def test_complement(self):
subset = UnicodeSubset((50, 90, 10, 90))
self.assertEqual(list(subset.complement()),
[(0, 10), (11, 50), (51, 90), (91, sys.maxunicode + 1)])
subset.add(11)
self.assertEqual(list(subset.complement()),
[(0, 10), (12, 50), (51, 90), (91, sys.maxunicode + 1)])
subset.add((0, 10))
self.assertEqual(list(subset.complement()), [(12, 50), (51, 90), (91, sys.maxunicode + 1)])
s1 = UnicodeSubset(chain(
UNICODE_CATEGORIES['L'].codepoints,
UNICODE_CATEGORIES['M'].codepoints,
UNICODE_CATEGORIES['N'].codepoints,
UNICODE_CATEGORIES['S'].codepoints
))
s2 = UnicodeSubset(chain(
UNICODE_CATEGORIES['C'].codepoints,
UNICODE_CATEGORIES['P'].codepoints,
UNICODE_CATEGORIES['Z'].codepoints
))
self.assertEqual(s1.codepoints, UnicodeSubset(s2.complement()).codepoints)
subset = UnicodeSubset((50, 90))
subset.codepoints.append(70) # Invalid subset (unordered)
with self.assertRaises(ValueError) as ctx:
list(subset.complement())
self.assertEqual(
str(ctx.exception), "unordered code points found in UnicodeSubset('2ZF')")
subset = UnicodeSubset((sys.maxunicode - 1,))
self.assertEqual(list(subset.complement()), [(0, sys.maxunicode - 1), sys.maxunicode])
def test_modify(self):
subset = UnicodeSubset()
for cp in [50, 90, 10, 90]:
subset.add(cp)
self.assertEqual(subset, [10, 50, 90])
self.assertRaises(ValueError, subset.add, -1)
self.assertRaises(ValueError, subset.add, sys.maxunicode + 1)
subset.add((100, 20001))
subset.discard((100, 19001))
self.assertEqual(subset, [10, 50, 90, (19001, 20001)])
subset.add(0)
subset.discard(1)
self.assertEqual(subset, [0, 10, 50, 90, (19001, 20001)])
subset.discard(0)
self.assertEqual(subset, [10, 50, 90, (19001, 20001)])
subset.discard((10, 100))
self.assertEqual(subset, [(19001, 20001)])
subset.add(20)
subset.add(19)
subset.add(30)
subset.add([30, 33])
subset.add(30000)
subset.add(30001)
self.assertEqual(subset, [(19, 21), (30, 33), (19001, 20001),
(30000, 30002)])
subset.add(22)
subset.add(21)
subset.add(22)
self.assertEqual(subset, [(19, 22), 22, (30, 33), (19001, 20001),
(30000, 30002)])
subset.discard((90, 50000))
self.assertEqual(subset, [(19, 22), 22, (30, 33)])
subset.discard(21)
subset.discard(19)
self.assertEqual(subset, [20, 22, (30, 33)])
subset.discard((0, 200))
self.assertEqual(subset, [])
with self.assertRaises(ValueError):
subset.discard(None)
with self.assertRaises(ValueError):
subset.discard((10, 11, 12))