Set classes and their unit tests, from sandbox.
diff --git a/Lib/test/test_sets.py b/Lib/test/test_sets.py
new file mode 100644
index 0000000..6c72b0e
--- /dev/null
+++ b/Lib/test/test_sets.py
@@ -0,0 +1,568 @@
+#!/usr/bin/env python
+
+import unittest, operator, copy
+from sets import Set, ImmutableSet
+from test import test_support
+
+empty_set = Set()
+
+#==============================================================================
+
+class TestBasicOps(unittest.TestCase):
+
+ def test_repr(self):
+ if self.repr is not None:
+ assert `self.set` == self.repr, "Wrong representation for " + self.case
+
+ def test_length(self):
+ assert len(self.set) == self.length, "Wrong length for " + self.case
+
+ def test_self_equality(self):
+ assert self.set == self.set, "Self-equality failed for " + self.case
+
+ def test_equivalent_equality(self):
+ assert self.set == self.dup, "Equivalent equality failed for " + self.case
+
+ def test_copy(self):
+ assert self.set.copy() == self.dup, "Copy and comparison failed for " + self.case
+
+ def test_self_union(self):
+ result = self.set | self.set
+ assert result == self.dup, "Self-union failed for " + self.case
+
+ def test_empty_union(self):
+ result = self.set | empty_set
+ assert result == self.dup, "Union with empty failed for " + self.case
+
+ def test_union_empty(self):
+ result = empty_set | self.set
+ assert result == self.dup, "Union with empty failed for " + self.case
+
+ def test_self_intersection(self):
+ result = self.set & self.set
+ assert result == self.dup, "Self-intersection failed for " + self.case
+
+ def test_empty_intersection(self):
+ result = self.set & empty_set
+ assert result == empty_set, "Intersection with empty failed for " + self.case
+
+ def test_intersection_empty(self):
+ result = empty_set & self.set
+ assert result == empty_set, "Intersection with empty failed for " + self.case
+
+ def test_self_symmetric_difference(self):
+ result = self.set ^ self.set
+ assert result == empty_set, "Self-symdiff failed for " + self.case
+
+ def checkempty_symmetric_difference(self):
+ result = self.set ^ empty_set
+ assert result == self.set, "Symdiff with empty failed for " + self.case
+
+ def test_self_difference(self):
+ result = self.set - self.set
+ assert result == empty_set, "Self-difference failed for " + self.case
+
+ def test_empty_difference(self):
+ result = self.set - empty_set
+ assert result == self.dup, "Difference with empty failed for " + self.case
+
+ def test_empty_difference_rev(self):
+ result = empty_set - self.set
+ assert result == empty_set, "Difference from empty failed for " + self.case
+
+ def test_iteration(self):
+ for v in self.set:
+ assert v in self.values, "Missing item in iteration for " + self.case
+
+#------------------------------------------------------------------------------
+
+class TestBasicOpsEmpty(TestBasicOps):
+ def setUp(self):
+ self.case = "empty set"
+ self.values = []
+ self.set = Set(self.values)
+ self.dup = Set(self.values)
+ self.length = 0
+ self.repr = "Set([])"
+
+#------------------------------------------------------------------------------
+
+class TestBasicOpsSingleton(TestBasicOps):
+ def setUp(self):
+ self.case = "unit set (number)"
+ self.values = [3]
+ self.set = Set(self.values)
+ self.dup = Set(self.values)
+ self.length = 1
+ self.repr = "Set([3])"
+
+ def test_in(self):
+ assert 3 in self.set, "Valueship for unit set"
+
+ def test_not_in(self):
