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/Lib/test/test_structseq.py

http://unladen-swallow.googlecode.com/
Python | 120 lines | 102 code | 16 blank | 2 comment | 17 complexity | 57967d4befb42cd3491f271e675eaeb5 MD5 | raw file
  1import unittest
  2from test import test_support
  3
  4import time
  5
  6class StructSeqTest(unittest.TestCase):
  7
  8    def test_tuple(self):
  9        t = time.gmtime()
 10        astuple = tuple(t)
 11        self.assertEqual(len(t), len(astuple))
 12        self.assertEqual(t, astuple)
 13
 14        # Check that slicing works the same way; at one point, slicing t[i:j] with
 15        # 0 < i < j could produce NULLs in the result.
 16        for i in xrange(-len(t), len(t)):
 17            self.assertEqual(t[i:], astuple[i:])
 18            for j in xrange(-len(t), len(t)):
 19                self.assertEqual(t[i:j], astuple[i:j])
 20
 21        for j in xrange(-len(t), len(t)):
 22            self.assertEqual(t[:j], astuple[:j])
 23
 24        self.assertRaises(IndexError, t.__getitem__, -len(t)-1)
 25        self.assertRaises(IndexError, t.__getitem__, len(t))
 26        for i in xrange(-len(t), len(t)-1):
 27            self.assertEqual(t[i], astuple[i])
 28
 29    def test_repr(self):
 30        t = time.gmtime()
 31        self.assert_(repr(t))
 32        t = time.gmtime(0)
 33        self.assertEqual(repr(t),
 34            "time.struct_time(tm_year=1970, tm_mon=1, tm_mday=1, tm_hour=0, "
 35            "tm_min=0, tm_sec=0, tm_wday=3, tm_yday=1, tm_isdst=0)")
 36
 37    def test_concat(self):
 38        t1 = time.gmtime()
 39        t2 = t1 + tuple(t1)
 40        for i in xrange(len(t1)):
 41            self.assertEqual(t2[i], t2[i+len(t1)])
 42
 43    def test_repeat(self):
 44        t1 = time.gmtime()
 45        t2 = 3 * t1
 46        for i in xrange(len(t1)):
 47            self.assertEqual(t2[i], t2[i+len(t1)])
 48            self.assertEqual(t2[i], t2[i+2*len(t1)])
 49
 50    def test_contains(self):
 51        t1 = time.gmtime()
 52        for item in t1:
 53            self.assert_(item in t1)
 54        self.assert_(-42 not in t1)
 55
 56    def test_hash(self):
 57        t1 = time.gmtime()
 58        self.assertEqual(hash(t1), hash(tuple(t1)))
 59
 60    def test_cmp(self):
 61        t1 = time.gmtime()
 62        t2 = type(t1)(t1)
 63        self.assertEqual(t1, t2)
 64        self.assert_(not (t1 < t2))
 65        self.assert_(t1 <= t2)
 66        self.assert_(not (t1 > t2))
 67        self.assert_(t1 >= t2)
 68        self.assert_(not (t1 != t2))
 69
 70    def test_fields(self):
 71        t = time.gmtime()
 72        self.assertEqual(len(t), t.n_fields)
 73        self.assertEqual(t.n_fields, t.n_sequence_fields+t.n_unnamed_fields)
 74
 75    def test_constructor(self):
 76        t = time.struct_time
 77
 78        self.assertRaises(TypeError, t)
 79        self.assertRaises(TypeError, t, None)
 80        self.assertRaises(TypeError, t, "123")
 81        self.assertRaises(TypeError, t, "123", dict={})
 82        self.assertRaises(TypeError, t, "123456789", dict=None)
 83
 84        s = "123456789"
 85        self.assertEqual("".join(t(s)), s)
 86
 87    def test_eviltuple(self):
 88        class Exc(Exception):
 89            pass
 90
 91        # Devious code could crash structseqs' contructors
 92        class C:
 93            def __getitem__(self, i):
 94                raise Exc
 95            def __len__(self):
 96                return 9
 97
 98        self.assertRaises(Exc, time.struct_time, C())
 99
100    def test_reduce(self):
101        t = time.gmtime()
102        x = t.__reduce__()
103
104    def test_extended_getslice(self):
105        # Test extended slicing by comparing with list slicing.
106        t = time.gmtime()
107        L = list(t)
108        indices = (0, None, 1, 3, 19, 300, -1, -2, -31, -300)
109        for start in indices:
110            for stop in indices:
111                # Skip step 0 (invalid)
112                for step in indices[1:]:
113                    self.assertEqual(list(t[start:stop:step]),
114                                     L[start:stop:step])
115
116def test_main():
117    test_support.run_unittest(StructSeqTest)
118
119if __name__ == "__main__":
120    test_main()