def testSymmetricDifference(self):
ks = KeyedSet(firstLetter, ["apple", "avocado", "banana", "cheese"])
other = ["apple", "acacia", "banana", "durian"]
result = ks.symmetric_difference(other)
self.assertEqual(result, set(["acacia", "avocado", "cheese", "durian"]))
# No side-effects
self.assertEqual(ks, set(["apple", "avocado", "banana", "cheese"]))
self.assertEqual(other, ["apple", "acacia", "banana", "durian"])
# Proper key sets
self.assertEqual(result.keys(), ["a", "c", "d"])
self.assertEqual(result.subset_by_key("a"), set(["acacia", "avocado"]))
self.assertEqual(result.subset_by_key("b"), set())
self.assertEqual(result.subset_by_key("c"), set(["cheese"]))
self.assertEqual(result.subset_by_key("d"), set(["durian"]))
# _update
copy = ks.copy()
copy.symmetric_difference_update(other)
# No unintended side-effects
self.assertEqual(other, ["apple", "acacia", "banana", "durian"])
self.assertEqual(result, copy)
self.assertEqual(sorted(result.keys()), sorted(copy.keys()))
for key in result.keys():
self.assertEqual(result.subset_by_key(key), copy.subset_by_key(key))
def testSymmetricDifference(self):
ks = KeyedSet(firstLetter, ["apple", "avocado", "banana", "cheese"])
other = ["apple", "acacia", "banana", "durian"]
result = ks.symmetric_difference(other)
self.assertEqual(result, set(["acacia", "avocado", "cheese",
"durian"]))
# No side-effects
self.assertEqual(ks, set(["apple", "avocado", "banana", "cheese"]))
self.assertEqual(other, ["apple", "acacia", "banana", "durian"])
# Proper key sets
self.assertEqual(result.keys(), ['a', 'c', 'd'])
self.assertEqual(result.subset_by_key("a"), set(["acacia", "avocado"]))
self.assertEqual(result.subset_by_key("b"), set())
self.assertEqual(result.subset_by_key("c"), set(["cheese"]))
self.assertEqual(result.subset_by_key("d"), set(["durian"]))
# _update
copy = ks.copy()
copy.symmetric_difference_update(other)
# No unintended side-effects
self.assertEqual(other, ["apple", "acacia", "banana", "durian"])
self.assertEqual(result, copy)
self.assertEqual(sorted(result.keys()), sorted(copy.keys()))
for key in result.keys():
self.assertEqual(result.subset_by_key(key),
copy.subset_by_key(key))