+ assert 2 not in self.set, "Non-valueship for unit set"
+
+#------------------------------------------------------------------------------
+
+class TestBasicOpsTuple(TestBasicOps):
+ def setUp(self):
+ self.case = "unit set (tuple)"
+ self.values = [(0, "zero")]
+ self.set = Set(self.values)
+ self.dup = Set(self.values)
+ self.length = 1
+ self.repr = "Set([(0, 'zero')])"
+
+ def test_in(self):
+ assert (0, "zero") in self.set, "Valueship for tuple set"
+
+ def test_not_in(self):
+ assert 9 not in self.set, "Non-valueship for tuple set"
+
+#------------------------------------------------------------------------------
+
+class TestBasicOpsTriple(TestBasicOps):
+ def setUp(self):
+ self.case = "triple set"
+ self.values = [0, "zero", operator.add]
+ self.set = Set(self.values)
+ self.dup = Set(self.values)
+ self.length = 3
+ self.repr = None
+
+#==============================================================================
+
+class TestBinaryOps(unittest.TestCase):
+ def setUp(self):
+ self.set = Set((2, 4, 6))
+
+ def test_union_subset(self):
+ result = self.set | Set([2])
+ assert result == Set((2, 4, 6)), "Subset union"
+
+ def test_union_superset(self):
+ result = self.set | Set([2, 4, 6, 8])
+ assert result == Set([2, 4, 6, 8]), "Superset union"
+
+ def test_union_overlap(self):
+ result = self.set | Set([3, 4, 5])
+ assert result == Set([2, 3, 4, 5, 6]), "Overlapping union"
+
+ def test_union_non_overlap(self):
+ result = self.set | Set([8])
+ assert result == Set([2, 4, 6, 8]), "Non-overlapping union"
+
+ def test_intersection_subset(self):
+ result = self.set & Set((2, 4))
+ assert result == Set((2, 4)), "Subset intersection"
+
+ def test_intersection_superset(self):
+ result = self.set & Set([2, 4, 6, 8])
+ assert result == Set([2, 4, 6]), "Superset intersection"
+
+ def test_intersection_overlap(self):
+ result = self.set & Set([3, 4, 5])
+ assert result == Set([4]), "Overlapping intersection"
+
+ def test_intersection_non_overlap(self):
+ result = self.set & Set([8])
+ assert result == empty_set, "Non-overlapping intersection"
+
+ def test_sym_difference_subset(self):
+ result = self.set ^ Set((2, 4))
+ assert result == Set([6]), "Subset symmetric difference"
+
+ def test_sym_difference_superset(self):
+ result = self.set ^ Set((2, 4, 6, 8))
+ assert result == Set([8]), "Superset symmetric difference"
+
+ def test_sym_difference_overlap(self):
+ result = self.set ^ Set((3, 4, 5))
+ assert result == Set([2, 3, 5, 6]), "Overlapping symmetric difference"
+
+ def test_sym_difference_non_overlap(self):
+ result = self.set ^ Set([8])
+ assert result == Set([2, 4, 6, 8]), "Non-overlapping symmetric difference"
+
+#==============================================================================
+
+class TestUpdateOps(unittest.TestCase):
+ def setUp(self):
+ self.set = Set((2, 4, 6))
+
+ def test_union_subset(self):
+ self.set |= Set([2])
+ assert self.set == Set((2, 4, 6)), "Subset union"
+
+ def test_union_superset(self):
+ self.set |= Set([2, 4, 6, 8])
+ assert self.set == Set([2, 4, 6, 8]), "Superset union"
+
+ def test_union_overlap(self):
+ self.set |= Set([3, 4, 5])
+ assert self.set == Set([2, 3, 4, 5, 6]), "Overlapping union"
+
+ def test_union_non_overlap(self):
+ self.set |= Set([8])
+ assert self.set == Set([2, 4, 6, 8]), "Non-overlapping union"
+
+ def test_intersection_subset(self):
+ self.set &= Set((2, 4))
+ assert self.set == Set((2, 4)), "Subset intersection"
+
+ def test_intersection_superset(self):
