| import struct | |
| import sys | |
| from test import test_support, string_tests | |
| class StrTest( | |
| string_tests.CommonTest, | |
| string_tests.MixinStrUnicodeUserStringTest, | |
| string_tests.MixinStrUserStringTest, | |
| string_tests.MixinStrUnicodeTest, | |
| ): | |
| type2test = str | |
| # We don't need to propagate to str | |
| def fixtype(self, obj): | |
| return obj | |
| def test_basic_creation(self): | |
| self.assertEqual(str(''), '') | |
| self.assertEqual(str(0), '0') | |
| self.assertEqual(str(0L), '0') | |
| self.assertEqual(str(()), '()') | |
| self.assertEqual(str([]), '[]') | |
| self.assertEqual(str({}), '{}') | |
| a = [] | |
| a.append(a) | |
| self.assertEqual(str(a), '[[...]]') | |
| a = {} | |
| a[0] = a | |
| self.assertEqual(str(a), '{0: {...}}') | |
| def test_formatting(self): | |
| string_tests.MixinStrUnicodeUserStringTest.test_formatting(self) | |
| self.assertRaises(OverflowError, '%c'.__mod__, 0x1234) | |
| def test_conversion(self): | |
| # Make sure __str__() behaves properly | |
| class Foo0: | |
| def __unicode__(self): | |
| return u"foo" | |
| class Foo1: | |
| def __str__(self): | |
| return "foo" | |
| class Foo2(object): | |
| def __str__(self): | |
| return "foo" | |
| class Foo3(object): | |
| def __str__(self): | |
| return u"foo" | |
| class Foo4(unicode): | |
| def __str__(self): | |
| return u"foo" | |
| class Foo5(str): | |
| def __str__(self): | |
| return u"foo" | |
| class Foo6(str): | |
| def __str__(self): | |
| return "foos" | |
| def __unicode__(self): | |
| return u"foou" | |
| class Foo7(unicode): | |
| def __str__(self): | |
| return "foos" | |
| def __unicode__(self): | |
| return u"foou" | |
| class Foo8(str): | |
| def __new__(cls, content=""): | |
| return str.__new__(cls, 2*content) | |
| def __str__(self): | |
| return self | |
| class Foo9(str): | |
| def __str__(self): | |
| return "string" | |
| def __unicode__(self): | |
| return "not unicode" | |
| self.assertTrue(str(Foo0()).startswith("<")) # this is different from __unicode__ | |
| self.assertEqual(str(Foo1()), "foo") | |
| self.assertEqual(str(Foo2()), "foo") | |
| self.assertEqual(str(Foo3()), "foo") | |
| self.assertEqual(str(Foo4("bar")), "foo") | |
| self.assertEqual(str(Foo5("bar")), "foo") | |
| self.assertEqual(str(Foo6("bar")), "foos") | |
| self.assertEqual(str(Foo7("bar")), "foos") | |
| self.assertEqual(str(Foo8("foo")), "foofoo") | |
| self.assertEqual(str(Foo9("foo")), "string") | |
| self.assertEqual(unicode(Foo9("foo")), u"not unicode") | |
| def test_expandtabs_overflows_gracefully(self): | |
| # This test only affects 32-bit platforms because expandtabs can only take | |
| # an int as the max value, not a 64-bit C long. If expandtabs is changed | |
| # to take a 64-bit long, this test should apply to all platforms. | |
| if sys.maxint > (1 << 32) or struct.calcsize('P') != 4: | |
| return | |
| self.assertRaises(OverflowError, 't\tt\t'.expandtabs, sys.maxint) | |
| def test__format__(self): | |
| def test(value, format, expected): | |
| # test both with and without the trailing 's' | |
| self.assertEqual(value.__format__(format), expected) | |
| self.assertEqual(value.__format__(format + 's'), expected) | |
| test('', '', '') | |
| test('abc', '', 'abc') | |
| test('abc', '.3', 'abc') | |
