Lib.test.test_format_jy.py Maven / Gradle / Ivy
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Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
"""String formatting tests
Made for Jython.
"""
from test import test_support
import unittest
class FormatSubclass(unittest.TestCase):
# Custom __int__ and __float__ should be respected by %-formatting
def test_int_conversion_support(self):
class Foo(object):
def __init__(self, x): self.x = x
def __int__(self): return self. x
self.assertEqual('1', '%d' % Foo(1))
self.assertEqual('1', '%d' % Foo(1L)) # __int__ can return a long, but
# it should be accepted too
def test_float_conversion_support(self):
class Foo(object):
def __init__(self, x): self.x = x
def __float__(self): return self. x
self.assertEqual('1.0', '%.1f' % Foo(1.0))
class FormatUnicodeBase(unittest.TestCase):
# Test padding non-BMP result
def test_pad_string(self):
self.padcheck(u"architect")
self.padcheck(u'a\U00010001cde')
class FormatUnicodeClassic(FormatUnicodeBase):
# Check using %-formatting
def padcheck(self, s):
self.assertEqual(10, len('%10.4s' % s))
self.assertEqual(u' '*6 + s[0:4], '%10.4s' % s)
self.assertEqual(u' '*6 + s[0:4], '% 10.4s' % s)
self.assertEqual(u' '*6 + s[0:4], '%010.4s' % s)
self.assertEqual(s[0:3] + u' '*5, '%-8.3s' % s)
class FormatUnicodeModern(FormatUnicodeBase):
# Check using __format__
def padcheck(self, s):
self.assertEqual(10, len(format(s, '10.4s')))
self.assertEqual(s[0:3] + u' '*7, format(s, '10.3s'))
self.assertEqual(s[0:3] + u'~'*7, format(s, '~<10.3s'))
self.assertEqual(s[0:3] + u'~'*7, format(s, '~<10.3'))
self.assertEqual(u' '*6 + s[0:4], format(s, '>10.4s'))
self.assertEqual(u'*'*6 + s[0:4], format(s, '*>10.4s'))
self.assertEqual(u'*'*6 + s[0:4], format(s, '*>10.4'))
class FormatMisc(unittest.TestCase):
# Odd tests Jython used to fail
def test_str_format_unicode(self):
# Check unicode is down-converted to str silently if possible
self.assertEqual("full half hour", "full {:s} hour".format(u"half"))
self.assertEqual("full \xbd hour", "full {:s} hour".format("\xbd"))
self.assertRaises(UnicodeEncodeError, "full {:s} hour".format, u"\xbd")
self.assertEqual(u"full \xbd hour", u"full {:s} hour".format(u"\xbd"))
def test_mixtures(self) :
# Check formatting to a common buffer in PyString
result = 'The cube of 0.5 -0.866j is -1 to 0.01%.'
self.assertEqual(result, 'The %s of %.3g -%.3fj is -%d to %.2f%%.' %
('cube', 0.5, 0.866, 1, 0.01))
self.assertEqual(result, 'The %s of %.3g %.3fj is %d to %.2f%%.' %
('cube', 0.5, -0.866, -1, 0.01))
self.assertEqual(result, 'The%5s of%4.3g%7.3fj is%3d to%5.2f%%.' %
('cube', 0.5, -0.866, -1, 0.01))
self.assertEqual(result, 'The %-5.4sof %-4.3g%.3fj is %-3dto %.4g%%.' %
('cubensis', 0.5, -0.866, -1, 0.01))
def test_percent_padded(self) :
self.assertEqual('%hello', '%%%s' % 'hello')
self.assertEqual(u' %hello', '%6%%s' % u'hello')
self.assertEqual(u'% hello', u'%-6%%s' % 'hello')
self.assertEqual(' %', '%6%' % ())
self.assertEqual(' %', '%06%' % ())
self.assertEqual(' %', '%*%' % 4)
self.assertEqual('% ', '%-6%' % ())
self.assertEqual('% ', '%-06%' % ())