+ self.set &= Set([2, 4, 6, 8])
+ assert self.set == Set([2, 4, 6]), "Superset intersection"
+
+ def test_intersection_overlap(self):
+ self.set &= Set([3, 4, 5])
+ assert self.set == Set([4]), "Overlapping intersection"
+
+ def test_intersection_non_overlap(self):
+ self.set &= Set([8])
+ assert self.set == empty_set, "Non-overlapping intersection"
+
+ def test_sym_difference_subset(self):
+ self.set ^= Set((2, 4))
+ assert self.set == Set([6]), "Subset symmetric difference"
+
+ def test_sym_difference_superset(self):
+ self.set ^= Set((2, 4, 6, 8))
+ assert self.set == Set([8]), "Superset symmetric difference"
+
+ def test_sym_difference_overlap(self):
+ self.set ^= Set((3, 4, 5))
+ assert self.set == Set([2, 3, 5, 6]), "Overlapping symmetric difference"
+
+ def test_sym_difference_non_overlap(self):
+ self.set ^= Set([8])
+ assert self.set == Set([2, 4, 6, 8]), "Non-overlapping symmetric difference"
+
+#==============================================================================
+
+class TestMutate(unittest.TestCase):
+ def setUp(self):
+ self.values = ["a", "b", "c"]
+ self.set = Set(self.values)
+
+ def test_add_present(self):
+ self.set.add("c")
+ assert self.set == Set(("a", "b", "c")), "Adding present element"
+
+ def test_add_absent(self):
+ self.set.add("d")
+ assert self.set == Set(("a", "b", "c", "d")), "Adding missing element"
+
+ def test_add_until_full(self):
+ tmp = Set()
+ expected_len = 0
+ for v in self.values:
+ tmp.add(v)
+ expected_len += 1
+ assert len(tmp) == expected_len, "Adding values one by one to temporary"
+ assert tmp == self.set, "Adding values one by one"
+
+ def test_remove_present(self):
+ self.set.remove("b")
+ assert self.set == Set(("a", "c")), "Removing present element"
+
+ def test_remove_absent(self):
+ try:
+ self.set.remove("d")
+ assert 0, "Removing missing element"
+ except LookupError:
+ pass
+
+ def test_remove_until_empty(self):
+ expected_len = len(self.set)
+ for v in self.values:
+ self.set.remove(v)
+ expected_len -= 1
+ assert len(self.set) == expected_len, "Removing values one by one"
+
+ def test_discard_present(self):
+ self.set.discard("c")
+ assert self.set == Set(("a", "b")), "Discarding present element"
+
+ def test_discard_absent(self):
+ self.set.discard("d")
+ assert self.set == Set(("a", "b", "c")), "Discarding missing element"
+
+ def test_clear(self):
+ self.set.clear()
+ assert len(self.set) == 0, "Clearing set"
+
+ def test_popitem(self):
+ popped = {}
+ while self.set:
+ popped[self.set.popitem()] = None
+ assert len(popped) == len(self.values), "Popping items"
+ for v in self.values:
+ assert v in popped, "Popping items"
+
+ def test_update_empty_tuple(self):
+ self.set.update(())
+ assert self.set == Set(self.values), "Updating with empty tuple"
+
+ def test_update_unit_tuple_overlap(self):
+ self.set.update(("a",))
+ assert self.set == Set(self.values), "Updating with overlapping unit tuple"
+
+ def test_update_unit_tuple_non_overlap(self):
+ self.set.update(("a", "z"))
+ assert self.set == Set(self.values + ["z"]), "Updating with non-overlapping unit tuple"
+
+#==============================================================================
+
+class TestSubsets(unittest.TestCase):
+
+ def test_issubset(self):
+ result = self.left.issubset(self.right)
+ if "<" in self.cases:
+ assert result, "subset: " + self.name
+ else:
+ assert not result, "non-subset: " + self.name
+