| test('ab', '.3', 'ab') | |
| test('abcdef', '.3', 'abc') | |
| test('abcdef', '.0', '') | |
| test('abc', '3.3', 'abc') | |
| test('abc', '2.3', 'abc') | |
| test('abc', '2.2', 'ab') | |
| test('abc', '3.2', 'ab ') | |
| test('result', 'x<0', 'result') | |
| test('result', 'x<5', 'result') | |
| test('result', 'x<6', 'result') | |
| test('result', 'x<7', 'resultx') | |
| test('result', 'x<8', 'resultxx') | |
| test('result', ' <7', 'result ') | |
| test('result', '<7', 'result ') | |
| test('result', '>7', ' result') | |
| test('result', '>8', ' result') | |
| test('result', '^8', ' result ') | |
| test('result', '^9', ' result ') | |
| test('result', '^10', ' result ') | |
| test('a', '10000', 'a' + ' ' * 9999) | |
| test('', '10000', ' ' * 10000) | |
| test('', '10000000', ' ' * 10000000) | |
| def test_format(self): | |
| self.assertEqual(''.format(), '') | |
| self.assertEqual('a'.format(), 'a') | |
| self.assertEqual('ab'.format(), 'ab') | |
| self.assertEqual('a{{'.format(), 'a{') | |
| self.assertEqual('a}}'.format(), 'a}') | |
| self.assertEqual('{{b'.format(), '{b') | |
| self.assertEqual('}}b'.format(), '}b') | |
| self.assertEqual('a{{b'.format(), 'a{b') | |
| # examples from the PEP: | |
| import datetime | |
| self.assertEqual("My name is {0}".format('Fred'), "My name is Fred") | |
| self.assertEqual("My name is {0[name]}".format(dict(name='Fred')), | |
| "My name is Fred") | |
| self.assertEqual("My name is {0} :-{{}}".format('Fred'), | |
| "My name is Fred :-{}") | |
| d = datetime.date(2007, 8, 18) | |
| self.assertEqual("The year is {0.year}".format(d), | |
| "The year is 2007") | |
| # classes we'll use for testing | |
| class C: | |
| def __init__(self, x=100): | |
| self._x = x | |
| def __format__(self, spec): | |
| return spec | |
| class D: | |
| def __init__(self, x): | |
| self.x = x | |
| def __format__(self, spec): | |
| return str(self.x) | |
| # class with __str__, but no __format__ | |
| class E: | |
| def __init__(self, x): | |
| self.x = x | |
| def __str__(self): | |
| return 'E(' + self.x + ')' | |
| # class with __repr__, but no __format__ or __str__ | |
| class F: | |
| def __init__(self, x): | |
| self.x = x | |
| def __repr__(self): | |
| return 'F(' + self.x + ')' | |
| # class with __format__ that forwards to string, for some format_spec's | |
| class G: | |
| def __init__(self, x): | |
| self.x = x | |
| def __str__(self): | |
| return "string is " + self.x | |
| def __format__(self, format_spec): | |
| if format_spec == 'd': | |
| return 'G(' + self.x + ')' | |
| return object.__format__(self, format_spec) | |
| # class that returns a bad type from __format__ | |
| class H: | |
| def __format__(self, format_spec): | |
| return 1.0 | |
| class I(datetime.date): | |
| def __format__(self, format_spec): | |
| return self.strftime(format_spec) | |
| class J(int): | |
| def __format__(self, format_spec): | |
| return int.__format__(self * 2, format_spec) | |
| self.assertEqual(''.format(), '') | |
| self.assertEqual('abc'.format(), 'abc') | |
| self.assertEqual('{0}'.format('abc'), 'abc') | |
| self.assertEqual('{0:}'.format('abc'), 'abc') | |
| self.assertEqual('X{0}'.format('abc'), 'Xabc') | |
| self.assertEqual('{0}X'.format('abc'), 'abcX') | |
| self.assertEqual('X{0}Y'.format('abc'), 'XabcY') | |