self.assertEqual('% ', '%*%' % -4)
def test_formatter_parser(self):
def check_parse(fmt, expected):
fmt_list = list(fmt._formatter_parser())
#print repr(fmt_list)
self.assertListEqual(fmt_list, expected)
# Tuples elements are strings with type matching fmt or are None
t = (type(fmt), type(None))
for tup in fmt_list :
for s in tup :
self.assertIsInstance(s, t)
# Verify str._formatter_parser()
check_parse('{a:8.2f}', [('', 'a', '8.2f', None)])
check_parse('{a!r}', [('', 'a', '', 'r')])
check_parse('{a.b[2]!r}', [('', 'a.b[2]', '', 'r')])
check_parse('A={a:#12x}', [('A=', 'a', '#12x', None)])
check_parse('Hello {2!r:9s} world!',
[('Hello ', '2', '9s', 'r'), (' world!', None, None, None)])
# Verify unicode._formatter_parser()
check_parse(u'{a:8.2f}', [(u'', u'a', u'8.2f', None)])
check_parse(u'{a!r}', [(u'', u'a', u'', u'r')])
check_parse(u'{a.b[2]!r}', [(u'', u'a.b[2]', u'', u'r')])
check_parse(u'A={a:#12x}', [(u'A=', u'a', u'#12x', None)])
check_parse(u'Hello {2!r:9s} world!',
[(u'Hello ', u'2', u'9s', u'r'), (u' world!', None, None, None)])
# Differs from CPython: Jython str._formatter_parser generates the
# automatic argument number, while CPython leaves it to the client.
check_parse('hello {:{}d} and {:{}.{}f}',
[('hello ', '0', '{}d', None), (' and ', '1', '{}.{}f', None)] )
check_parse('hello {[2]:{}d} and {.xx:{}.{}f}',
[('hello ', '0[2]', '{}d', None), (' and ', '1.xx', '{}.{}f', None)] )
# The result is the same, however, of:
self.assertEqual('hello {:{}d} and {:{}.{}f}'.format(20, 16, 12, 8, 4),
'hello 20 and 12.0000' )
def test_formatter_field_name_split(self):
def check_split(name, xfirst, xrest):
first, r = name._formatter_field_name_split()
rest = list(r)
#print repr(first), repr(rest)
self.assertEqual(first, xfirst)
self.assertListEqual(rest, xrest)
# Types ought to match the original if not numeric
self.assertIsInstance(first, (type(name), int, long))
for is_attr, i in rest :
if is_attr :
self.assertIsInstance(i, type(name))
else :
self.assertIsInstance(i, (int, long))
# Verify str._formatter_field_name_split()
check_split('a', 'a', [])
check_split('2', 2, [])
check_split('.b', '', [(True, 'b')])
check_split('a.b[2]', 'a', [(True, 'b'), (False, 2)])
check_split('a.b[2].c[7]', 'a', [(True, 'b'), (False, 2), (True, 'c'), (False, 7)])
check_split('.b[2].c[7]', '', [(True, 'b'), (False, 2), (True, 'c'), (False, 7)])
check_split('[3].b[2].c[7]', '',
[(False, 3), (True, 'b'), (False, 2), (True, 'c'), (False, 7)])
# Verify unicode._formatter_field_name_split()
check_split(u'a', 'a', [])
check_split(u'2', 2, [])
check_split(u'.b', '', [(True, 'b')])
check_split(u'a.b[2]', 'a', [(True, 'b'), (False, 2)])
check_split(u'a.b[2].c[7]', 'a', [(True, 'b'), (False, 2), (True, 'c'), (False, 7)])
check_split(u'.b[2].c[7]', '', [(True, 'b'), (False, 2), (True, 'c'), (False, 7)])
check_split(u'[3].b[2].c[7]', '',
[(False, 3), (True, 'b'), (False, 2), (True, 'c'), (False, 7)])
def test_main():
test_support.run_unittest(
FormatSubclass,
FormatUnicodeClassic,
FormatUnicodeModern,
FormatMisc,
)
if __name__ == '__main__':
test_main()