import unittest
import string
from string import Template
from test import test_support, string_tests
from UserList import UserList
class StringTest(
string_tests.CommonTest,
string_tests.MixinStrStringUserStringTest
):
type2test = str
def checkequal(self, result, object, methodname, *args):
realresult = getattr(string, methodname)(object, *args)
self.assertEqual(
result,
realresult
)
def checkraises(self, exc, obj, methodname, *args):
with self.assertRaises(exc) as cm:
getattr(string, methodname)(obj, *args)
self.assertNotEqual(cm.exception.args[0], '')
def checkcall(self, object, methodname, *args):
getattr(string, methodname)(object, *args)
def test_join(self):
# These are the same checks as in string_test.ObjectTest.test_join
# but the argument order ist different
self.checkequal('a b c d', ['a', 'b', 'c', 'd'], 'join', ' ')
self.checkequal('abcd', ('a', 'b', 'c', 'd'), 'join', '')
self.checkequal('w x y z', string_tests.Sequence(), 'join', ' ')
self.checkequal('abc', ('abc',), 'join', 'a')
self.checkequal('z', UserList(['z']), 'join', 'a')
if test_support.have_unicode:
self.checkequal(unicode('a.b.c'), ['a', 'b', 'c'], 'join', unicode('.'))
self.checkequal(unicode('a.b.c'), [unicode('a'), 'b', 'c'], 'join', '.')
self.checkequal(unicode('a.b.c'), ['a', unicode('b'), 'c'], 'join', '.')
self.checkequal(unicode('a.b.c'), ['a', 'b', unicode('c')], 'join', '.')
self.checkraises(TypeError, ['a', unicode('b'), 3], 'join', '.')
for i in [5, 25, 125]:
self.checkequal(
((('a' * i) + '-') * i)[:-1],
['a' * i] * i, 'join', '-')
self.checkequal(
((('a' * i) + '-') * i)[:-1],
('a' * i,) * i, 'join', '-')
self.checkraises(TypeError, string_tests.BadSeq1(), 'join', ' ')
self.checkequal('a b c', string_tests.BadSeq2(), 'join', ' ')
try:
def f():
yield 4 + ""
self.fixtype(' ').join(f())
except TypeError, e:
if '+' not in str(e):
self.fail('join() ate exception message')
else:
self.fail('exception not raised')
class ModuleTest(unittest.TestCase):
def test_attrs(self):
string.whitespace
string.lowercase
string.uppercase
string.letters
string.digits
string.hexdigits
string.octdigits
string.punctuation
string.printable
def test_atoi(self):
self.assertEqual(string.atoi(" 1 "), 1)
self.assertRaises(ValueError, string.atoi, " 1x")
self.assertRaises(ValueError, string.atoi, " x1 ")
def test_atol(self):
self.assertEqual(string.atol(" 1 "), 1L)
self.assertRaises(ValueError, string.atol, " 1x ")
self.assertRaises(ValueError, string.atol, " x1 ")
def test_atof(self):
self.assertAlmostEqual(string.atof(" 1 "), 1.0)
self.assertRaises(ValueError, string.atof, " 1x ")
self.assertRaises(ValueError, string.atof, " x1 ")
def test_maketrans(self):
transtable = '\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037 !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`xyzdefghijklmnopqrstuvwxyz{|}~\177\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377'
self.assertEqual(string.maketrans('abc', 'xyz'), transtable)
self.assertRaises(ValueError, string.maketrans, 'abc', 'xyzq')
def test_capwords(self):
self.assertEqual(string.capwords('abc def ghi'), 'Abc Def Ghi')
self.assertEqual(string.capwords('abc\tdef\nghi'), 'Abc Def Ghi')
self.assertEqual(string.capwords('abc\t def \nghi'), 'Abc Def Ghi')
self.assertEqual(string.capwords('ABC DEF GHI'), 'Abc Def Ghi')
self.assertEqual(string.capwords('ABC-DEF-GHI', '-'), 'Abc-Def-Ghi')
self.assertEqual(string.capwords('ABC-def DEF-ghi GHI'), 'Abc-def Def-ghi Ghi')
self.assertEqual(string.capwords(' aBc DeF '), 'Abc Def')
self.assertEqual(string.capwords('\taBc\tDeF\t'), 'Abc Def')
self.assertEqual(string.capwords('\taBc\tDeF\t', '\t'), '\tAbc\tDef\t')
def test_formatter(self):
fmt = string.Formatter()
self.assertEqual(fmt.format("foo"), "foo")
self.assertEqual(fmt.format("foo{0}", "bar"), "foobar")
self.assertEqual(fmt.format("foo{1}{0}-{1}", "bar", 6), "foo6bar-6")
self.assertEqual(fmt.format("-{arg!r}-", arg='test'), "-'test'-")
# override get_value ############################################
class NamespaceFormatter(string.Formatter):
def __init__(self, namespace={}):
string.Formatter.__init__(self)
self.namespace = namespace
def get_value(self, key, args, kwds):
if isinstance(key, str):
try:
# Check explicitly passed arguments first
return kwds[key]
except KeyError:
return self.namespace[key]
else:
string.Formatter.get_value(key, args, kwds)
fmt = NamespaceFormatter({'greeting':'hello'})
self.assertEqual(fmt.format("{greeting}, world!"), 'hello, world!')