+#------------------------------------------------------------------------------
+
+class TestSubsetEqualEmpty(TestSubsets):
+ def setUp(self):
+ self.left = Set()
+ self.right = Set()
+ self.name = "both empty"
+ self.cases = "<>"
+
+#------------------------------------------------------------------------------
+
+class TestSubsetEqualNonEmpty(TestSubsets):
+ def setUp(self):
+ self.left = Set([1, 2])
+ self.right = Set([1, 2])
+ self.name = "equal pair"
+ self.cases = "<>"
+
+#------------------------------------------------------------------------------
+
+class TestSubsetEmptyNonEmpty(TestSubsets):
+ def setUp(self):
+ self.left = Set()
+ self.right = Set([1, 2])
+ self.name = "one empty, one non-empty"
+ self.cases = "<"
+
+#------------------------------------------------------------------------------
+
+class TestSubsetPartial(TestSubsets):
+ def setUp(self):
+ self.left = Set([1])
+ self.right = Set([1, 2])
+ self.name = "one a non-empty subset of other"
+ self.cases = "<"
+
+#------------------------------------------------------------------------------
+
+class TestSubsetNonOverlap(TestSubsets):
+ def setUp(self):
+ self.left = Set([1])
+ self.right = Set([2])
+ self.name = "neither empty, neither contains"
+ self.cases = ""
+
+#==============================================================================
+
+class TestOnlySetsInBinaryOps(unittest.TestCase):
+
+ def test_cmp(self):
+ try:
+ self.other < self.set
+ assert 0, "Comparison with non-set on left"
+ except TypeError:
+ pass
+ try:
+ self.set >= self.other
+ assert 0, "Comparison with non-set on right"
+ except TypeError:
+ pass
+
+ def test_union_update(self):
+ try:
+ self.set |= self.other
+ assert 0, "Union update with non-set"
+ except TypeError:
+ pass
+
+ def test_union(self):
+ try:
+ self.other | self.set
+ assert 0, "Union with non-set on left"
+ except TypeError:
+ pass
+ try:
+ self.set | self.other
+ assert 0, "Union with non-set on right"
+ except TypeError:
+ pass
+
+ def test_intersection_update(self):
+ try:
+ self.set &= self.other
+ assert 0, "Intersection update with non-set"
+ except TypeError:
+ pass
+
+ def test_intersection(self):
+ try:
+ self.other & self.set
+ assert 0, "Intersection with non-set on left"
+ except TypeError:
+ pass
+ try:
+ self.set & self.other
+ assert 0, "Intersection with non-set on right"
+ except TypeError:
+ pass
+
+ def test_sym_difference_update(self):
+ try:
+ self.set ^= self.other
+ assert 0, "Symmetric difference update with non-set"
+ except TypeError:
+ pass
+
+ def test_sym_difference(self):
+ try:
+ self.other ^ self.set
+ assert 0, "Symmetric difference with non-set on left"
+ except TypeError:
+ pass
+ try:
+ self.set ^ self.other
+ assert 0, "Symmetric difference with non-set on right"
+ except TypeError:
+ pass
+
+ def test_difference_update(self):
+ try:
+ self.set -= self.other
+ assert 0, "Symmetric difference update with non-set"
+ except TypeError:
+ pass
+
+ def test_difference(self):
+ try:
+ self.other - self.set
+ assert 0, "Symmetric difference with non-set on left"
+ except TypeError:
+ pass
+ try:
+ self.set - self.other
+ assert 0, "Symmetric difference with non-set on right"
+ except TypeError:
+ pass
+
+#------------------------------------------------------------------------------
+
+class TestOnlySetsNumeric(TestOnlySetsInBinaryOps):
+ def setUp(self):
+ self.set = Set((1, 2, 3))
+ self.other = 19
+
+#------------------------------------------------------------------------------
