Limnoria/test/test_utils.py

###
# Copyright (c) 2002-2005, Jeremiah Fincher
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###

from supybot.test import *
import sets

import supybot.utils as utils

class UtilsTest(SupyTestCase):
    def testExnToString(self):
        try:
            raise KeyError, 1
        except Exception, e:
            self.assertEqual(utils.exnToString(e), 'KeyError: 1')
        try:
            raise EOFError
        except Exception, e:
            self.assertEqual(utils.exnToString(e), 'EOFError')

    def testMatchCase(self):
        f = utils.matchCase
        self.assertEqual('bar', f('foo', 'bar'))
        self.assertEqual('Bar', f('Foo', 'bar'))
        self.assertEqual('BAr', f('FOo', 'bar'))
        self.assertEqual('BAR', f('FOO', 'bar'))
        self.assertEqual('bAR', f('fOO', 'bar'))
        self.assertEqual('baR', f('foO', 'bar'))
        self.assertEqual('BaR', f('FoO', 'bar'))

    def testPluralize(self):
        f = utils.pluralize
        self.assertEqual('bike', f('bike', 1))
        self.assertEqual('bikes', f('bike', 2))
        self.assertEqual('BIKE', f('BIKE', 1))
        self.assertEqual('BIKES', f('BIKE', 2))
        self.assertEqual('match', f('match', 1))
        self.assertEqual('matches', f('match', 2))
        self.assertEqual('Patch', f('Patch', 1))
        self.assertEqual('Patches', f('Patch', 2))
        self.assertEqual('fish', f('fish', 1))
        self.assertEqual('fishes', f('fish', 2))
        self.assertEqual('try', f('try', 1))
        self.assertEqual('tries', f('try', 2))
        self.assertEqual('day', f('day', 1))
        self.assertEqual('days', f('day', 2))

    def testDepluralize(self):
        f = utils.depluralize
        self.assertEqual('bike', f('bikes'))
        self.assertEqual('Bike', f('Bikes'))
        self.assertEqual('BIKE', f('BIKES'))
        self.assertEqual('match', f('matches'))
        self.assertEqual('Match', f('Matches'))
        self.assertEqual('fish', f('fishes'))
        self.assertEqual('try', f('tries'))

    def testTimeElapsed(self):
        self.assertRaises(ValueError, utils.timeElapsed, 0,
                          leadingZeroes=False, 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'),
                              (3722, '1 hour, 2 minutes, and 2 seconds'),
                              (7322, '2 hours, 2 minutes, and 2 seconds'),
                              (90061,'1 day, 1 hour, 1 minute, and 1 second'),
                              (180122, '2 days, 2 hours, 2 minutes, '
                                       'and 2 seconds')]:
            self.assertEqual(utils.timeElapsed(now - then), expected)

    def timeElapsedShort(self):
        self.assertEqual(utils.timeElapsed(123, short=True), '2m 3s')

    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 testAbbrevFailsWithDups(self):
        L = ['english', 'english']
        self.assertRaises(ValueError, utils.abbrev, L)

    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, "'")


    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)

##     def testQuoted(self):
##         s = 'foo'
##         t = 'let\'s'
##         self.assertEqual("'%s'" % s, utils.quoted(s), s)
##         self.assertEqual('"%s"' % t, utils.quoted(t), t)

    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'))
        self.assertRaises(ValueError, utils.perlReToPythonRe, 'm/?/')

    def testP2PReDifferentSeparator(self):
        r = utils.perlReToPythonRe('m!foo!')
        self.failUnless(r.search('foo'))

    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')
        f = utils.perlReToReplacer('s/^/foo/')
        self.assertEqual(f('bar'), 'foobar')

    def testPReToReplacerDifferentSeparator(self):
        f = utils.perlReToReplacer('s#foo#bar#')
        self.assertEqual(f('foobarbaz'), 'barbarbaz')

    def testPerlReToReplacerBug850931(self):
        f = utils.perlReToReplacer('s/\b(\w+)\b/\1./g')
        self.assertEqual(f('foo bar baz'), 'foo. bar. baz.')

    def testPerlVariableSubstitute(self):
        f = utils.perlVariableSubstitute
        vars = {'foo': 'bar', 'b a z': 'baz', 'b': 'c', 'i': 100,
                'f': lambda: 'called'}
        self.assertEqual(f(vars, '$foo'), 'bar')
        self.assertEqual(f(vars, '${foo}'), 'bar')
        self.assertEqual(f(vars, '$b'), 'c')
        self.assertEqual(f(vars, '${b}'), 'c')
        self.assertEqual(f(vars, '$i'), '100')
        self.assertEqual(f(vars, '${i}'), '100')
        self.assertEqual(f(vars, '$f'), 'called')
        self.assertEqual(f(vars, '${f}'), 'called')
        self.assertEqual(f(vars, '${b a z}'), 'baz')
        self.assertEqual(f(vars, '$b:$i'), 'c:100')
        