# override format_field #########################################
class CallFormatter(string.Formatter):
def format_field(self, value, format_spec):
return format(value(), format_spec)
fmt = CallFormatter()
self.assertEqual(fmt.format('*{0}*', lambda : 'result'), '*result*')
# override convert_field ########################################
class XFormatter(string.Formatter):
def convert_field(self, value, conversion):
if conversion == 'x':
return None
return super(XFormatter, self).convert_field(value, conversion)
fmt = XFormatter()
self.assertEqual(fmt.format("{0!r}:{0!x}", 'foo', 'foo'), "'foo':None")
# override parse ################################################
class BarFormatter(string.Formatter):
# returns an iterable that contains tuples of the form:
# (literal_text, field_name, format_spec, conversion)
def parse(self, format_string):
for field in format_string.split('|'):
if field[0] == '+':
# it's markup
field_name, _, format_spec = field[1:].partition(':')
yield '', field_name, format_spec, None
else:
yield field, None, None, None
fmt = BarFormatter()
self.assertEqual(fmt.format('*|+0:^10s|*', 'foo'), '* foo *')
# test all parameters used
class CheckAllUsedFormatter(string.Formatter):
def check_unused_args(self, used_args, args, kwargs):
# Track which arguments actually got used
unused_args = set(kwargs.keys())
unused_args.update(range(0, len(args)))
for arg in used_args:
unused_args.remove(arg)
if unused_args:
raise ValueError("unused arguments")
fmt = CheckAllUsedFormatter()
self.assertEqual(fmt.format("{0}", 10), "10")
self.assertEqual(fmt.format("{0}{i}", 10, i=100), "10100")
self.assertEqual(fmt.format("{0}{i}{1}", 10, 20, i=100), "1010020")
self.assertRaises(ValueError, fmt.format, "{0}{i}{1}", 10, 20, i=100, j=0)
self.assertRaises(ValueError, fmt.format, "{0}", 10, 20)
self.assertRaises(ValueError, fmt.format, "{0}", 10, 20, i=100)
self.assertRaises(ValueError, fmt.format, "{i}", 10, 20, i=100)
# Alternate formatting is not supported
self.assertRaises(ValueError, format, '', '#')
self.assertRaises(ValueError, format, '', '#20')
def test_format_keyword_arguments(self):
fmt = string.Formatter()
self.assertEqual(fmt.format("-{arg}-", arg='test'), '-test-')
self.assertRaises(KeyError, fmt.format, "-{arg}-")
self.assertEqual(fmt.format("-{self}-", self='test'), '-test-')
self.assertRaises(KeyError, fmt.format, "-{self}-")
self.assertEqual(fmt.format("-{format_string}-", format_string='test'),
'-test-')
self.assertRaises(KeyError, fmt.format, "-{format_string}-")
self.assertEqual(fmt.format(arg='test', format_string="-{arg}-"),
'-test-')
class BytesAliasTest(unittest.TestCase):
def test_builtin(self):
self.assertTrue(str is bytes)
def test_syntax(self):
self.assertEqual(b"spam", "spam")
self.assertEqual(br"egg\foo", "egg\\foo")
self.assertTrue(type(b""), str)
self.assertTrue(type(br""), str)
# Template tests (formerly housed in test_pep292.py)
class Bag:
pass
class Mapping:
def __getitem__(self, name):
obj = self
for part in name.split('.'):
try:
obj = getattr(obj, part)
except AttributeError:
raise KeyError(name)
return obj
class TestTemplate(unittest.TestCase):
def test_regular_templates(self):
s = Template('$who likes to eat a bag of $what worth $$100')
self.assertEqual(s.substitute(dict(who='tim', what='ham')),