| self.assertEqual('{1}'.format(1, 'abc'), 'abc') | |
| self.assertEqual('X{1}'.format(1, 'abc'), 'Xabc') | |
| self.assertEqual('{1}X'.format(1, 'abc'), 'abcX') | |
| self.assertEqual('X{1}Y'.format(1, 'abc'), 'XabcY') | |
| self.assertEqual('{0}'.format(-15), '-15') | |
| self.assertEqual('{0}{1}'.format(-15, 'abc'), '-15abc') | |
| self.assertEqual('{0}X{1}'.format(-15, 'abc'), '-15Xabc') | |
| self.assertEqual('{{'.format(), '{') | |
| self.assertEqual('}}'.format(), '}') | |
| self.assertEqual('{{}}'.format(), '{}') | |
| self.assertEqual('{{x}}'.format(), '{x}') | |
| self.assertEqual('{{{0}}}'.format(123), '{123}') | |
| self.assertEqual('{{{{0}}}}'.format(), '{{0}}') | |
| self.assertEqual('}}{{'.format(), '}{') | |
| self.assertEqual('}}x{{'.format(), '}x{') | |
| # weird field names | |
| self.assertEqual("{0[foo-bar]}".format({'foo-bar':'baz'}), 'baz') | |
| self.assertEqual("{0[foo bar]}".format({'foo bar':'baz'}), 'baz') | |
| self.assertEqual("{0[ ]}".format({' ':3}), '3') | |
| self.assertEqual('{foo._x}'.format(foo=C(20)), '20') | |
| self.assertEqual('{1}{0}'.format(D(10), D(20)), '2010') | |
| self.assertEqual('{0._x.x}'.format(C(D('abc'))), 'abc') | |
| self.assertEqual('{0[0]}'.format(['abc', 'def']), 'abc') | |
| self.assertEqual('{0[1]}'.format(['abc', 'def']), 'def') | |
| self.assertEqual('{0[1][0]}'.format(['abc', ['def']]), 'def') | |
| self.assertEqual('{0[1][0].x}'.format(['abc', [D('def')]]), 'def') | |
| # strings | |
| self.assertEqual('{0:.3s}'.format('abc'), 'abc') | |
| self.assertEqual('{0:.3s}'.format('ab'), 'ab') | |
| self.assertEqual('{0:.3s}'.format('abcdef'), 'abc') | |
| self.assertEqual('{0:.0s}'.format('abcdef'), '') | |
| self.assertEqual('{0:3.3s}'.format('abc'), 'abc') | |
| self.assertEqual('{0:2.3s}'.format('abc'), 'abc') | |
| self.assertEqual('{0:2.2s}'.format('abc'), 'ab') | |
| self.assertEqual('{0:3.2s}'.format('abc'), 'ab ') | |
| self.assertEqual('{0:x<0s}'.format('result'), 'result') | |
| self.assertEqual('{0:x<5s}'.format('result'), 'result') | |
| self.assertEqual('{0:x<6s}'.format('result'), 'result') | |
| self.assertEqual('{0:x<7s}'.format('result'), 'resultx') | |
| self.assertEqual('{0:x<8s}'.format('result'), 'resultxx') | |
| self.assertEqual('{0: <7s}'.format('result'), 'result ') | |
| self.assertEqual('{0:<7s}'.format('result'), 'result ') | |
| self.assertEqual('{0:>7s}'.format('result'), ' result') | |
| self.assertEqual('{0:>8s}'.format('result'), ' result') | |
| self.assertEqual('{0:^8s}'.format('result'), ' result ') | |
| self.assertEqual('{0:^9s}'.format('result'), ' result ') | |
| self.assertEqual('{0:^10s}'.format('result'), ' result ') | |
| self.assertEqual('{0:10000}'.format('a'), 'a' + ' ' * 9999) | |
| self.assertEqual('{0:10000}'.format(''), ' ' * 10000) | |
| self.assertEqual('{0:10000000}'.format(''), ' ' * 10000000) | |
| # format specifiers for user defined type | |
| self.assertEqual('{0:abc}'.format(C()), 'abc') | |
| # !r and !s coercions | |
| self.assertEqual('{0!s}'.format('Hello'), 'Hello') | |
| self.assertEqual('{0!s:}'.format('Hello'), 'Hello') | |
| self.assertEqual('{0!s:15}'.format('Hello'), 'Hello ') | |
| self.assertEqual('{0!s:15s}'.format('Hello'), 'Hello ') | |
| self.assertEqual('{0!r}'.format('Hello'), "'Hello'") | |
