Viewing file:  test_structseq.py (3.87 KB) -rw-r--r--
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import os
import time
import unittest
class StructSeqTest(unittest.TestCase):
def test_tuple(self):
t = time.gmtime()
self.assertIsInstance(t, tuple)
astuple = tuple(t)
self.assertEqual(len(t), len(astuple))
self.assertEqual(t, astuple)
# Check that slicing works the same way; at one point, slicing t[i:j] with
# 0 < i < j could produce NULLs in the result.
for i in range(-len(t), len(t)):
self.assertEqual(t[i:], astuple[i:])
for j in range(-len(t), len(t)):
self.assertEqual(t[i:j], astuple[i:j])
for j in range(-len(t), len(t)):
self.assertEqual(t[:j], astuple[:j])
self.assertRaises(IndexError, t.__getitem__, -len(t)-1)
self.assertRaises(IndexError, t.__getitem__, len(t))
for i in range(-len(t), len(t)-1):
self.assertEqual(t[i], astuple[i])
def test_repr(self):
t = time.gmtime()
self.assertTrue(repr(t))
t = time.gmtime(0)
self.assertEqual(repr(t),
"time.struct_time(tm_year=1970, tm_mon=1, tm_mday=1, tm_hour=0, "
"tm_min=0, tm_sec=0, tm_wday=3, tm_yday=1, tm_isdst=0)")
# os.stat() gives a complicated struct sequence.
st = os.stat(__file__)
rep = repr(st)
self.assertTrue(rep.startswith("os.stat_result"))
self.assertIn("st_mode=", rep)
self.assertIn("st_ino=", rep)
self.assertIn("st_dev=", rep)
def test_concat(self):
t1 = time.gmtime()
t2 = t1 + tuple(t1)
for i in range(len(t1)):
self.assertEqual(t2[i], t2[i+len(t1)])
def test_repeat(self):
t1 = time.gmtime()
t2 = 3 * t1
for i in range(len(t1)):
self.assertEqual(t2[i], t2[i+len(t1)])
self.assertEqual(t2[i], t2[i+2*len(t1)])
def test_contains(self):
t1 = time.gmtime()
for item in t1:
self.assertIn(item, t1)
self.assertNotIn(-42, t1)
def test_hash(self):
t1 = time.gmtime()
self.assertEqual(hash(t1), hash(tuple(t1)))
def test_cmp(self):
t1 = time.gmtime()
t2 = type(t1)(t1)
self.assertEqual(t1, t2)
self.assertTrue(not (t1 < t2))
self.assertTrue(t1 <= t2)
self.assertTrue(not (t1 > t2))
self.assertTrue(t1 >= t2)
self.assertTrue(not (t1 != t2))
def test_fields(self):
t = time.gmtime()
self.assertEqual(len(t), t.n_sequence_fields)
self.assertEqual(t.n_unnamed_fields, 0)
self.assertEqual(t.n_fields, time._STRUCT_TM_ITEMS)
def test_constructor(self):
t = time.struct_time
self.assertRaises(TypeError, t)
self.assertRaises(TypeError, t, None)
self.assertRaises(TypeError, t, "123")
self.assertRaises(TypeError, t, "123", dict={})
self.assertRaises(TypeError, t, "123456789", dict=None)
s = "123456789"
self.assertEqual("".join(t(s)), s)
def test_eviltuple(self):
class Exc(Exception):
pass
# Devious code could crash structseqs' constructors
class C:
def __getitem__(self, i):
raise Exc
def __len__(self):
return 9
self.assertRaises(Exc, time.struct_time, C())
def test_reduce(self):
t = time.gmtime()
x = t.__reduce__()
def test_extended_getslice(self):
# Test extended slicing by comparing with list slicing.
t = time.gmtime()
L = list(t)
indices = (0, None, 1, 3, 19, 300, -1, -2, -31, -300)
for start in indices:
for stop in indices:
# Skip step 0 (invalid)
for step in indices[1:]:
self.assertEqual(list(t[start:stop:step]),
L[start:stop:step])
if __name__ == "__main__":
unittest.main()
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