case of casting due to ASCII locale
enc = sys.stdin.encoding or "utf-8"
expected = [ py3compat.unicode_to_str(e, enc) for e in expected ]
self.assertEquals(hist, expected)
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