| import unittest, string |
| from test import support |
| |
| |
| class ModuleTest(unittest.TestCase): |
| |
| def test_attrs(self): |
| string.whitespace |
| string.ascii_lowercase |
| string.ascii_uppercase |
| string.ascii_letters |
| string.digits |
| string.hexdigits |
| string.octdigits |
| string.punctuation |
| string.printable |
| |
| 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) |
| |
| def test_main(): |
| support.run_unittest(ModuleTest) |
| |
| if __name__ == "__main__": |
| test_main() |