                         
    def testFindBinaryInPath(self):
        if os.name == 'posix':
            self.assertEqual(None, utils.findBinaryInPath('asdfhjklasdfhjkl'))
            self.failUnless(utils.findBinaryInPath('sh').endswith('/bin/sh'))

    def testCommaAndify(self):
        L = ['foo']
        original = L[:]
        self.assertEqual(utils.commaAndify(L), 'foo')
        self.assertEqual(utils.commaAndify(L, And='or'), 'foo')
        self.assertEqual(L, original)
        L.append('bar')
        original = L[:]
        self.assertEqual(utils.commaAndify(L), 'foo and bar')
        self.assertEqual(utils.commaAndify(L, And='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, And='or'), 'foo, bar, or baz')
        self.assertEqual(utils.commaAndify(L, comma=';'), 'foo; bar; and baz')
        self.assertEqual(utils.commaAndify(L, comma=';', And='or'),
                         'foo; bar; or baz')
        self.assertEqual(L, original)
        self.failUnless(utils.commaAndify(sets.Set(L)))

    def testCommaAndifyRaisesTypeError(self):
        L = [(2,)]
        self.assertRaises(TypeError, utils.commaAndify, L)
        L.append((3,))
        self.assertRaises(TypeError, utils.commaAndify, L)

    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')

    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'])

    def testSorted(self):
        L = ['a', 'c', 'b']
        self.assertEqual(utils.sorted(L), ['a', 'b', 'c'])
        self.assertEqual(L, ['a', 'c', 'b'])
        def mycmp(x, y):
            return -cmp(x, y)
        self.assertEqual(utils.sorted(L, mycmp), ['c', 'b', 'a'])

    def testNItems(self):
        self.assertEqual(utils.nItems('tool', 1, 'crazy'), '1 crazy tool')
        self.assertEqual(utils.nItems('tool', 1), '1 tool')
        self.assertEqual(utils.nItems('tool', 2, 'crazy'), '2 crazy tools')
        self.assertEqual(utils.nItems('tool', 2), '2 tools')

    def testItersplit(self):
        itersplit = utils.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)

    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'))

    def testSaltHash(self):
        s = utils.saltHash('jemfinch')
        (salt, hash) = s.split('|')
        self.assertEqual(utils.saltHash('jemfinch', salt=salt), s)

    def testSafeEval(self):
        for s in ['1', '()', '(1,)', '[]', '{}', '{1:2}', '{1:(2,3)}',
                  '1.0', '[1,2,3]', 'True', 'False', 'None',
                  '(True,False,None)', '"foo"', '{"foo": "bar"}']:
            self.assertEqual(eval(s), utils.safeEval(s))
        for s in ['lambda: 2', 'import foo', 'foo.bar']:
            self.assertRaises(ValueError, utils.safeEval, s)


    def testSafeEvalTurnsSyntaxErrorIntoValueError(self):
        self.assertRaises(ValueError, utils.safeEval, '/usr/local/')

    def testLines(self):
        L = ['foo', 'bar', '#baz', '  ', 'biff']
        self.assertEqual(list(utils.nonEmptyLines(L)),
                         ['foo', 'bar', '#baz', 'biff'])
        self.assertEqual(list(utils.nonCommentLines(L)),
                         ['foo', 'bar', '  ', 'biff'])
        self.assertEqual(list(utils.nonCommentNonEmptyLines(L)),
                         ['foo', 'bar', 'biff'])

    def testIsIP(self):
        self.failIf(utils.isIP('a.b.c'))
        self.failIf(utils.isIP('256.0.0.0'))
        self.failUnless(utils.isIP('127.1'))
        self.failUnless(utils.isIP('0.0.0.0'))
        self.failUnless(utils.isIP('100.100.100.100'))
        # This test is too flaky to bother with.
        # self.failUnless(utils.isIP('255.255.255.255'))

    def testIsIPV6(self):
        f = utils.isIPV6
        self.failUnless(f('2001::'))
        self.failUnless(f('2001:888:0:1::666'))

    def testInsensitivePreservingDict(self):
        ipd = utils.InsensitivePreservingDict
        d = ipd(dict(Foo=10))
        self.failUnless(d['foo'] == 10)
        self.assertEqual(d.keys(), ['Foo'])
        self.assertEqual(d.get('foo'), 10)
        self.assertEqual(d.get('Foo'), 10)


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