class SortedDictTests(SimpleTestCase):
def setUp(self):
self.d1 = SortedDict()
self.d1[7] = 'seven'
self.d1[1] = 'one'
self.d1[9] = 'nine'
self.d2 = SortedDict()
self.d2[1] = 'one'
self.d2[9] = 'nine'
self.d2[0] = 'nil'
self.d2[7] = 'seven'
def test_basic_methods(self):
self.assertEqual(list(six.iterkeys(self.d1)), [7, 1, 9])
self.assertEqual(list(six.itervalues(self.d1)), ['seven', 'one', 'nine'])
self.assertEqual(list(six.iteritems(self.d1)), [(7, 'seven'), (1, 'one'), (9, 'nine')])
def test_overwrite_ordering(self):
""" Overwriting an item keeps its place. """
self.d1[1] = 'ONE'
self.assertEqual(list(six.itervalues(self.d1)), ['seven', 'ONE', 'nine'])
def test_append_items(self):
""" New items go to the end. """
self.d1[0] = 'nil'
self.assertEqual(list(six.iterkeys(self.d1)), [7, 1, 9, 0])
def test_delete_and_insert(self):
"""
Deleting an item, then inserting the same key again will place it
at the end.
"""
del self.d2[7]
self.assertEqual(list(six.iterkeys(self.d2)), [1, 9, 0])
self.d2[7] = 'lucky number 7'
self.assertEqual(list(six.iterkeys(self.d2)), [1, 9, 0, 7])
if not six.PY3:
def test_change_keys(self):
"""
Changing the keys won't do anything, it's only a copy of the
keys dict.
This test doesn't make sense under Python 3 because keys is
an iterator.
"""
k = self.d2.keys()
k.remove(9)
self.assertEqual(self.d2.keys(), [1, 9, 0, 7])
def test_init_keys(self):
"""
Initialising a SortedDict with two keys will just take the first one.
A real dict will actually take the second value so we will too, but
we'll keep the ordering from the first key found.
"""
tuples = ((2, 'two'), (1, 'one'), (2, 'second-two'))
d = SortedDict(tuples)
self.assertEqual(list(six.iterkeys(d)), [2, 1])
real_dict = dict(tuples)
self.assertEqual(sorted(six.itervalues(real_dict)), ['one', 'second-two'])
# Here the order of SortedDict values *is* what we are testing
self.assertEqual(list(six.itervalues(d)), ['second-two', 'one'])
def test_overwrite(self):
self.d1[1] = 'not one'
self.assertEqual(self.d1[1], 'not one')
self.assertEqual(list(six.iterkeys(self.d1)), list(six.iterkeys(self.d1.copy())))
def test_append(self):
self.d1[13] = 'thirteen'
self.assertEqual(
repr(self.d1),
"{7: 'seven', 1: 'one', 9: 'nine', 13: 'thirteen'}"
)
def test_pop(self):
self.assertEqual(self.d1.pop(1, 'missing'), 'one')
self.assertEqual(self.d1.pop(1, 'missing'), 'missing')
# We don't know which item will be popped in popitem(), so we'll
# just check that the number of keys has decreased.
l = len(self.d1)
self.d1.popitem()
self.assertEqual(l - len(self.d1), 1)
def test_dict_equality(self):
d = SortedDict((i, i) for i in range(3))
self.assertEqual(d, {0: 0, 1: 1, 2: 2})
def test_tuple_init(self):
d = SortedDict(((1, "one"), (0, "zero"), (2, "two")))
self.assertEqual(repr(d), "{1: 'one', 0: 'zero', 2: 'two'}")
def test_pickle(self):
self.assertEqual(
pickle.loads(pickle.dumps(self.d1, 2)),
{7: 'seven', 1: 'one', 9: 'nine'}
)
def test_copy(self):
orig = SortedDict(((1, "one"), (0, "zero"), (2, "two")))
copied = copy.copy(orig)
self.assertEqual(list(six.iterkeys(orig)), [1, 0, 2])
self.assertEqual(list(six.iterkeys(copied)), [1, 0, 2])
def test_clear(self):
self.d1.clear()
self.assertEqual(self.d1, {})
self.assertEqual(self.d1.keyOrder, [])
def test_insert(self):
d = SortedDict()
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
d.insert(0, "hello", "world")
assert w[0].category is PendingDeprecationWarning
def test_value_for_index(self):
d = SortedDict({"a": 3})
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
self.assertEqual(d.value_for_index(0), 3)
assert w[0].category is PendingDeprecationWarning
