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# encoding: utf-8
"""Tests for IPython.utils.text"""
from __future__ import print_function
#-----------------------------------------------------------------------------
# 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
#-----------------------------------------------------------------------------
import os
import math
import random
import sys
import nose.tools as nt
try:
from pathlib import Path
except ImportError:
# Python 2 backport
from pathlib2 import Path
from IPython.utils import text
#-----------------------------------------------------------------------------
# Globals
#-----------------------------------------------------------------------------
def test_columnize():
"""Basic columnize tests."""
size = 5
items = [l*size for l in 'abcd']
out = text.columnize(items, displaywidth=80)
nt.assert_equal(out, 'aaaaa bbbbb ccccc ddddd\n')
out = text.columnize(items, displaywidth=25)
nt.assert_equal(out, 'aaaaa ccccc\nbbbbb ddddd\n')
out = text.columnize(items, displaywidth=12)
nt.assert_equal(out, 'aaaaa ccccc\nbbbbb ddddd\n')
out = text.columnize(items, displaywidth=10)
nt.assert_equal(out, 'aaaaa\nbbbbb\nccccc\nddddd\n')
out = text.columnize(items, row_first=True, displaywidth=80)
nt.assert_equal(out, 'aaaaa bbbbb ccccc ddddd\n')
out = text.columnize(items, row_first=True, displaywidth=25)
nt.assert_equal(out, 'aaaaa bbbbb\nccccc ddddd\n')
out = text.columnize(items, row_first=True, displaywidth=12)
nt.assert_equal(out, 'aaaaa bbbbb\nccccc ddddd\n')
out = text.columnize(items, row_first=True, displaywidth=10)
nt.assert_equal(out, 'aaaaa\nbbbbb\nccccc\nddddd\n')
out = text.columnize(items, displaywidth=40, spread=True)
nt.assert_equal(out, 'aaaaa bbbbb ccccc ddddd\n')
out = text.columnize(items, displaywidth=20, spread=True)
nt.assert_equal(out, 'aaaaa ccccc\nbbbbb ddddd\n')
out = text.columnize(items, displaywidth=12, spread=True)
nt.assert_equal(out, 'aaaaa ccccc\nbbbbb ddddd\n')
out = text.columnize(items, displaywidth=10, spread=True)
nt.assert_equal(out, 'aaaaa\nbbbbb\nccccc\nddddd\n')
def test_columnize_random():
"""Test with random input to hopfully catch edge case """
for row_first in [True, False]:
for nitems in [random.randint(2,70) for i in range(2,20)]:
displaywidth = random.randint(20,200)
rand_len = [random.randint(2,displaywidth) for i in range(nitems)]
items = ['x'*l for l in rand_len]
out = text.columnize(items, row_first=row_first, displaywidth=displaywidth)
longer_line = max([len(x) for x in out.split('\n')])
longer_element = max(rand_len)
if longer_line > displaywidth:
print("Columnize displayed something lager than displaywidth : %s " % longer_line)
print("longer element : %s " % longer_element)
print("displaywidth : %s " % displaywidth)
print("number of element : %s " % nitems)
print("size of each element :\n %s" % rand_len)
assert False, "row_first={0}".format(row_first)
def test_columnize_medium():
"""Test with inputs than shouldn't be wider than 80"""
size = 40
items = [l*size for l in 'abc']
for row_first in [True, False]:
out = text.columnize(items, row_first=row_first, displaywidth=80)
nt.assert_equal(out, '\n'.join(items+['']), "row_first={0}".format(row_first))
def test_columnize_long():
"""Test columnize with inputs longer than the display window"""
size = 11
items = [l*size for l in 'abc']
for row_first in [True, False]:
out = text.columnize(items, row_first=row_first, displaywidth=size-1)
nt.assert_equal(out, '\n'.join(items+['']), "row_first={0}".format(row_first))