'tim likes to eat a bag of ham worth $100')
self.assertRaises(KeyError, s.substitute, dict(who='tim'))
self.assertRaises(TypeError, Template.substitute)
def test_regular_templates_with_braces(self):
s = Template('$who likes ${what} for ${meal}')
d = dict(who='tim', what='ham', meal='dinner')
self.assertEqual(s.substitute(d), 'tim likes ham for dinner')
self.assertRaises(KeyError, s.substitute,
dict(who='tim', what='ham'))
def test_escapes(self):
eq = self.assertEqual
s = Template('$who likes to eat a bag of $$what worth $$100')
eq(s.substitute(dict(who='tim', what='ham')),
'tim likes to eat a bag of $what worth $100')
s = Template('$who likes $$')
eq(s.substitute(dict(who='tim', what='ham')), 'tim likes $')
def test_percents(self):
eq = self.assertEqual
s = Template('%(foo)s $foo ${foo}')
d = dict(foo='baz')
eq(s.substitute(d), '%(foo)s baz baz')
eq(s.safe_substitute(d), '%(foo)s baz baz')
def test_stringification(self):
eq = self.assertEqual
s = Template('tim has eaten $count bags of ham today')
d = dict(count=7)
eq(s.substitute(d), 'tim has eaten 7 bags of ham today')
eq(s.safe_substitute(d), 'tim has eaten 7 bags of ham today')
s = Template('tim has eaten ${count} bags of ham today')
eq(s.substitute(d), 'tim has eaten 7 bags of ham today')
def test_tupleargs(self):
eq = self.assertEqual
s = Template('$who ate ${meal}')
d = dict(who=('tim', 'fred'), meal=('ham', 'kung pao'))
eq(s.substitute(d), "('tim', 'fred') ate ('ham', 'kung pao')")
eq(s.safe_substitute(d), "('tim', 'fred') ate ('ham', 'kung pao')")
def test_SafeTemplate(self):
eq = self.assertEqual
s = Template('$who likes ${what} for ${meal}')
eq(s.safe_substitute(dict(who='tim')), 'tim likes ${what} for ${meal}')
eq(s.safe_substitute(dict(what='ham')), '$who likes ham for ${meal}')
eq(s.safe_substitute(dict(what='ham', meal='dinner')),
'$who likes ham for dinner')
eq(s.safe_substitute(dict(who='tim', what='ham')),
'tim likes ham for ${meal}')
eq(s.safe_substitute(dict(who='tim', what='ham', meal='dinner')),
'tim likes ham for dinner')
def test_invalid_placeholders(self):
raises = self.assertRaises
s = Template('$who likes $')
raises(ValueError, s.substitute, dict(who='tim'))
s = Template('$who likes ${what)')
raises(ValueError, s.substitute, dict(who='tim'))
s = Template('$who likes $100')
raises(ValueError, s.substitute, dict(who='tim'))
def test_idpattern_override(self):
class PathPattern(Template):
idpattern = r'[_a-z][._a-z0-9]*'
m = Mapping()
m.bag = Bag()
m.bag.foo = Bag()
m.bag.foo.who = 'tim'
m.bag.what = 'ham'
s = PathPattern('$bag.foo.who likes to eat a bag of $bag.what')
self.assertEqual(s.substitute(m), 'tim likes to eat a bag of ham')
def test_pattern_override(self):
class MyPattern(Template):
pattern = r"""
(?P<escaped>@{2}) |
@(?P<named>[_a-z][._a-z0-9]*) |
@{(?P<braced>[_a-z][._a-z0-9]*)} |
(?P<invalid>@)
"""
m = Mapping()
m.bag = Bag()
m.bag.foo = Bag()
m.bag.foo.who = 'tim'
m.bag.what = 'ham'
s = MyPattern('@bag.foo.who likes to eat a bag of @bag.what')
self.assertEqual(s.substitute(m), 'tim likes to eat a bag of ham')
class BadPattern(Template):
pattern = r"""
(?P<badname>.*) |
(?P<escaped>@{2}) |
@(?P<named>[_a-z][._a-z0-9]*) |
@{(?P<braced>[_a-z][._a-z0-9]*)} |
(?P<invalid>@) |
"""
s = BadPattern('@bag.foo.who likes to eat a bag of @bag.what')