+
+class TestOnlySetsDict(TestOnlySetsInBinaryOps):
+ def setUp(self):
+ self.set = Set((1, 2, 3))
+ self.other = {1:2, 3:4}
+
+#------------------------------------------------------------------------------
+
+class TestOnlySetsOperator(TestOnlySetsInBinaryOps):
+ def setUp(self):
+ self.set = Set((1, 2, 3))
+ self.other = operator.add
+
+#==============================================================================
+
+class TestCopying(unittest.TestCase):
+
+ def test_copy(self):
+ dup = self.set.copy()
+ dup_list = list(dup); dup_list.sort()
+ set_list = list(self.set); set_list.sort()
+ assert len(dup_list) == len(set_list), "Unequal lengths after copy"
+ for i in range(len(dup_list)):
+ assert dup_list[i] is set_list[i], "Non-identical items after copy"
+
+ def test_deep_copy(self):
+ dup = copy.deepcopy(self.set)
+ ##print type(dup), `dup`
+ dup_list = list(dup); dup_list.sort()
+ set_list = list(self.set); set_list.sort()
+ assert len(dup_list) == len(set_list), "Unequal lengths after deep copy"
+ for i in range(len(dup_list)):
+ assert dup_list[i] == set_list[i], "Unequal items after deep copy"
+
+#------------------------------------------------------------------------------
+
+class TestCopyingEmpty(TestCopying):
+ def setUp(self):
+ self.set = Set()
+
+#------------------------------------------------------------------------------
+
+class TestCopyingSingleton(TestCopying):
+ def setUp(self):
+ self.set = Set(["hello"])
+
+#------------------------------------------------------------------------------
+
+class TestCopyingTriple(TestCopying):
+ def setUp(self):
+ self.set = Set(["zero", 0, None])
+
+#------------------------------------------------------------------------------
+
+class TestCopyingTuple(TestCopying):
+ def setUp(self):
+ self.set = Set([(1, 2)])
+
+#------------------------------------------------------------------------------
+
+class TestCopyingNested(TestCopying):
+ def setUp(self):
+ self.set = Set([((1, 2), (3, 4))])
+
+#==============================================================================
+
+def makeAllTests():
+ suite = unittest.TestSuite()
+ suite.addTest(unittest.makeSuite(TestBasicOpsEmpty))
+ suite.addTest(unittest.makeSuite(TestBasicOpsSingleton))
+ suite.addTest(unittest.makeSuite(TestBasicOpsTuple))
+ suite.addTest(unittest.makeSuite(TestBasicOpsTriple))
+ suite.addTest(unittest.makeSuite(TestBinaryOps))
+ suite.addTest(unittest.makeSuite(TestUpdateOps))
+ suite.addTest(unittest.makeSuite(TestMutate))
+ suite.addTest(unittest.makeSuite(TestSubsetEqualEmpty))
+ suite.addTest(unittest.makeSuite(TestSubsetEqualNonEmpty))
+ suite.addTest(unittest.makeSuite(TestSubsetEmptyNonEmpty))
+ suite.addTest(unittest.makeSuite(TestSubsetPartial))
+ suite.addTest(unittest.makeSuite(TestSubsetNonOverlap))
+ suite.addTest(unittest.makeSuite(TestOnlySetsNumeric))
+ suite.addTest(unittest.makeSuite(TestOnlySetsDict))
+ suite.addTest(unittest.makeSuite(TestOnlySetsOperator))
+ suite.addTest(unittest.makeSuite(TestCopyingEmpty))
+ suite.addTest(unittest.makeSuite(TestCopyingSingleton))
+ suite.addTest(unittest.makeSuite(TestCopyingTriple))
+ suite.addTest(unittest.makeSuite(TestCopyingTuple))
+ suite.addTest(unittest.makeSuite(TestCopyingNested))
+ return suite
+
+#------------------------------------------------------------------------------
+
+def test_main():
+ suite = makeAllTests()
+ test_support.run_suite(suite)
+
+if __name__ == "__main__":
+ test_main()