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-rw-r--r--Lib/test/test_reprlib.py405
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diff --git a/Lib/test/test_reprlib.py b/Lib/test/test_reprlib.py
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-"""
- Test cases for the repr module
- Nick Mathewson
-"""
-
-import sys
-import os
-import shutil
-import importlib
-import importlib.util
-import unittest
-
-from test.support import create_empty_file, verbose
-from reprlib import repr as r # Don't shadow builtin repr
-from reprlib import Repr
-from reprlib import recursive_repr
-
-
-def nestedTuple(nesting):
- t = ()
- for i in range(nesting):
- t = (t,)
- return t
-
-class ReprTests(unittest.TestCase):
-
- def test_string(self):
- eq = self.assertEqual
- eq(r("abc"), "'abc'")
- eq(r("abcdefghijklmnop"),"'abcdefghijklmnop'")
-
- s = "a"*30+"b"*30
- expected = repr(s)[:13] + "..." + repr(s)[-14:]
- eq(r(s), expected)
-
- eq(r("\"'"), repr("\"'"))
- s = "\""*30+"'"*100
- expected = repr(s)[:13] + "..." + repr(s)[-14:]
- eq(r(s), expected)
-
- def test_tuple(self):
- eq = self.assertEqual
- eq(r((1,)), "(1,)")
-
- t3 = (1, 2, 3)
- eq(r(t3), "(1, 2, 3)")
-
- r2 = Repr()
- r2.maxtuple = 2
- expected = repr(t3)[:-2] + "...)"
- eq(r2.repr(t3), expected)
-
- def test_container(self):
- from array import array
- from collections import deque
-
- eq = self.assertEqual
- # Tuples give up after 6 elements
- eq(r(()), "()")
- eq(r((1,)), "(1,)")
- eq(r((1, 2, 3)), "(1, 2, 3)")
- eq(r((1, 2, 3, 4, 5, 6)), "(1, 2, 3, 4, 5, 6)")
- eq(r((1, 2, 3, 4, 5, 6, 7)), "(1, 2, 3, 4, 5, 6, ...)")
-
- # Lists give up after 6 as well
- eq(r([]), "[]")
- eq(r([1]), "[1]")
- eq(r([1, 2, 3]), "[1, 2, 3]")
- eq(r([1, 2, 3, 4, 5, 6]), "[1, 2, 3, 4, 5, 6]")
- eq(r([1, 2, 3, 4, 5, 6, 7]), "[1, 2, 3, 4, 5, 6, ...]")
-
- # Sets give up after 6 as well
- eq(r(set([])), "set()")
- eq(r(set([1])), "{1}")
- eq(r(set([1, 2, 3])), "{1, 2, 3}")
- eq(r(set([1, 2, 3, 4, 5, 6])), "{1, 2, 3, 4, 5, 6}")
- eq(r(set([1, 2, 3, 4, 5, 6, 7])), "{1, 2, 3, 4, 5, 6, ...}")
-
- # Frozensets give up after 6 as well
- eq(r(frozenset([])), "frozenset()")
- eq(r(frozenset([1])), "frozenset({1})")
- eq(r(frozenset([1, 2, 3])), "frozenset({1, 2, 3})")
- eq(r(frozenset([1, 2, 3, 4, 5, 6])), "frozenset({1, 2, 3, 4, 5, 6})")
- eq(r(frozenset([1, 2, 3, 4, 5, 6, 7])), "frozenset({1, 2, 3, 4, 5, 6, ...})")
-
- # collections.deque after 6
- eq(r(deque([1, 2, 3, 4, 5, 6, 7])), "deque([1, 2, 3, 4, 5, 6, ...])")
-
- # Dictionaries give up after 4.
- eq(r({}), "{}")
- d = {'alice': 1, 'bob': 2, 'charles': 3, 'dave': 4}
- eq(r(d), "{'alice': 1, 'bob': 2, 'charles': 3, 'dave': 4}")
- d['arthur'] = 1
- eq(r(d), "{'alice': 1, 'arthur': 1, 'bob': 2, 'charles': 3, ...}")
-
- # array.array after 5.
