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# encoding: utf-8
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"""Tests for IPython.utils.text"""
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from __future__ import print_function
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#-----------------------------------------------------------------------------
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# Copyright (C) 2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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import os
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import math
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import random
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import sys
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import nose.tools as nt
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try:
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from pathlib import Path
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except ImportError:
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# Python 2 backport
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from pathlib2 import Path
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from IPython.utils import text
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#-----------------------------------------------------------------------------
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# Globals
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#-----------------------------------------------------------------------------
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def test_columnize():
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"""Basic columnize tests."""
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size = 5
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items = [l*size for l in 'abcd']
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out = text.columnize(items, displaywidth=80)
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nt.assert_equal(out, 'aaaaa bbbbb ccccc ddddd\n')
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out = text.columnize(items, displaywidth=25)
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nt.assert_equal(out, 'aaaaa ccccc\nbbbbb ddddd\n')
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out = text.columnize(items, displaywidth=12)
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nt.assert_equal(out, 'aaaaa ccccc\nbbbbb ddddd\n')
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out = text.columnize(items, displaywidth=10)
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nt.assert_equal(out, 'aaaaa\nbbbbb\nccccc\nddddd\n')
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out = text.columnize(items, row_first=True, displaywidth=80)
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nt.assert_equal(out, 'aaaaa bbbbb ccccc ddddd\n')
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out = text.columnize(items, row_first=True, displaywidth=25)
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nt.assert_equal(out, 'aaaaa bbbbb\nccccc ddddd\n')
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out = text.columnize(items, row_first=True, displaywidth=12)
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nt.assert_equal(out, 'aaaaa bbbbb\nccccc ddddd\n')
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out = text.columnize(items, row_first=True, displaywidth=10)
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nt.assert_equal(out, 'aaaaa\nbbbbb\nccccc\nddddd\n')
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out = text.columnize(items, displaywidth=40, spread=True)
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nt.assert_equal(out, 'aaaaa bbbbb ccccc ddddd\n')
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out = text.columnize(items, displaywidth=20, spread=True)
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nt.assert_equal(out, 'aaaaa ccccc\nbbbbb ddddd\n')
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out = text.columnize(items, displaywidth=12, spread=True)
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nt.assert_equal(out, 'aaaaa ccccc\nbbbbb ddddd\n')
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out = text.columnize(items, displaywidth=10, spread=True)
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nt.assert_equal(out, 'aaaaa\nbbbbb\nccccc\nddddd\n')
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def test_columnize_random():
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"""Test with random input to hopfully catch edge case """
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for row_first in [True, False]:
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for nitems in [random.randint(2,70) for i in range(2,20)]:
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displaywidth = random.randint(20,200)
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rand_len = [random.randint(2,displaywidth) for i in range(nitems)]
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items = ['x'*l for l in rand_len]
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out = text.columnize(items, row_first=row_first, displaywidth=displaywidth)
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longer_line = max([len(x) for x in out.split('\n')])
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longer_element = max(rand_len)
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if longer_line > displaywidth:
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print("Columnize displayed something lager than displaywidth : %s " % longer_line)
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print("longer element : %s " % longer_element)
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print("displaywidth : %s " % displaywidth)
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print("number of element : %s " % nitems)
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print("size of each element :\n %s" % rand_len)
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assert False, "row_first={0}".format(row_first)
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def test_columnize_medium():
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"""Test with inputs than shouldn't be wider than 80"""
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size = 40
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items = [l*size for l in 'abc']
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for row_first in [True, False]:
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out = text.columnize(items, row_first=row_first, displaywidth=80)
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nt.assert_equal(out, '\n'.join(items+['']), "row_first={0}".format(row_first))
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def test_columnize_long():
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"""Test columnize with inputs longer than the display window"""
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size = 11
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items = [l*size for l in 'abc']
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for row_first in [True, False]:
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out = text.columnize(items, row_first=row_first, displaywidth=size-1)
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nt.assert_equal(out, '\n'.join(items+['']), "row_first={0}".format(row_first))
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def eval_formatter_check(f):
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ns = dict(n=12, pi=math.pi, stuff='hello there', os=os, u=u"café", b="café")
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s = f.format("{n} {n//4} {stuff.split()[0]}", **ns)
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nt.assert_equal(s, "12 3 hello")
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s = f.format(' '.join(['{n//%i}'%i for i in range(1,8)]), **ns)
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nt.assert_equal(s, "12 6 4 3 2 2 1")
