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# encoding: utf-8

"""Tests for IPython.utils.text"""

#-----------------------------------------------------------------------------

# 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 nose.tools as nt

from IPython.utils import text

#-----------------------------------------------------------------------------

# Globals

#-----------------------------------------------------------------------------

def test_columnize():

"""Basic columnize tests."""

size = 5

items = [l*size for l in 'abc']

out = text.columnize(items, displaywidth=80)

nt.assert_equal(out, 'aaaaa bbbbb ccccc\n')

out = text.columnize(items, displaywidth=12)

nt.assert_equal(out, 'aaaaa ccccc\nbbbbb\n')

out = text.columnize(items, displaywidth=10)

nt.assert_equal(out, 'aaaaa\nbbbbb\nccccc\n')

def test_columnize_random():

"""Test with random input to hopfully catch edge case """

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, 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

def test_columnize_medium():

"""Test with inputs than shouldn't be wider tahn 80 """

size = 40

items = [l*size for l in 'abc']

out = text.columnize(items, displaywidth=80)

nt.assert_equal(out, '\n'.join(items+['']))

def test_columnize_long():

"""Test columnize with inputs longer than the display window"""

size = 11

items = [l*size for l in 'abc']

out = text.columnize(items, displaywidth=size-1)

nt.assert_equal(out, '\n'.join(items+['']))

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')

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)