diff options
Diffstat (limited to 'Lib/test/test_builtin.py')
| -rw-r--r-- | Lib/test/test_builtin.py | 159 |
1 files changed, 140 insertions, 19 deletions
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py index f4d3400..c342a43 100644 --- a/Lib/test/test_builtin.py +++ b/Lib/test/test_builtin.py @@ -1,19 +1,21 @@ # Python test set -- built-in functions -import platform -import unittest -import sys -import warnings +import ast +import builtins import collections import io +import locale import os -import ast -import types -import builtins +import pickle +import platform import random +import sys import traceback -from test.support import fcmp, TESTFN, unlink, run_unittest, check_warnings +import types +import unittest +import warnings from operator import neg +from test.support import TESTFN, unlink, run_unittest, check_warnings try: import pty, signal except ImportError: @@ -110,7 +112,30 @@ class TestFailingIter: def __iter__(self): raise RuntimeError +def filter_char(arg): + return ord(arg) > ord("d") + +def map_char(arg): + return chr(ord(arg)+1) + class BuiltinTest(unittest.TestCase): + # Helper to check picklability + def check_iter_pickle(self, it, seq): + itorg = it + d = pickle.dumps(it) + it = pickle.loads(d) + self.assertEqual(type(itorg), type(it)) + self.assertEqual(list(it), seq) + + #test the iterator after dropping one from it + it = pickle.loads(d) + try: + next(it) + except StopIteration: + return + d = pickle.dumps(it) + it = pickle.loads(d) + self.assertEqual(list(it), seq[1:]) def test_import(self): __import__('sys') @@ -257,8 +282,7 @@ class BuiltinTest(unittest.TestCase): self.assertEqual(chr(0xff), '\xff') self.assertRaises(ValueError, chr, 1<<24) self.assertEqual(chr(sys.maxunicode), - str(('\\U%08x' % (sys.maxunicode)).encode("ascii"), - 'unicode-escape')) + str('\\U0010ffff'.encode("ascii"), 'unicode-escape')) self.assertRaises(TypeError, chr) self.assertEqual(chr(0x0000FFFF), "\U0000FFFF") self.assertEqual(chr(0x00010000), "\U00010000") @@ -380,7 +404,15 @@ class BuiltinTest(unittest.TestCase): f = Foo() self.assertTrue(dir(f) == ["ga", "kan", "roo"]) - # dir(obj__dir__not_list) + # dir(obj__dir__tuple) + class Foo(object): + def __dir__(self): + return ("b", "c", "a") + res = dir(Foo()) + self.assertIsInstance(res, list) + self.assertTrue(res == ["a", "b", "c"]) + + # dir(obj__dir__not_sequence) class Foo(object): def __dir__(self): return 7 @@ -393,6 +425,8 @@ class BuiltinTest(unittest.TestCase): except: self.assertEqual(len(dir(sys.exc_info()[2])), 4) + # test that object has a __dir__() + self.assertEqual(sorted([].__dir__()), dir([])) def test_divmod(self): self.assertEqual(divmod(12, 7), (1, 5)) @@ -402,10 +436,13 @@ class BuiltinTest(unittest.TestCase): self.assertEqual(divmod(-sys.maxsize-1, -1), (sys.maxsize+1, 0)) - self.assertTrue(not fcmp(divmod(3.25, 1.0), (3.0, 0.25))) - self.assertTrue(not fcmp(divmod(-3.25, 1.0), (-4.0, 0.75))) - self.assertTrue(not fcmp(divmod(3.25, -1.0), (-4.0, -0.75))) - self.assertTrue(not fcmp(divmod(-3.25, -1.0), (3.0, -0.25))) + for num, denom, exp_result in [ (3.25, 1.0, (3.0, 0.25)), + (-3.25, 1.0, (-4.0, 0.75)), + (3.25, -1.0, (-4.0, -0.75)), + (-3.25, -1.0, (3.0, -0.25))]: + result = divmod(num, denom) + self.assertAlmostEqual(result[0], exp_result[0]) + self.assertAlmostEqual(result[1], exp_result[1]) self.assertRaises(TypeError, divmod) @@ -520,6 +557,39 @@ class BuiltinTest(unittest.TestCase): del l['__builtins__'] self.assertEqual((g, l), ({'a': 1}, {'b': 2})) + def test_exec_globals(self): + code = compile("print('Hello World!')", "", "exec") + # no builtin function + self.assertRaisesRegex(NameError, "name 'print' is not defined", + exec, code, {'__builtins__': {}}) + # __builtins__ must be a mapping type + self.assertRaises(TypeError, + exec, code, {'__builtins__': 123}) + + # no __build_class__ function + code = compile("class A: pass", "", "exec") + self.assertRaisesRegex(NameError, "__build_class__ not found", + exec, code, {'__builtins__': {}}) + + class frozendict_error(Exception): + pass + + class frozendict(dict): + def __setitem__(self, key, value): + raise frozendict_error("frozendict is readonly") + + # read-only builtins + frozen_builtins = frozendict(__builtins__) + code = compile("__builtins__['superglobal']=2; print(superglobal)", "test", "exec") + self.assertRaises(frozendict_error, + exec, code, {'__builtins__': frozen_builtins}) + + # read-only