| import unittest |
| import struct |
| import sys |
| from test import test_support, string_tests |
| |
| |
| class StrSubclass(str): |
| pass |
| |
| 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) |
| |
| @test_support.cpython_only |
| def test_formatting_huge_precision(self): |
| from _testcapi import INT_MAX |
| format_string = "%.{}f".format(INT_MAX + 1) |
| with self.assertRaises(ValueError): |
| result = format_string % 2.34 |
| |
| def test_formatting_huge_width(self): |
| format_string = "%{}f".format(sys.maxsize + 1) |
| with self.assertRaises(ValueError): |
| result = format_string % 2.34 |
| |
| 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.assertIs(type(str(Foo8("foo"))), Foo8) |
| self.assertEqual(StrSubclass(Foo8("foo")), "foofoo") |
| self.assertIs(type(StrSubclass(Foo8("foo"))), StrSubclass) |
| self.assertEqual(str(Foo9("foo")), "string") |
| self.assertEqual(unicode(Foo9("foo")), u"not unicode") |
| |
| # 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. |
| @unittest.skipIf(sys.maxint > (1 << 32) or struct.calcsize('P') != 4, |
| 'only applies to 32-bit platforms') |
| def test_expandtabs_overflows_gracefully(self): |
| 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_huge_precision(self): |
| format_string = ".{}f".format(sys.maxsize + 1) |
| with self.assertRaises(ValueError): |
| result = format(2.34, format_string) |
| |
| def test_format_huge_width(self): |
| format_string = "{}f".format(sys.maxsize + 1) |
| with self.assertRaises(ValueError): |
| result = format(2.34, format_string) |
| |
| def test_format_huge_item_number(self): |
| format_string = "{{{}:.6f}}".format(sys.maxsize + 1) |
| with self.assertRaises(ValueError): |
| result = format_string.format(2.34) |
| |
| 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_format_c_overflow(self): |
| # issue #7267 |
| self.assertRaises(OverflowError, '{0:c}'.format, -1) |
| self.assertRaises(OverflowError, '{0:c}'.format, 256) |
| |
| 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() |