def eval_formatter_check(f):
ns = dict(n=12, pi=math.pi, stuff='hello there', os=os, u=u"café", b="café")
s = f.format("{n} {n//4} {stuff.split()[0]}", **ns)
nt.assert_equal(s, "12 3 hello")
s = f.format(' '.join(['{n//%i}'%i for i in range(1,8)]), **ns)
nt.assert_equal(s, "12 6 4 3 2 2 1")
s = f.format('{[n//i for i in range(1,8)]}', **ns)
nt.assert_equal(s, "[12, 6, 4, 3, 2, 2, 1]")
s = f.format("{stuff!s}", **ns)
nt.assert_equal(s, ns['stuff'])
s = f.format("{stuff!r}", **ns)
nt.assert_equal(s, repr(ns['stuff']))
# Check with unicode:
s = f.format("{u}", **ns)
nt.assert_equal(s, ns['u'])
# This decodes in a platform dependent manner, but it shouldn't error out
s = f.format("{b}", **ns)
nt.assert_raises(NameError, f.format, '{dne}', **ns)
def eval_formatter_slicing_check(f):
ns = dict(n=12, pi=math.pi, stuff='hello there', os=os)
s = f.format(" {stuff.split()[:]} ", **ns)
nt.assert_equal(s, " ['hello', 'there'] ")
s = f.format(" {stuff.split()[::-1]} ", **ns)
nt.assert_equal(s, " ['there', 'hello'] ")
s = f.format("{stuff[::2]}", **ns)
nt.assert_equal(s, ns['stuff'][::2])
nt.assert_raises(SyntaxError, f.format, "{n:x}", **ns)
def eval_formatter_no_slicing_check(f):
ns = dict(n=12, pi=math.pi, stuff='hello there', os=os)
s = f.format('{n:x} {pi**2:+f}', **ns)
nt.assert_equal(s, "c +9.869604")
s = f.format('{stuff[slice(1,4)]}', **ns)
nt.assert_equal(s, 'ell')
if sys.version_info >= (3, 4):
# String formatting has changed in Python 3.4, so this now works.
s = f.format("{a[:]}", a=[1, 2])
nt.assert_equal(s, "[1, 2]")
else:
nt.assert_raises(SyntaxError, f.format, "{a[:]}")
def test_eval_formatter():
f = text.EvalFormatter()
eval_formatter_check(f)
eval_formatter_no_slicing_check(f)
def test_full_eval_formatter():
f = text.FullEvalFormatter()
eval_formatter_check(f)
eval_formatter_slicing_check(f)
def test_dollar_formatter():
f = text.DollarFormatter()
eval_formatter_check(f)
eval_formatter_slicing_check(f)
ns = dict(n=12, pi=math.pi, stuff='hello there', os=os)
s = f.format("$n", **ns)
nt.assert_equal(s, "12")
s = f.format("$n.real", **ns)
nt.assert_equal(s, "12")
s = f.format("$n/{stuff[:5]}", **ns)
nt.assert_equal(s, "12/hello")
s = f.format("$n $$HOME", **ns)
nt.assert_equal(s, "12 $HOME")
s = f.format("${foo}", foo="HOME")
nt.assert_equal(s, "$HOME")
def test_long_substr():
data = ['hi']
nt.assert_equal(text.long_substr(data), 'hi')
def test_long_substr2():
data = ['abc', 'abd', 'abf', 'ab']
nt.assert_equal(text.long_substr(data), 'ab')
def test_long_substr_empty():
data = []
nt.assert_equal(text.long_substr(data), '')
def test_strip_email():
src = """\
>> >>> def f(x):
>> ... return x+1
>> ...
>> >>> zz = f(2.5)"""
cln = """\
>>> def f(x):
... return x+1
...
>>> zz = f(2.5)"""
nt.assert_equal(text.strip_email_quotes(src), cln)
def test_strip_email2():
src = '> > > list()'
cln = 'list()'
nt.assert_equal(text.strip_email_quotes(src), cln)
def test_LSString():
lss = text.LSString("abc\ndef")
nt.assert_equal(lss.l, ['abc', 'def'])
nt.assert_equal(lss.s, 'abc def')
lss = text.LSString(os.getcwd())
nt.assert_is_instance(lss.p[0], Path)
def test_SList():
sl = text.SList(['a 11', 'b 1', 'a 2'])
nt.assert_equal(sl.n, 'a 11\nb 1\na 2')
nt.assert_equal(sl.s, 'a 11 b 1 a 2')
nt.assert_equal(sl.grep(lambda x: x.startswith('a')), text.SList(['a 11', 'a 2']))
nt.assert_equal(sl.fields(0), text.SList(['a', 'b', 'a']))
nt.assert_equal(sl.sort(field=1, nums=True), text.SList(['b 1', 'a 2', 'a 11']))
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