| self.assertEqual('{0!r:}'.format('Hello'), "'Hello'") | |
| self.assertEqual('{0!r}'.format(F('Hello')), 'F(Hello)') | |
| # test fallback to object.__format__ | |
| self.assertEqual('{0}'.format({}), '{}') | |
| self.assertEqual('{0}'.format([]), '[]') | |
| self.assertEqual('{0}'.format([1]), '[1]') | |
| self.assertEqual('{0}'.format(E('data')), 'E(data)') | |
| self.assertEqual('{0:d}'.format(G('data')), 'G(data)') | |
| self.assertEqual('{0!s}'.format(G('data')), 'string is data') | |
| msg = 'object.__format__ with a non-empty format string is deprecated' | |
| with test_support.check_warnings((msg, PendingDeprecationWarning)): | |
| self.assertEqual('{0:^10}'.format(E('data')), ' E(data) ') | |
| self.assertEqual('{0:^10s}'.format(E('data')), ' E(data) ') | |
| self.assertEqual('{0:>15s}'.format(G('data')), ' string is data') | |
| self.assertEqual("{0:date: %Y-%m-%d}".format(I(year=2007, | |
| month=8, | |
| day=27)), | |
| "date: 2007-08-27") | |
| # test deriving from a builtin type and overriding __format__ | |
| self.assertEqual("{0}".format(J(10)), "20") | |
| # string format specifiers | |
| self.assertEqual('{0:}'.format('a'), 'a') | |
| # computed format specifiers | |
| self.assertEqual("{0:.{1}}".format('hello world', 5), 'hello') | |
| self.assertEqual("{0:.{1}s}".format('hello world', 5), 'hello') | |
| self.assertEqual("{0:.{precision}s}".format('hello world', precision=5), 'hello') | |
| self.assertEqual("{0:{width}.{precision}s}".format('hello world', width=10, precision=5), 'hello ') | |
| self.assertEqual("{0:{width}.{precision}s}".format('hello world', width='10', precision='5'), 'hello ') | |
| # test various errors | |
| self.assertRaises(ValueError, '{'.format) | |
| self.assertRaises(ValueError, '}'.format) | |
| self.assertRaises(ValueError, 'a{'.format) | |
| self.assertRaises(ValueError, 'a}'.format) | |
| self.assertRaises(ValueError, '{a'.format) | |
| self.assertRaises(ValueError, '}a'.format) | |
| self.assertRaises(IndexError, '{0}'.format) | |
| self.assertRaises(IndexError, '{1}'.format, 'abc') | |
| self.assertRaises(KeyError, '{x}'.format) | |
| self.assertRaises(ValueError, "}{".format) | |
| self.assertRaises(ValueError, "{".format) | |
| self.assertRaises(ValueError, "}".format) | |
| self.assertRaises(ValueError, "abc{0:{}".format) | |
| self.assertRaises(ValueError, "{0".format) | |
| self.assertRaises(IndexError, "{0.}".format) | |
| self.assertRaises(ValueError, "{0.}".format, 0) | |
| self.assertRaises(IndexError, "{0[}".format) | |
| self.assertRaises(ValueError, "{0[}".format, []) | |
| self.assertRaises(KeyError, "{0]}".format) | |
| self.assertRaises(ValueError, "{0.[]}".format, 0) | |
| self.assertRaises(ValueError, "{0..foo}".format, 0) | |
| self.assertRaises(ValueError, "{0[0}".format, 0) | |
| self.assertRaises(ValueError, "{0[0:foo}".format, 0) | |
| self.assertRaises(KeyError, "{c]}".format) | |
| self.assertRaises(ValueError, "{{ {{{0}}".format, 0) | |
| self.assertRaises(ValueError, "{0}}".format, 0) | |
| self.assertRaises(KeyError, "{foo}".format, bar=3) | |
| self.assertRaises(ValueError, "{0!x}".format, 3) | |
| self.assertRaises(ValueError, "{0!}".format, 0) | |
| self.assertRaises(ValueError, "{0!rs}".format, 0) | |
| self.assertRaises(ValueError, "{!}".format) | |
