463 lines
19 KiB
Python
463 lines
19 KiB
Python
import unittest
|
|
import string
|
|
from string import Template
|
|
|
|
|
|
class ModuleTest(unittest.TestCase):
|
|
|
|
def test_attrs(self):
|
|
# While the exact order of the items in these attributes is not
|
|
# technically part of the "language spec", in practice there is almost
|
|
# certainly user code that depends on the order, so de-facto it *is*
|
|
# part of the spec.
|
|
self.assertEqual(string.whitespace, ' \t\n\r\x0b\x0c')
|
|
self.assertEqual(string.ascii_lowercase, 'abcdefghijklmnopqrstuvwxyz')
|
|
self.assertEqual(string.ascii_uppercase, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ')
|
|
self.assertEqual(string.ascii_letters, string.ascii_lowercase + string.ascii_uppercase)
|
|
self.assertEqual(string.digits, '0123456789')
|
|
self.assertEqual(string.hexdigits, string.digits + 'abcdefABCDEF')
|
|
self.assertEqual(string.octdigits, '01234567')
|
|
self.assertEqual(string.punctuation, '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~')
|
|
self.assertEqual(string.printable, string.digits + string.ascii_lowercase + string.ascii_uppercase + string.punctuation + string.whitespace)
|
|
|
|
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_basic_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.assertRaises(TypeError, fmt.format)
|
|
self.assertRaises(TypeError, string.Formatter.format)
|
|
|
|
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}-")
|
|
with self.assertRaisesRegex(TypeError, "format_string"):
|
|
fmt.format(format_string="-{arg}-", arg='test')
|
|
|
|
def test_auto_numbering(self):
|
|
fmt = string.Formatter()
|
|
self.assertEqual(fmt.format('foo{}{}', 'bar', 6),
|
|
'foo{}{}'.format('bar', 6))
|
|
self.assertEqual(fmt.format('foo{1}{num}{1}', None, 'bar', num=6),
|
|
'foo{1}{num}{1}'.format(None, 'bar', num=6))
|
|
self.assertEqual(fmt.format('{:^{}}', 'bar', 6),
|
|
'{:^{}}'.format('bar', 6))
|
|
self.assertEqual(fmt.format('{:^{}} {}', 'bar', 6, 'X'),
|
|
'{:^{}} {}'.format('bar', 6, 'X'))
|
|
self.assertEqual(fmt.format('{:^{pad}}{}', 'foo', 'bar', pad=6),
|
|
'{:^{pad}}{}'.format('foo', 'bar', pad=6))
|
|
|
|
with self.assertRaises(ValueError):
|
|
fmt.format('foo{1}{}', 'bar', 6)
|
|
|
|
with self.assertRaises(ValueError):
|
|
fmt.format('foo{}{1}', 'bar', 6)
|
|
|
|
def test_conversion_specifiers(self):
|
|
fmt = string.Formatter()
|
|
self.assertEqual(fmt.format("-{arg!r}-", arg='test'), "-'test'-")
|
|
self.assertEqual(fmt.format("{0!s}", 'test'), 'test')
|
|
self.assertRaises(ValueError, fmt.format, "{0!h}", 'test')
|
|
# issue13579
|
|
self.assertEqual(fmt.format("{0!a}", 42), '42')
|
|
self.assertEqual(fmt.format("{0!a}", string.ascii_letters),
|
|
"'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'")
|
|
self.assertEqual(fmt.format("{0!a}", chr(255)), "'\\xff'")
|
|
self.assertEqual(fmt.format("{0!a}", chr(256)), "'\\u0100'")
|
|
|
|
def test_name_lookup(self):
|
|
fmt = string.Formatter()
|
|
class AnyAttr:
|
|
def __getattr__(self, attr):
|
|
return attr
|
|
x = AnyAttr()
|
|
self.assertEqual(fmt.format("{0.lumber}{0.jack}", x), 'lumberjack')
|
|
with self.assertRaises(AttributeError):
|
|
fmt.format("{0.lumber}{0.jack}", '')
|
|
|
|
def test_index_lookup(self):
|
|
fmt = string.Formatter()
|
|
lookup = ["eggs", "and", "spam"]
|
|
self.assertEqual(fmt.format("{0[2]}{0[0]}", lookup), 'spameggs')
|
|
with self.assertRaises(IndexError):
|
|
fmt.format("{0[2]}{0[0]}", [])
|
|
with self.assertRaises(KeyError):
|
|
fmt.format("{0[2]}{0[0]}", {})
|
|
|
|
def test_override_get_value(self):
|
|
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!')
|
|
|
|
|
|
def test_override_format_field(self):
|
|
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*')
|
|
|
|
|
|
def test_override_convert_field(self):
|
|
class XFormatter(string.Formatter):
|
|
def convert_field(self, value, conversion):
|
|
if conversion == 'x':
|
|
return None
|
|
return super().convert_field(value, conversion)
|
|
|
|
fmt = XFormatter()
|
|
self.assertEqual(fmt.format("{0!r}:{0!x}", 'foo', 'foo'), "'foo':None")
|
|
|
|
|
|
def test_override_parse(self):
|
|
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 *')
|
|
|
|
def test_check_unused_args(self):
|
|
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)
|
|
|
|
def test_vformat_recursion_limit(self):
|
|
fmt = string.Formatter()
|
|
args = ()
|
|
kwargs = dict(i=100)
|
|
with self.assertRaises(ValueError) as err:
|
|
fmt._vformat("{i}", args, kwargs, set(), -1)
|
|
self.assertIn("recursion", str(err.exception))
|
|
|
|
|
|
# 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 $100')
|
|
raises(ValueError, s.substitute, dict(who='tim'))
