mirror of https://github.com/python/cpython
348 lines
14 KiB
Python
348 lines
14 KiB
Python
import copy
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import os
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import pickle
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import re
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import time
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import unittest
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class StructSeqTest(unittest.TestCase):
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def test_tuple(self):
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t = time.gmtime()
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self.assertIsInstance(t, tuple)
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astuple = tuple(t)
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self.assertEqual(len(t), len(astuple))
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self.assertEqual(t, astuple)
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# Check that slicing works the same way; at one point, slicing t[i:j] with
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# 0 < i < j could produce NULLs in the result.
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for i in range(-len(t), len(t)):
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self.assertEqual(t[i:], astuple[i:])
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for j in range(-len(t), len(t)):
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self.assertEqual(t[i:j], astuple[i:j])
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for j in range(-len(t), len(t)):
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self.assertEqual(t[:j], astuple[:j])
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self.assertRaises(IndexError, t.__getitem__, -len(t)-1)
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self.assertRaises(IndexError, t.__getitem__, len(t))
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for i in range(-len(t), len(t)-1):
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self.assertEqual(t[i], astuple[i])
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def test_repr(self):
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t = time.gmtime()
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self.assertTrue(repr(t))
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t = time.gmtime(0)
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self.assertEqual(repr(t),
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"time.struct_time(tm_year=1970, tm_mon=1, tm_mday=1, tm_hour=0, "
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"tm_min=0, tm_sec=0, tm_wday=3, tm_yday=1, tm_isdst=0)")
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# os.stat() gives a complicated struct sequence.
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st = os.stat(__file__)
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rep = repr(st)
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self.assertTrue(rep.startswith("os.stat_result"))
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self.assertIn("st_mode=", rep)
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self.assertIn("st_ino=", rep)
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self.assertIn("st_dev=", rep)
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def test_concat(self):
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t1 = time.gmtime()
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t2 = t1 + tuple(t1)
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for i in range(len(t1)):
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self.assertEqual(t2[i], t2[i+len(t1)])
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def test_repeat(self):
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t1 = time.gmtime()
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t2 = 3 * t1
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for i in range(len(t1)):
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self.assertEqual(t2[i], t2[i+len(t1)])
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self.assertEqual(t2[i], t2[i+2*len(t1)])
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def test_contains(self):
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t1 = time.gmtime()
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for item in t1:
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self.assertIn(item, t1)
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self.assertNotIn(-42, t1)
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def test_hash(self):
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t1 = time.gmtime()
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self.assertEqual(hash(t1), hash(tuple(t1)))
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def test_cmp(self):
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t1 = time.gmtime()
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t2 = type(t1)(t1)
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self.assertEqual(t1, t2)
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self.assertTrue(not (t1 < t2))
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self.assertTrue(t1 <= t2)
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self.assertTrue(not (t1 > t2))
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self.assertTrue(t1 >= t2)
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self.assertTrue(not (t1 != t2))
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def test_fields(self):
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t = time.gmtime()
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self.assertEqual(len(t), t.n_sequence_fields)
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self.assertEqual(t.n_unnamed_fields, 0)
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self.assertEqual(t.n_fields, time._STRUCT_TM_ITEMS)
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def test_constructor(self):
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t = time.struct_time
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self.assertRaises(TypeError, t)