| self.assertRaises(IndexError, "{:}".format) | |
| self.assertRaises(IndexError, "{:s}".format) | |
| self.assertRaises(IndexError, "{}".format) | |
| # issue 6089 | |
| self.assertRaises(ValueError, "{0[0]x}".format, [None]) | |
| self.assertRaises(ValueError, "{0[0](10)}".format, [None]) | |
| # can't have a replacement on the field name portion | |
| self.assertRaises(TypeError, '{0[{1}]}'.format, 'abcdefg', 4) | |
| # exceed maximum recursion depth | |
| self.assertRaises(ValueError, "{0:{1:{2}}}".format, 'abc', 's', '') | |
| self.assertRaises(ValueError, "{0:{1:{2:{3:{4:{5:{6}}}}}}}".format, | |
| 0, 1, 2, 3, 4, 5, 6, 7) | |
| # string format spec errors | |
| self.assertRaises(ValueError, "{0:-s}".format, '') | |
| self.assertRaises(ValueError, format, "", "-") | |
| self.assertRaises(ValueError, "{0:=s}".format, '') | |
| def test_format_auto_numbering(self): | |
| class C: | |
| def __init__(self, x=100): | |
| self._x = x | |
| def __format__(self, spec): | |
| return spec | |
| self.assertEqual('{}'.format(10), '10') | |
| self.assertEqual('{:5}'.format('s'), 's ') | |
| self.assertEqual('{!r}'.format('s'), "'s'") | |
| self.assertEqual('{._x}'.format(C(10)), '10') | |
| self.assertEqual('{[1]}'.format([1, 2]), '2') | |
| self.assertEqual('{[a]}'.format({'a':4, 'b':2}), '4') | |
| self.assertEqual('a{}b{}c'.format(0, 1), 'a0b1c') | |
| self.assertEqual('a{:{}}b'.format('x', '^10'), 'a x b') | |
| self.assertEqual('a{:{}x}b'.format(20, '#'), 'a0x14b') | |
| # can't mix and match numbering and auto-numbering | |
| self.assertRaises(ValueError, '{}{1}'.format, 1, 2) | |
| self.assertRaises(ValueError, '{1}{}'.format, 1, 2) | |
| self.assertRaises(ValueError, '{:{1}}'.format, 1, 2) | |
| self.assertRaises(ValueError, '{0:{}}'.format, 1, 2) | |
| # can mix and match auto-numbering and named | |
| self.assertEqual('{f}{}'.format(4, f='test'), 'test4') | |
| self.assertEqual('{}{f}'.format(4, f='test'), '4test') | |
| self.assertEqual('{:{f}}{g}{}'.format(1, 3, g='g', f=2), ' 1g3') | |
| self.assertEqual('{f:{}}{}{g}'.format(2, 4, f=1, g='g'), ' 14g') | |
| def test_buffer_is_readonly(self): | |
| self.assertRaises(TypeError, sys.stdin.readinto, b"") | |
| def test_encode_and_decode_kwargs(self): | |
| self.assertEqual('abcde'.encode('ascii', 'replace'), | |
| 'abcde'.encode('ascii', errors='replace')) | |
| self.assertEqual('abcde'.encode('ascii', 'ignore'), | |
| 'abcde'.encode(encoding='ascii', errors='ignore')) | |
| self.assertEqual('Andr\202 x'.decode('ascii', 'ignore'), | |
| 'Andr\202 x'.decode('ascii', errors='ignore')) | |
| self.assertEqual('Andr\202 x'.decode('ascii', 'replace'), | |
| 'Andr\202 x'.decode(encoding='ascii', errors='replace')) | |
| def test_startswith_endswith_errors(self): | |
| with self.assertRaises(UnicodeDecodeError): | |
| '\xff'.startswith(u'x') | |
| with self.assertRaises(UnicodeDecodeError): | |
| '\xff'.endswith(u'x') | |
| for meth in ('foo'.startswith, 'foo'.endswith): | |
| with self.assertRaises(TypeError) as cm: | |
| meth(['f']) | |
| exc = str(cm.exception) | |
| self.assertIn('unicode', exc) | |
| self.assertIn('str', exc) | |
| self.assertIn('tuple', exc) | |
| def test_main(): | |
| test_support.run_unittest(StrTest) | |
| if __name__ == "__main__": | |
| test_main() |