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s = f.format('{[n//i for i in range(1,8)]}', **ns)
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nt.assert_equal(s, "[12, 6, 4, 3, 2, 2, 1]")
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s = f.format("{stuff!s}", **ns)
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nt.assert_equal(s, ns['stuff'])
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s = f.format("{stuff!r}", **ns)
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nt.assert_equal(s, repr(ns['stuff']))
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# Check with unicode:
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s = f.format("{u}", **ns)
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nt.assert_equal(s, ns['u'])
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# This decodes in a platform dependent manner, but it shouldn't error out
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s = f.format("{b}", **ns)
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nt.assert_raises(NameError, f.format, '{dne}', **ns)
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def eval_formatter_slicing_check(f):
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ns = dict(n=12, pi=math.pi, stuff='hello there', os=os)
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s = f.format(" {stuff.split()[:]} ", **ns)
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nt.assert_equal(s, " ['hello', 'there'] ")
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s = f.format(" {stuff.split()[::-1]} ", **ns)
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nt.assert_equal(s, " ['there', 'hello'] ")
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s = f.format("{stuff[::2]}", **ns)
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nt.assert_equal(s, ns['stuff'][::2])
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nt.assert_raises(SyntaxError, f.format, "{n:x}", **ns)
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def eval_formatter_no_slicing_check(f):
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ns = dict(n=12, pi=math.pi, stuff='hello there', os=os)
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s = f.format('{n:x} {pi**2:+f}', **ns)
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nt.assert_equal(s, "c +9.869604")
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s = f.format('{stuff[slice(1,4)]}', **ns)
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nt.assert_equal(s, 'ell')
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if sys.version_info >= (3, 4):
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# String formatting has changed in Python 3.4, so this now works.
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s = f.format("{a[:]}", a=[1, 2])
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nt.assert_equal(s, "[1, 2]")
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else:
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nt.assert_raises(SyntaxError, f.format, "{a[:]}")
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def test_eval_formatter():
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f = text.EvalFormatter()
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eval_formatter_check(f)
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eval_formatter_no_slicing_check(f)
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def test_full_eval_formatter():
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f = text.FullEvalFormatter()
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eval_formatter_check(f)
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eval_formatter_slicing_check(f)
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def test_dollar_formatter():
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f = text.DollarFormatter()
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eval_formatter_check(f)
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eval_formatter_slicing_check(f)
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ns = dict(n=12, pi=math.pi, stuff='hello there', os=os)
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s = f.format("$n", **ns)
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nt.assert_equal(s, "12")
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s = f.format("$n.real", **ns)
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nt.assert_equal(s, "12")
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s = f.format("$n/{stuff[:5]}", **ns)
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nt.assert_equal(s, "12/hello")
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s = f.format("$n $$HOME", **ns)
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nt.assert_equal(s, "12 $HOME")
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s = f.format("${foo}", foo="HOME")
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nt.assert_equal(s, "$HOME")
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def test_long_substr():
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data = ['hi']
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nt.assert_equal(text.long_substr(data), 'hi')
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def test_long_substr2():
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data = ['abc', 'abd', 'abf', 'ab']
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nt.assert_equal(text.long_substr(data), 'ab')
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def test_long_substr_empty():
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data = []
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nt.assert_equal(text.long_substr(data), '')
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def test_strip_email():
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src = """\
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>> >>> def f(x):
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>> ... return x+1
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>> ...
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>> >>> zz = f(2.5)"""
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cln = """\
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>>> def f(x):
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... return x+1
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...
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>>> zz = f(2.5)"""
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nt.assert_equal(text.strip_email_quotes(src), cln)
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def test_strip_email2():
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src = '> > > list()'
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cln = 'list()'
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nt.assert_equal(text.strip_email_quotes(src), cln)
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def test_LSString():
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lss = text.LSString("abc\ndef")
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nt.assert_equal(lss.l, ['abc', 'def'])
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nt.assert_equal(lss.s, 'abc def')
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lss = text.LSString(os.getcwd())
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nt.assert_is_instance(lss.p[0], Path)
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def test_SList():
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sl = text.SList(['a 11', 'b 1', 'a 2'])
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nt.assert_equal(sl.n, 'a 11\nb 1\na 2')
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nt.assert_equal(sl.s, 'a 11 b 1 a 2')
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nt.assert_equal(sl.grep(lambda x: x.startswith('a')), text.SList(['a 11', 'a 2']))
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nt.assert_equal(sl.fields(0), text.SList(['a', 'b', 'a']))
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nt.assert_equal(sl.sort(field=1, nums=True), text.SList(['b 1', 'a 2', 'a 11']))
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