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self.assertRaises(TypeError, t, None)
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self.assertRaises(TypeError, t, "123")
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self.assertRaises(TypeError, t, "123", dict={})
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self.assertRaises(TypeError, t, "123456789", dict=None)
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self.assertRaises(TypeError, t, seq="123456789", dict={})
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self.assertEqual(t("123456789"), tuple("123456789"))
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self.assertEqual(t("123456789", {}), tuple("123456789"))
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self.assertEqual(t("123456789", dict={}), tuple("123456789"))
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self.assertEqual(t(sequence="123456789", dict={}), tuple("123456789"))
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self.assertEqual(t("1234567890"), tuple("123456789"))
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self.assertEqual(t("1234567890").tm_zone, "0")
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self.assertEqual(t("123456789", {"tm_zone": "some zone"}), tuple("123456789"))
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self.assertEqual(t("123456789", {"tm_zone": "some zone"}).tm_zone, "some zone")
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s = "123456789"
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self.assertEqual("".join(t(s)), s)
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def test_constructor_with_duplicate_fields(self):
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t = time.struct_time
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error_message = re.escape("got duplicate or unexpected field name(s)")
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with self.assertRaisesRegex(TypeError, error_message):
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t("1234567890", dict={"tm_zone": "some zone"})
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with self.assertRaisesRegex(TypeError, error_message):
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t("1234567890", dict={"tm_zone": "some zone", "tm_mon": 1})
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with self.assertRaisesRegex(TypeError, error_message):
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t("1234567890", dict={"error": 0, "tm_zone": "some zone"})
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with self.assertRaisesRegex(TypeError, error_message):
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t("1234567890", dict={"error": 0, "tm_zone": "some zone", "tm_mon": 1})
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def test_constructor_with_duplicate_unnamed_fields(self):
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assert os.stat_result.n_unnamed_fields > 0
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n_visible_fields = os.stat_result.n_sequence_fields
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r = os.stat_result(range(n_visible_fields), {'st_atime': -1.0})
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self.assertEqual(r.st_atime, -1.0)
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self.assertEqual(r, tuple(range(n_visible_fields)))
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r = os.stat_result((*range(n_visible_fields), -1.0))
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self.assertEqual(r.st_atime, -1.0)
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self.assertEqual(r, tuple(range(n_visible_fields)))
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with self.assertRaisesRegex(TypeError,
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re.escape("got duplicate or unexpected field name(s)")):
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os.stat_result((*range(n_visible_fields), -1.0), {'st_atime': -1.0})
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def test_constructor_with_unknown_fields(self):
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t = time.struct_time
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error_message = re.escape("got duplicate or unexpected field name(s)")
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with self.assertRaisesRegex(TypeError, error_message):
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t("123456789", dict={"tm_year": 0})
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with self.assertRaisesRegex(TypeError, error_message):
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t("123456789", dict={"tm_year": 0, "tm_mon": 1})
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with self.assertRaisesRegex(TypeError, error_message):
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t("123456789", dict={"tm_zone": "some zone", "tm_mon": 1})
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with self.assertRaisesRegex(TypeError, error_message):
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t("123456789", dict={"tm_zone": "some zone", "error": 0})
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with self.assertRaisesRegex(TypeError, error_message):
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t("123456789", dict={"error": 0, "tm_zone": "some zone", "tm_mon": 1})
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with self.assertRaisesRegex(TypeError, error_message):
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t("123456789", dict={"error": 0})
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with self.assertRaisesRegex(TypeError, error_message):
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t("123456789", dict={"tm_zone": "some zone", "error": 0})
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def test_eviltuple(self):
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class Exc(Exception):
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pass
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# Devious code could crash structseqs' constructors
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class C:
