Limnoria/test/test_utils.py

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#!/usr/bin/env python
###
# Copyright (c) 2002, Jeremiah Fincher
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions, and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions, and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the author of this software nor the name of
# contributors to this software may be used to endorse or promote products
# derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###
from test import *
import sets
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import utils
class UtilsTest(unittest.TestCase):
def testTimeElapsed(self):
self.assertRaises(ValueError, utils.timeElapsed, 0, 0, seconds=False)
then = 0
now = 0
for now, expected in [(0, '0 seconds'),
(1, '1 second'),
(60, '1 minute and 0 seconds'),
(61, '1 minute and 1 second'),
(62, '1 minute and 2 seconds'),
(122, '2 minutes and 2 seconds'),
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(3722, '1 hour, 2 minutes, and 2 seconds'),
(7322, '2 hours, 2 minutes, and 2 seconds')]:
self.assertEqual(utils.timeElapsed(now - then), expected)
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def testEachSubstring(self):
s = 'foobar'
L = ['f', 'fo', 'foo', 'foob', 'fooba', 'foobar']
self.assertEqual(list(utils.eachSubstring(s)), L)
def testDistance(self):
self.assertEqual(utils.distance('', ''), 0)
self.assertEqual(utils.distance('a', 'b'), 1)
self.assertEqual(utils.distance('a', 'a'), 0)
self.assertEqual(utils.distance('foobar', 'jemfinch'), 8)
self.assertEqual(utils.distance('a', 'ab'), 1)
self.assertEqual(utils.distance('foo', ''), 3)
self.assertEqual(utils.distance('', 'foo'), 3)
self.assertEqual(utils.distance('appel', 'nappe'), 2)
self.assertEqual(utils.distance('nappe', 'appel'), 2)
def testAbbrev(self):
L = ['abc', 'bcd', 'bbe', 'foo', 'fool']
d = utils.abbrev(L)
def getItem(s):
return d[s]
self.assertRaises(KeyError, getItem, 'f')
self.assertRaises(KeyError, getItem, 'fo')
self.assertRaises(KeyError, getItem, 'b')
self.assertEqual(d['bb'], 'bbe')
self.assertEqual(d['bc'], 'bcd')
self.assertEqual(d['a'], 'abc')
self.assertEqual(d['ab'], 'abc')
self.assertEqual(d['fool'], 'fool')
self.assertEqual(d['foo'], 'foo')
def testSoundex(self):
L = [('Euler', 'E460'),
('Ellery', 'E460'),
('Gauss', 'G200'),
('Ghosh', 'G200'),
('Hilbert', 'H416'),
('Heilbronn', 'H416'),
('Knuth', 'K530'),
('Kant', 'K530'),
('Lloyd', 'L300'),
('Ladd', 'L300'),
('Lukasiewicz', 'L222'),
('Lissajous', 'L222')]
for (name, key) in L:
soundex = utils.soundex(name)
self.assertEqual(soundex, key,
'%s was %s, not %s' % (name, soundex, key))
self.assertRaises(ValueError, utils.soundex, '3')
self.assertRaises(ValueError, utils.soundex, "'")
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def testDQRepr(self):
L = ['foo', 'foo\'bar', 'foo"bar', '"', '\\', '', '\x00']
for s in L:
r = utils.dqrepr(s)
self.assertEqual(s, eval(r), s)
self.failUnless(r[0] == '"' and r[-1] == '"', s)
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def testPerlReToPythonRe(self):
r = utils.perlReToPythonRe('m/foo/')
self.failUnless(r.search('foo'))
r = utils.perlReToPythonRe('/foo/')
self.failUnless(r.search('foo'))
r = utils.perlReToPythonRe('m/\\//')
self.failUnless(r.search('/'))
r = utils.perlReToPythonRe('m/cat/i')
self.failUnless(r.search('CAT'))
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def testPerlReToReplacer(self):
f = utils.perlReToReplacer('s/foo/bar/')
self.assertEqual(f('foobarbaz'), 'barbarbaz')
f = utils.perlReToReplacer('s/fool/bar/')
self.assertEqual(f('foobarbaz'), 'foobarbaz')
f = utils.perlReToReplacer('s/foo//')
self.assertEqual(f('foobarbaz'), 'barbaz')
f = utils.perlReToReplacer('s/ba//')
self.assertEqual(f('foobarbaz'), 'foorbaz')
f = utils.perlReToReplacer('s/ba//g')
self.assertEqual(f('foobarbaz'), 'foorz')
f = utils.perlReToReplacer('s/ba\\///g')
self.assertEqual(f('fooba/rba/z'), 'foorz')
f = utils.perlReToReplacer('s/cat/dog/i')
self.assertEqual(f('CATFISH'), 'dogFISH')
f = utils.perlReToReplacer('s/foo/foo\/bar/')