- eq(r(array('i')), "array('i')")
- eq(r(array('i', [1])), "array('i', [1])")
- eq(r(array('i', [1, 2])), "array('i', [1, 2])")
- eq(r(array('i', [1, 2, 3])), "array('i', [1, 2, 3])")
- eq(r(array('i', [1, 2, 3, 4])), "array('i', [1, 2, 3, 4])")
- eq(r(array('i', [1, 2, 3, 4, 5])), "array('i', [1, 2, 3, 4, 5])")
- eq(r(array('i', [1, 2, 3, 4, 5, 6])),
- "array('i', [1, 2, 3, 4, 5, ...])")
-
- def test_set_literal(self):
- eq = self.assertEqual
- eq(r({1}), "{1}")
- eq(r({1, 2, 3}), "{1, 2, 3}")
- eq(r({1, 2, 3, 4, 5, 6}), "{1, 2, 3, 4, 5, 6}")
- eq(r({1, 2, 3, 4, 5, 6, 7}), "{1, 2, 3, 4, 5, 6, ...}")
-
- def test_frozenset(self):
- eq = self.assertEqual
- eq(r(frozenset({1})), "frozenset({1})")
- eq(r(frozenset({1, 2, 3})), "frozenset({1, 2, 3})")
- eq(r(frozenset({1, 2, 3, 4, 5, 6})), "frozenset({1, 2, 3, 4, 5, 6})")
- eq(r(frozenset({1, 2, 3, 4, 5, 6, 7})), "frozenset({1, 2, 3, 4, 5, 6, ...})")
-
- def test_numbers(self):
- eq = self.assertEqual
- eq(r(123), repr(123))
- eq(r(123), repr(123))
- eq(r(1.0/3), repr(1.0/3))
-
- n = 10**100
- expected = repr(n)[:18] + "..." + repr(n)[-19:]
- eq(r(n), expected)
-
- def test_instance(self):
- eq = self.assertEqual
- i1 = ClassWithRepr("a")
- eq(r(i1), repr(i1))
-
- i2 = ClassWithRepr("x"*1000)
- expected = repr(i2)[:13] + "..." + repr(i2)[-14:]
- eq(r(i2), expected)
-
- i3 = ClassWithFailingRepr()
- eq(r(i3), ("<ClassWithFailingRepr instance at %#x>"%id(i3)))
-
- s = r(ClassWithFailingRepr)
- self.assertTrue(s.startswith("<class "))
- self.assertTrue(s.endswith(">"))
- self.assertIn(s.find("..."), [12, 13])
-
- def test_lambda(self):
- r = repr(lambda x: x)
- self.assertTrue(r.startswith("<function ReprTests.test_lambda.<locals>.<lambda"), r)
- # XXX anonymous functions? see func_repr
-
- def test_builtin_function(self):
- eq = self.assertEqual
- # Functions
- eq(repr(hash), '<built-in function hash>')
- # Methods
- self.assertTrue(repr(''.split).startswith(
- '<built-in method split of str object at 0x'))
-
- def test_range(self):
- eq = self.assertEqual
- eq(repr(range(1)), 'range(0, 1)')
- eq(repr(range(1, 2)), 'range(1, 2)')
- eq(repr(range(1, 4, 3)), 'range(1, 4, 3)')
-
- def test_nesting(self):
- eq = self.assertEqual
- # everything is meant to give up after 6 levels.
- eq(r([[[[[[[]]]]]]]), "[[[[[[[]]]]]]]")
- eq(r([[[[[[[[]]]]]]]]), "[[[[[[[...]]]]]]]")
-
- eq(r(nestedTuple(6)), "(((((((),),),),),),)")
- eq(r(nestedTuple(7)), "(((((((...),),),),),),)")
-
- eq(r({ nestedTuple(5) : nestedTuple(5) }),
- "{((((((),),),),),): ((((((),),),),),)}")
- eq(r({ nestedTuple(6) : nestedTuple(6) }),
- "{((((((...),),),),),): ((((((...),),),),),)}")
-
- eq(r([[[[[[{}]]]]]]), "[[[[[[{}]]]]]]")
- eq(r([[[[[[[{}]]]]]]]), "[[[[[[[...]]]]]]]")