self.assertRaises(ValueError, s.substitute, {})
self.assertRaises(ValueError, s.safe_substitute, {})
def test_braced_override(self):
class MyTemplate(Template):
pattern = r"""
\$(?:
(?P<escaped>$) |
(?P<named>[_a-z][_a-z0-9]*) |
@@(?P<braced>[_a-z][_a-z0-9]*)@@ |
(?P<invalid>) |
)
"""
tmpl = 'PyCon in $@@location@@'
t = MyTemplate(tmpl)
self.assertRaises(KeyError, t.substitute, {})
val = t.substitute({'location': 'Cleveland'})
self.assertEqual(val, 'PyCon in Cleveland')
def test_braced_override_safe(self):
class MyTemplate(Template):
pattern = r"""
\$(?:
(?P<escaped>$) |
(?P<named>[_a-z][_a-z0-9]*) |
@@(?P<braced>[_a-z][_a-z0-9]*)@@ |
(?P<invalid>) |
)
"""
tmpl = 'PyCon in $@@location@@'
t = MyTemplate(tmpl)
self.assertEqual(t.safe_substitute(), tmpl)
val = t.safe_substitute({'location': 'Cleveland'})
self.assertEqual(val, 'PyCon in Cleveland')
def test_unicode_values(self):
s = Template('$who likes $what')
d = dict(who=u't\xffm', what=u'f\xfe\fed')
self.assertEqual(s.substitute(d), u't\xffm likes f\xfe\x0ced')
def test_keyword_arguments(self):
eq = self.assertEqual
s = Template('$who likes $what')
eq(s.substitute(who='tim', what='ham'), 'tim likes ham')
eq(s.substitute(dict(who='tim'), what='ham'), 'tim likes ham')
eq(s.substitute(dict(who='fred', what='kung pao'),
who='tim', what='ham'),
'tim likes ham')
s = Template('the mapping is $mapping')
eq(s.substitute(dict(foo='none'), mapping='bozo'),
'the mapping is bozo')
eq(s.substitute(dict(mapping='one'), mapping='two'),
'the mapping is two')
s = Template('the self is $self')
eq(s.substitute(self='bozo'), 'the self is bozo')
def test_keyword_arguments_safe(self):
eq = self.assertEqual
raises = self.assertRaises
s = Template('$who likes $what')
eq(s.safe_substitute(who='tim', what='ham'), 'tim likes ham')
eq(s.safe_substitute(dict(who='tim'), what='ham'), 'tim likes ham')
eq(s.safe_substitute(dict(who='fred', what='kung pao'),
who='tim', what='ham'),
'tim likes ham')
s = Template('the mapping is $mapping')
eq(s.safe_substitute(dict(foo='none'), mapping='bozo'),
'the mapping is bozo')
eq(s.safe_substitute(dict(mapping='one'), mapping='two'),
'the mapping is two')
d = dict(mapping='one')
raises(TypeError, s.substitute, d, {})
raises(TypeError, s.safe_substitute, d, {})
s = Template('the self is $self')
eq(s.safe_substitute(self='bozo'), 'the self is bozo')
def test_delimiter_override(self):
eq = self.assertEqual
raises = self.assertRaises
class AmpersandTemplate(Template):
delimiter = '&'
s = AmpersandTemplate('this &gift is for &{who} &&')
eq(s.substitute(gift='bud', who='you'), 'this bud is for you &')
raises(KeyError, s.substitute)
eq(s.safe_substitute(gift='bud', who='you'), 'this bud is for you &')
eq(s.safe_substitute(), 'this &gift is for &{who} &')
s = AmpersandTemplate('this &gift is for &{who} &')
raises(ValueError, s.substitute, dict(gift='bud', who='you'))
eq(s.safe_substitute(), 'this &gift is for &{who} &')
class PieDelims(Template):
delimiter = '@'
s = PieDelims('@who likes to eat a bag of @{what} worth $100')
self.assertEqual(s.substitute(dict(who='tim', what='ham')),
'tim likes to eat a bag of ham worth $100')
def test_main():
test_support.run_unittest(StringTest, ModuleTest, BytesAliasTest, TestTemplate)
if __name__ == '__main__':
test_main()