self.assertEqual(f('foo'), 'foo/bar')
def testFindBinaryInPath(self):
if os.name == 'posix':
self.assertEqual(None, utils.findBinaryInPath('asdfhjklasdfhjkl'))
self.assertEqual('/bin/sh', utils.findBinaryInPath('sh'))
def testCommaAndify(self):
L = ['foo']
original = L[:]
self.assertEqual(utils.commaAndify(L), 'foo')
self.assertEqual(utils.commaAndify(L, 'or'), 'foo')
self.assertEqual(L, original)
L.append('bar')
original = L[:]
self.assertEqual(utils.commaAndify(L), 'foo and bar')
self.assertEqual(utils.commaAndify(L, 'or'), 'foo or bar')
self.assertEqual(L, original)
L.append('baz')
original = L[:]
self.assertEqual(utils.commaAndify(L), 'foo, bar, and baz')
self.assertEqual(utils.commaAndify(L, 'or'), 'foo, bar, or baz')
self.assertEqual(L, original)
self.failUnless(utils.commaAndify(sets.Set(L)))
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def testUnCommaThe(self):
self.assertEqual(utils.unCommaThe('foo bar'), 'foo bar')
self.assertEqual(utils.unCommaThe('foo bar, the'), 'the foo bar')
self.assertEqual(utils.unCommaThe('foo bar, The'), 'The foo bar')
self.assertEqual(utils.unCommaThe('foo bar,the'), 'the foo bar')
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def testNormalizeWhitespace(self):
self.assertEqual(utils.normalizeWhitespace('foo bar'), 'foo bar')
self.assertEqual(utils.normalizeWhitespace('foo\nbar'), 'foo bar')
self.assertEqual(utils.normalizeWhitespace('foo\tbar'), 'foo bar')
def testSortBy(self):
L = ['abc', 'z', 'AD']
utils.sortBy(len, L)
self.assertEqual(L, ['z', 'AD', 'abc'])
utils.sortBy(str.lower, L)
self.assertEqual(L, ['abc', 'AD', 'z'])
L = ['supybot', 'Supybot']
utils.sortBy(str.lower, L)
self.assertEqual(L, ['supybot', 'Supybot'])
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def testNItems(self):
self.assertEqual(utils.nItems(1, 'tool', 'crazy'), '1 crazy tool')
self.assertEqual(utils.nItems(1, 'tool'), '1 tool')
self.assertEqual(utils.nItems(2, 'tool', 'crazy'), '2 crazy tools')
self.assertEqual(utils.nItems(2, 'tool'), '2 tools')
def testItersplit(self):
from utils import itersplit
L = [1, 2, 3] * 3
s = 'foo bar baz'
self.assertEqual(list(itersplit(lambda x: x == 3, L)),
[[1, 2], [1, 2], [1, 2]])
self.assertEqual(list(itersplit(lambda x: x == 3, L, yieldEmpty=True)),
[[1, 2], [1, 2], [1, 2], []])
self.assertEqual(list(itersplit(lambda x: x, [])), [])
self.assertEqual(list(itersplit(lambda c: c.isspace(), s)),
map(list, s.split()))
self.assertEqual(list(itersplit('for'.__eq__, ['foo', 'for', 'bar'])),
[['foo'], ['bar']])
self.assertEqual(list(itersplit('for'.__eq__,
['foo','for','bar','for', 'baz'], 1)),
[['foo'], ['bar', 'for', 'baz']])
def testIterableMap(self):
class alist(utils.IterableMap):
def __init__(self):
self.L = []
def __setitem__(self, key, value):
self.L.append((key, value))
def iteritems(self):
for (k, v) in self.L:
yield (k, v)
AL = alist()
self.failIf(AL)
AL[1] = 2
AL[2] = 3
AL[3] = 4
self.failUnless(AL)
self.assertEqual(AL.items(), [(1, 2), (2, 3), (3, 4)])
self.assertEqual(list(AL.iteritems()), [(1, 2), (2, 3), (3, 4)])
self.assertEqual(AL.keys(), [1, 2, 3])
self.assertEqual(list(AL.iterkeys()), [1, 2, 3])
self.assertEqual(AL.values(), [2, 3, 4])
self.assertEqual(list(AL.itervalues()), [2, 3, 4])
self.assertEqual(len(AL), 3)
def testFlatten(self):
def lflatten(seq):
return list(utils.flatten(seq))
self.assertEqual(lflatten([]), [])
self.assertEqual(lflatten([1]), [1])
self.assertEqual(lflatten(range(10)), range(10))
twoRanges = range(10)*2
twoRanges.sort()
self.assertEqual(lflatten(zip(range(10), range(10))), twoRanges)
self.assertEqual(lflatten([1, [2, 3], 4]), [1, 2, 3, 4])
self.assertEqual(lflatten([[[[[[[[[[]]]]]]]]]]), [])
self.assertEqual(lflatten([1, [2, [3, 4], 5], 6]), [1, 2, 3, 4, 5, 6])
self.assertRaises(TypeError, lflatten, 1)
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def testEllipsisify(self):
f = utils.ellipsisify
self.assertEqual(f('x'*30, 30), 'x'*30)
self.failUnless(len(f('x'*35, 30)) <= 30)
self.failUnless(f(' '.join(['xxxx']*10), 30)[:-3].endswith('xxxx'))
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