-
- def test_cell(self):
- def get_cell():
- x = 42
- def inner():
- return x
- return inner
- x = get_cell().__closure__[0]
- self.assertRegex(repr(x), r'<cell at 0x[0-9A-Fa-f]+: '
- r'int object at 0x[0-9A-Fa-f]+>')
- self.assertRegex(r(x), r'<cell at 0x.*\.\.\..*>')
-
- def test_descriptors(self):
- eq = self.assertEqual
- # method descriptors
- eq(repr(dict.items), "<method 'items' of 'dict' objects>")
- # XXX member descriptors
- # XXX attribute descriptors
- # XXX slot descriptors
- # static and class methods
- class C:
- def foo(cls): pass
- x = staticmethod(C.foo)
- self.assertTrue(repr(x).startswith('<staticmethod object at 0x'))
- x = classmethod(C.foo)
- self.assertTrue(repr(x).startswith('<classmethod object at 0x'))
-
- def test_unsortable(self):
- # Repr.repr() used to call sorted() on sets, frozensets and dicts
- # without taking into account that not all objects are comparable
- x = set([1j, 2j, 3j])
- y = frozenset(x)
- z = {1j: 1, 2j: 2}
- r(x)
- r(y)
- r(z)
-
-def write_file(path, text):
- with open(path, 'w', encoding='ASCII') as fp:
- fp.write(text)
-
-class LongReprTest(unittest.TestCase):
- longname = 'areallylongpackageandmodulenametotestreprtruncation'
-
- def setUp(self):
- self.pkgname = os.path.join(self.longname)
- self.subpkgname = os.path.join(self.longname, self.longname)
- # Make the package and subpackage
- shutil.rmtree(self.pkgname, ignore_errors=True)
- os.mkdir(self.pkgname)
- create_empty_file(os.path.join(self.pkgname, '__init__.py'))
- shutil.rmtree(self.subpkgname, ignore_errors=True)
- os.mkdir(self.subpkgname)
- create_empty_file(os.path.join(self.subpkgname, '__init__.py'))
- # Remember where we are
- self.here = os.getcwd()
- sys.path.insert(0, self.here)
- # When regrtest is run with its -j option, this command alone is not
- # enough.
- importlib.invalidate_caches()
-
- def tearDown(self):
- actions = []
- for dirpath, dirnames, filenames in os.walk(self.pkgname):
- for name in dirnames + filenames:
- actions.append(os.path.join(dirpath, name))
- actions.append(self.pkgname)
- actions.sort()
- actions.reverse()
- for p in actions:
- if os.path.isdir(p):
- os.rmdir(p)
- else:
- os.remove(p)
- del sys.path[0]
-
- def _check_path_limitations(self, module_name):
- # base directory
- source_path_len = len(self.here)
- # a path separator + `longname` (twice)
- source_path_len += 2 * (len(self.longname) + 1)
- # a path separator + `module_name` + ".py"
- source_path_len += len(module_name) + 1 + len(".py")
- cached_path_len = (source_path_len +
- len(importlib.util.cache_from_source("x.py")) - len("x.py"))
- if os.name == 'nt' and cached_path_len >= 258:
- # Under Windows, the max path len is 260 including C's terminating
- # NUL character.