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def __getitem__(self, i):
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raise Exc
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def __len__(self):
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return 9
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self.assertRaises(Exc, time.struct_time, C())
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def test_pickling(self):
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t = time.gmtime()
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for proto in range(pickle.HIGHEST_PROTOCOL + 1):
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p = pickle.dumps(t, proto)
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t2 = pickle.loads(p)
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self.assertEqual(t2.__class__, t.__class__)
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self.assertEqual(t2, t)
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self.assertEqual(t2.tm_year, t.tm_year)
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self.assertEqual(t2.tm_zone, t.tm_zone)
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def test_pickling_with_unnamed_fields(self):
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assert os.stat_result.n_unnamed_fields > 0
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r = os.stat_result(range(os.stat_result.n_sequence_fields),
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{'st_atime': 1.0, 'st_atime_ns': 2.0})
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for proto in range(pickle.HIGHEST_PROTOCOL + 1):
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p = pickle.dumps(r, proto)
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r2 = pickle.loads(p)
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self.assertEqual(r2.__class__, r.__class__)
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self.assertEqual(r2, r)
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self.assertEqual(r2.st_mode, r.st_mode)
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self.assertEqual(r2.st_atime, r.st_atime)
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self.assertEqual(r2.st_atime_ns, r.st_atime_ns)
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def test_copying(self):
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n_fields = time.struct_time.n_fields
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t = time.struct_time([[i] for i in range(n_fields)])
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t2 = copy.copy(t)
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self.assertEqual(t2.__class__, t.__class__)
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self.assertEqual(t2, t)
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self.assertEqual(t2.tm_year, t.tm_year)
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self.assertEqual(t2.tm_zone, t.tm_zone)
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self.assertIs(t2[0], t[0])
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self.assertIs(t2.tm_year, t.tm_year)
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t3 = copy.deepcopy(t)
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self.assertEqual(t3.__class__, t.__class__)
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self.assertEqual(t3, t)
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self.assertEqual(t3.tm_year, t.tm_year)
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self.assertEqual(t3.tm_zone, t.tm_zone)
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self.assertIsNot(t3[0], t[0])
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self.assertIsNot(t3.tm_year, t.tm_year)
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def test_copying_with_unnamed_fields(self):
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assert os.stat_result.n_unnamed_fields > 0
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n_sequence_fields = os.stat_result.n_sequence_fields
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r = os.stat_result([[i] for i in range(n_sequence_fields)],
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{'st_atime': [1.0], 'st_atime_ns': [2.0]})
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r2 = copy.copy(r)
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self.assertEqual(r2.__class__, r.__class__)
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self.assertEqual(r2, r)
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self.assertEqual(r2.st_mode, r.st_mode)
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self.assertEqual(r2.st_atime, r.st_atime)
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self.assertEqual(r2.st_atime_ns, r.st_atime_ns)
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self.assertIs(r2[0], r[0])
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self.assertIs(r2.st_mode, r.st_mode)
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self.assertIs(r2.st_atime, r.st_atime)
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self.assertIs(r2.st_atime_ns, r.st_atime_ns)
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r3 = copy.deepcopy(r)
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self.assertEqual(r3.__class__, r.__class__)
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self.assertEqual(r3, r)
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self.assertEqual(r3.st_mode, r.st_mode)
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self.assertEqual(r3.st_atime, r.st_atime)
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self.assertEqual(r3.st_atime_ns, r.st_atime_ns)
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self.assertIsNot(r3[0], r[0])
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self.assertIsNot(r3.st_mode, r.st_mode)
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self.assertIsNot(r3.st_atime, r.st_atime)
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self.assertIsNot(r3.st_atime_ns, r.st_atime_ns)
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def test_extended_getslice(self):
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# Test extended slicing by comparing with list slicing.