globals + namespace = frozendict({}) + code = compile("x=1", "test", "exec") + self.assertRaises(frozendict_error, + exec, code, namespace) + def test_exec_redirected(self): savestdout = sys.stdout sys.stdout = None # Whatever that cannot flush() @@ -556,6 +626,11 @@ class BuiltinTest(unittest.TestCase): self.assertEqual(list(filter(lambda x: x>=3, (1, 2, 3, 4))), [3, 4]) self.assertRaises(TypeError, list, filter(42, (1, 2))) + def test_filter_pickle(self): + f1 = filter(filter_char, "abcdeabcde") + f2 = filter(filter_char, "abcdeabcde") + self.check_iter_pickle(f1, list(f2)) + def test_getattr(self): self.assertTrue(getattr(sys, 'stdout') is sys.stdout) self.assertRaises(TypeError, getattr, sys, 1) @@ -749,6 +824,11 @@ class BuiltinTest(unittest.TestCase): raise RuntimeError self.assertRaises(RuntimeError, list, map(badfunc, range(5))) + def test_map_pickle(self): + m1 = map(map_char, "Is this the real life?") + m2 = map(map_char, "Is this the real life?") + self.check_iter_pickle(m1, list(m2)) + def test_max(self): self.assertEqual(max('123123'), '3') self.assertEqual(max(1, 2, 3), 3) @@ -882,7 +962,29 @@ class BuiltinTest(unittest.TestCase): self.assertEqual(fp.read(1000), 'YYY'*100) finally: fp.close() - unlink(TESTFN) + unlink(TESTFN) + + def test_open_default_encoding(self): + old_environ = dict(os.environ) + try: + # try to get a user preferred encoding different than the current + # locale encoding to check that open() uses the current locale + # encoding and not the user preferred encoding + for key in ('LC_ALL', 'LANG', 'LC_CTYPE'): + if key in os.environ: + del os.environ[key] + + self.write_testfile() + current_locale_encoding = locale.getpreferredencoding(False) + fp = open(TESTFN, 'w') + try: + self.assertEqual(fp.encoding, current_locale_encoding) + finally: + fp.close() + unlink(TESTFN) + finally: + os.environ.clear() + os.environ.update(old_environ) def test_ord(self): self.assertEqual(ord(' '), 32) @@ -1072,6 +1174,8 @@ class BuiltinTest(unittest.TestCase): # Check stdin/stdout error handler is used when invoking GNU readline self.check_input_tty("prompté", b"quux\xe9", "ascii") + # test_int(): see test_int.py for tests of built-in function int(). + def test_repr(self): self.assertEqual(repr(''), '\'\'') self.assertEqual(repr(0), '0') @@ -1200,6 +1304,9 @@ class BuiltinTest(unittest.TestCase): self.assertRaises(TypeError, sum, 42) self.assertRaises(TypeError, sum, ['a', 'b', 'c']) self.assertRaises(TypeError, sum, ['a', 'b', 'c'], '') + self.assertRaises(TypeError, sum, [b'a', b'c'], b'') + values = [bytearray(b'a'), bytearray(b'b')] + self.assertRaises(TypeError, sum, values, bytearray(b'')) self.assertRaises(TypeError, sum, [[1], [2], [3]]) self.assertRaises(TypeError, sum, [{2:3}]) self.assertRaises(TypeError, sum, [{2:3}]*2, {2:3}) @@ -1288,6 +1395,13 @@ class BuiltinTest(unittest.TestCase): return i self.assertRaises(ValueError, list, zip(BadSeq(), BadSeq())) + def test_zip_pickle(self): + a = (1, 2, 3) + b = (4, 5, 6) + t = [(1, 4), (2, 5), (3, 6)] + z1 = zip(a, b) + self.check_iter_pickle(z1, t) + def test_format(self): # Test the basic machinery of the format() builtin. Don't test # the specifics of the various formatters @@ -1361,14 +1475,14 @@ class BuiltinTest(unittest.TestCase): # -------------------------------------------------------------------- # Issue #7994: object.__format__ with a non-empty format string is - # pending deprecated + # deprecated def test_deprecated_format_string(obj, fmt_str, should_raise_warning): with warnings.catch_warnings(record=True) as w: - warnings.simplefilter("always", PendingDeprecationWarning) + warnings.simplefilter("always", DeprecationWarning) format(obj, fmt_str) if should_raise_warning: self.assertEqual(len(w), 1) - self.assertIsInstance(w[0].message, PendingDeprecationWarning) + self.assertIsInstance(w[0].message, DeprecationWarning) self.assertIn('object.__format__ with a non-empty format ' 'string', str(w[0].message)) else: @@ -1412,6 +1526,13 @@ class BuiltinTest(unittest.TestCase): self.assertRaises(ValueError, x.translate, b"1", 1) self.assertRaises(TypeError, x.translate, b"1"*256, 1) + def test_construct_singletons(self): + for const in None, Ellipsis, NotImplemented: + tp = type(const) + self.assertIs(tp(), const) + self.assertRaises(TypeError, tp, 1, 2) + self.assertRaises(TypeError, tp, a=1, b=2) + class TestSorted(unittest.TestCase): def test_basic(self): |