- # (see http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx#maxpath)
- self.skipTest("test paths too long (%d characters) for Windows' 260 character limit"
- % cached_path_len)
- elif os.name == 'nt' and verbose:
- print("cached_path_len =", cached_path_len)
-
- def test_module(self):
- self.maxDiff = None
- self._check_path_limitations(self.pkgname)
- create_empty_file(os.path.join(self.subpkgname, self.pkgname + '.py'))
- importlib.invalidate_caches()
- from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import areallylongpackageandmodulenametotestreprtruncation
- module = areallylongpackageandmodulenametotestreprtruncation
- self.assertEqual(repr(module), "<module %r from %r>" % (module.__name__, module.__file__))
- self.assertEqual(repr(sys), "<module 'sys' (built-in)>")
-
- def test_type(self):
- self._check_path_limitations('foo')
- eq = self.assertEqual
- write_file(os.path.join(self.subpkgname, 'foo.py'), '''\
-class foo(object):
- pass
-''')
- importlib.invalidate_caches()
- from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import foo
- eq(repr(foo.foo),
- "<class '%s.foo'>" % foo.__name__)
-
- @unittest.skip('need a suitable object')
- def test_object(self):
- # XXX Test the repr of a type with a really long tp_name but with no
- # tp_repr. WIBNI we had ::Inline? :)
- pass
-
- def test_class(self):
- self._check_path_limitations('bar')
- write_file(os.path.join(self.subpkgname, 'bar.py'), '''\
-class bar:
- pass
-''')
- importlib.invalidate_caches()
- from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import bar
- # Module name may be prefixed with "test.", depending on how run.
- self.assertEqual(repr(bar.bar), "<class '%s.bar'>" % bar.__name__)
-
- def test_instance(self):
- self._check_path_limitations('baz')
- write_file(os.path.join(self.subpkgname, 'baz.py'), '''\
-class baz:
- pass
-''')
- importlib.invalidate_caches()
- from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import baz
- ibaz = baz.baz()
- self.assertTrue(repr(ibaz).startswith(
- "<%s.baz object at 0x" % baz.__name__))
-
- def test_method(self):
- self._check_path_limitations('qux')
- eq = self.assertEqual
- write_file(os.path.join(self.subpkgname, 'qux.py'), '''\
-class aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:
- def amethod(self): pass
-''')
- importlib.invalidate_caches()
- from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import qux
- # Unbound methods first
- r = repr(qux.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.amethod)
- self.assertTrue(r.startswith('<function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.amethod'), r)
- # Bound method next
- iqux = qux.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()
- r = repr(iqux.amethod)
- self.assertTrue(r.startswith(
- '<bound method aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.amethod of <%s.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa object at 0x' \
- % (qux.__name__,) ), r)
-
- @unittest.skip('needs a built-in function with a really long name')
- def test_builtin_function(self):
- # XXX test built-in functions and methods with really long names
- pass
-
-class ClassWithRepr:
- def __init__(self, s):
- self.s = s
- def __repr__(self):
- return "ClassWithRepr(%r)" % self.s
-
-
-class ClassWithFailingRepr:
- def __repr__(self):
- raise Exception("This should be caught by Repr.repr_instance")
-
-class MyContainer:
- 'Helper class for TestRecursiveRepr'
- def __init__(self, values):
- self.values = list(values)
- def append(self, value):
- self.values.append(value)
- @recursive_repr()
- def __repr__(self):
- return '<' + ', '.join(map(str, self.values)) + '>'
-
-class MyContainer2(MyContainer):
- @recursive_repr('+++')
- def __repr__(self):
- return '<' + ', '.join(map(str, self.values)) + '>'
-
-class MyContainer3:
- def __repr__(self):
- 'Test document content'
- pass
- wrapped = __repr__
- wrapper = recursive_repr()(wrapped)
-
-class TestRecursiveRepr(unittest.TestCase):
- def test_recursive_repr(self):
- m = MyContainer(list('abcde'))
- m.append(m)
- m.append('x')
- m.append(m)
- self.assertEqual(repr(m), '<a, b, c, d, e, ..., x, ...>')
- m = MyContainer2(list('abcde'))
- m.append(m)
- m.append('x')
- m.append(m)
- self.assertEqual(repr(m), '<a, b, c, d, e, +++, x, +++>')
-
- def test_assigned_attributes(self):
- from functools import WRAPPER_ASSIGNMENTS as assigned
- wrapped = MyContainer3.wrapped
- wrapper = MyContainer3.wrapper
- for name in assigned:
- self.assertIs(getattr(wrapper, name), getattr(wrapped, name))
-
-if __name__ == "__main__":
- unittest.main()