|
|
# Template.idpattern should match to only ASCII characters.
|
|
# https://bugs.python.org/issue31672
|
|
s = Template("$who likes $\u0131") # (DOTLESS I)
|
|
raises(ValueError, s.substitute, dict(who='tim'))
|
|
s = Template("$who likes $\u0130") # (LATIN CAPITAL LETTER I WITH DOT ABOVE)
|
|
raises(ValueError, s.substitute, dict(who='tim'))
|
|
|
|
def test_idpattern_override(self):
|
|
class PathPattern(Template):
|
|
idpattern = r'[_a-z][._a-z0-9]*'
|
|
m = Mapping()
|
|
m.bag = Bag()
|
|
m.bag.foo = Bag()
|
|
m.bag.foo.who = 'tim'
|
|
m.bag.what = 'ham'
|
|
s = PathPattern('$bag.foo.who likes to eat a bag of $bag.what')
|
|
self.assertEqual(s.substitute(m), 'tim likes to eat a bag of ham')
|
|
|
|
def test_idpattern_override_inside_outside(self):
|
|
# bpo-1198569: Allow the regexp inside and outside braces to be
|
|
# different when deriving from Template.
|
|
class MyPattern(Template):
|
|
idpattern = r'[a-z]+'
|
|
braceidpattern = r'[A-Z]+'
|
|
flags = 0
|
|
m = dict(foo='foo', BAR='BAR')
|
|
s = MyPattern('$foo ${BAR}')
|
|
self.assertEqual(s.substitute(m), 'foo BAR')
|
|
|
|
def test_idpattern_override_inside_outside_invalid_unbraced(self):
|
|
# bpo-1198569: Allow the regexp inside and outside braces to be
|
|
# different when deriving from Template.
|
|
class MyPattern(Template):
|
|
idpattern = r'[a-z]+'
|
|
braceidpattern = r'[A-Z]+'
|
|
flags = 0
|
|
m = dict(foo='foo', BAR='BAR')
|
|
s = MyPattern('$FOO')
|
|
self.assertRaises(ValueError, s.substitute, m)
|
|
s = MyPattern('${bar}')
|
|
self.assertRaises(ValueError, s.substitute, m)
|
|
|
|
def test_pattern_override(self):
|
|
class MyPattern(Template):
|
|
pattern = r"""
|
|
(?P<escaped>@{2}) |
|
|
@(?P<named>[_a-z][._a-z0-9]*) |
|
|
@{(?P<braced>[_a-z][._a-z0-9]*)} |
|
|
(?P<invalid>@)
|
|
"""
|
|
m = Mapping()
|
|
m.bag = Bag()
|
|
m.bag.foo = Bag()
|
|
m.bag.foo.who = 'tim'
|
|
m.bag.what = 'ham'
|
|
s = MyPattern('@bag.foo.who likes to eat a bag of @bag.what')
|
|
self.assertEqual(s.substitute(m), 'tim likes to eat a bag of ham')
|
|
|
|
class BadPattern(Template):
|
|
pattern = r"""
|
|
(?P<badname>.*) |
|
|
(?P<escaped>@{2}) |
|
|
@(?P<named>[_a-z][._a-z0-9]*) |
|
|
@{(?P<braced>[_a-z][._a-z0-9]*)} |
|
|
(?P<invalid>@) |
|
|
"""
|
|
s = BadPattern('@bag.foo.who likes to eat a bag of @bag.what')
|
|
self.assertRaises(ValueError, s.substitute, {})
|
|
self.assertRaises(ValueError, s.safe_substitute, {})
|
|
|
|
def test_braced_override(self):
|
|
class MyTemplate(Template):
|
|
pattern = r"""
|
|
\$(?:
|
|
(?P<escaped>$) |
|
|
(?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 $@@location@@'
|
|
t = MyTemplate(tmpl)
|
|
self.assertEqual(t.safe_substitute(), tmpl)
|
|
val = t.safe_substitute({'location': 'Cleveland'})
|
|
self.assertEqual(val, 'PyCon in Cleveland')
|
|
|
|
def test_invalid_with_no_lines(self):
|
|
# The error formatting for invalid templates
|
|
# has a special case for no data that the default
|
|
# pattern can't trigger (always has at least '$')
|
|
# So we craft a pattern that is always invalid
|
|
# with no leading data.
|
|
class MyTemplate(Template):
|
|
pattern = r"""
|
|
(?P<invalid>) |
|
|
unreachable(
|
|
(?P<named>) |
|
|
(?P<braced>) |
|
|
(?P<escaped>)
|
|
)
|
|
"""
|
|
s = MyTemplate('')
|
|
with self.assertRaises(ValueError) as err:
|
|
s.substitute({})
|
|
self.assertIn('line 1, col 1', str(err.exception))
|
|
|
|
def test_unicode_values(self):
|
|
s = Template('$who likes $what')
|
|
d = dict(who='t\xffm', what='f\xfe\fed')
|
|
self.assertEqual(s.substitute(d), 't\xffm likes f\xfe\x0ced')
|
|
|
|
def test_keyword_arguments(self):
|
|
eq = self.assertEqual
|
|
s = Template('$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')
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|