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t = time.gmtime()
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L = list(t)
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indices = (0, None, 1, 3, 19, 300, -1, -2, -31, -300)
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for start in indices:
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for stop in indices:
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# Skip step 0 (invalid)
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for step in indices[1:]:
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self.assertEqual(list(t[start:stop:step]),
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L[start:stop:step])
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def test_match_args(self):
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expected_args = ('tm_year', 'tm_mon', 'tm_mday', 'tm_hour', 'tm_min',
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'tm_sec', 'tm_wday', 'tm_yday', 'tm_isdst')
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self.assertEqual(time.struct_time.__match_args__, expected_args)
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def test_match_args_with_unnamed_fields(self):
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expected_args = ('st_mode', 'st_ino', 'st_dev', 'st_nlink', 'st_uid',
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'st_gid', 'st_size')
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self.assertEqual(os.stat_result.n_unnamed_fields, 3)
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self.assertEqual(os.stat_result.__match_args__, expected_args)
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def test_copy_replace_all_fields_visible(self):
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assert os.times_result.n_unnamed_fields == 0
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assert os.times_result.n_sequence_fields == os.times_result.n_fields
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t = os.times()
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# visible fields
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self.assertEqual(copy.replace(t), t)
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self.assertIsInstance(copy.replace(t), os.times_result)
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self.assertEqual(copy.replace(t, user=1.5), (1.5, *t[1:]))
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self.assertEqual(copy.replace(t, system=2.5), (t[0], 2.5, *t[2:]))
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self.assertEqual(copy.replace(t, user=1.5, system=2.5), (1.5, 2.5, *t[2:]))
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# unknown fields
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with self.assertRaisesRegex(TypeError, 'unexpected field name'):
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copy.replace(t, error=-1)
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with self.assertRaisesRegex(TypeError, 'unexpected field name'):
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copy.replace(t, user=1, error=-1)
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def test_copy_replace_with_invisible_fields(self):
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assert time.struct_time.n_unnamed_fields == 0
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assert time.struct_time.n_sequence_fields < time.struct_time.n_fields
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t = time.gmtime(0)
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# visible fields
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t2 = copy.replace(t)
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self.assertEqual(t2, (1970, 1, 1, 0, 0, 0, 3, 1, 0))
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self.assertIsInstance(t2, time.struct_time)
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t3 = copy.replace(t, tm_year=2000)
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self.assertEqual(t3, (2000, 1, 1, 0, 0, 0, 3, 1, 0))
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self.assertEqual(t3.tm_year, 2000)
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t4 = copy.replace(t, tm_mon=2)
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self.assertEqual(t4, (1970, 2, 1, 0, 0, 0, 3, 1, 0))
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self.assertEqual(t4.tm_mon, 2)
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t5 = copy.replace(t, tm_year=2000, tm_mon=2)
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self.assertEqual(t5, (2000, 2, 1, 0, 0, 0, 3, 1, 0))
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self.assertEqual(t5.tm_year, 2000)
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self.assertEqual(t5.tm_mon, 2)
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# named invisible fields
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self.assertTrue(hasattr(t, 'tm_zone'), f"{t} has no attribute 'tm_zone'")
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with self.assertRaisesRegex(AttributeError, 'readonly attribute'):
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t.tm_zone = 'some other zone'
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self.assertEqual(t2.tm_zone, t.tm_zone)
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self.assertEqual(t3.tm_zone, t.tm_zone)
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self.assertEqual(t4.tm_zone, t.tm_zone)
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t6 = copy.replace(t, tm_zone='some other zone')
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self.assertEqual(t, t6)
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self.assertEqual(t6.tm_zone, 'some other zone')
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t7 = copy.replace(t, tm_year=2000, tm_zone='some other zone')
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self.assertEqual(t7, (2000, 1, 1, 0, 0, 0, 3, 1, 0))
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self.assertEqual(t7.tm_year, 2000)
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self.assertEqual(t7.tm_zone, 'some other zone')
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# unknown fields
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with self.assertRaisesRegex(TypeError, 'unexpected field name'):
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copy.replace(t, error=2)
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with self.assertRaisesRegex(TypeError, 'unexpected field name'):
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copy.replace(t, tm_year=2000, error=2)
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with self.assertRaisesRegex(TypeError, 'unexpected field name'):
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copy.replace(t, tm_zone='some other zone', error=2)
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def test_copy_replace_with_unnamed_fields(self):
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assert os.stat_result.n_unnamed_fields > 0
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r = os.stat_result(range(os.stat_result.n_sequence_fields))
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error_message = re.escape('__replace__() is not supported')
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with self.assertRaisesRegex(TypeError, error_message):
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copy.replace(r)
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with self.assertRaisesRegex(TypeError, error_message):
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copy.replace(r, st_mode=1)
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with self.assertRaisesRegex(TypeError, error_message):
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copy.replace(r, error=2)
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with self.assertRaisesRegex(TypeError, error_message):
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copy.replace(r, st_mode=1, error=2)
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if __name__ == "__main__":
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unittest.main()
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