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-rw-r--r--tests/test_issue24.py156
1 files changed, 156 insertions, 0 deletions
diff --git a/tests/test_issue24.py b/tests/test_issue24.py
new file mode 100644
index 0000000..7d51e34
--- /dev/null
+++ b/tests/test_issue24.py
@@ -0,0 +1,156 @@
+import unittest
+
+from immutables.map import Map as PyMap, map_bitcount
+
+
+class CollisionKey:
+ def __hash__(self):
+ return 0
+
+
+class Issue24Base:
+ Map = None
+
+ def test_issue24(self):
+ keys = range(27)
+ new_entries = dict.fromkeys(keys, True)
+ m = self.Map(new_entries)
+ self.assertTrue(17 in m)
+ with m.mutate() as mm:
+ for i in keys:
+ del mm[i]
+ self.assertEqual(len(mm), 0)
+
+ def dump_check_node_kind(self, header, kind):
+ header = header.strip()
+ self.assertTrue(header.strip().startswith(kind))
+
+ def dump_check_node_size(self, header, size):
+ node_size = header.split('size=', 1)[1]
+ node_size = int(node_size.split(maxsplit=1)[0])
+ self.assertEqual(node_size, size)
+
+ def dump_check_bitmap_count(self, header, count):
+ header = header.split('bitmap=')[1]
+ bitmap = int(header.split(maxsplit=1)[0], 0)
+ self.assertEqual(map_bitcount(bitmap), count)
+
+ def dump_check_bitmap_node_count(self, header, count):
+ self.dump_check_node_kind(header, 'Bitmap')
+ self.dump_check_node_size(header, count * 2)
+ self.dump_check_bitmap_count(header, count)
+
+ def dump_check_collision_node_count(self, header, count):
+ self.dump_check_node_kind(header, 'Collision')
+ self.dump_check_node_size(header, 2 * count)
+
+ def test_bitmap_node_update_in_place_count(self):
+ keys = range(7)
+ new_entries = dict.fromkeys(keys, True)
+ m = self.Map(new_entries)
+ d = m.__dump__().splitlines()
+ self.assertTrue(d)
+ if d[0].startswith('HAMT'):
+ header = d[1] # skip _map.Map.__dump__() header
+ else:
+ header = d[0]
+ self.dump_check_bitmap_node_count(header, 7)
+
+ def test_bitmap_node_delete_in_place_count(self):
+ keys = range(7)
+ new_entries = dict.fromkeys(keys, True)
+ m = self.Map(new_entries)
+ with m.mutate() as mm:
+ del mm[0], mm[2], mm[3]
+ m2 = mm.finish()
+ d = m2.__dump__().splitlines()
+ self.assertTrue(d)
+ if d[0].startswith('HAMT'):
+ header = d[1] # skip _map.Map.__dump__() header
+ else:
+ header = d[0]
+ self.dump_check_bitmap_node_count(header, 4)
+
+ def test_collision_node_update_in_place_count(self):
+ keys = (CollisionKey() for i in range(7))
+ new_entries = dict.fromkeys(keys, True)
+ m = self.Map(new_entries)
+ d = m.__dump__().splitlines()
+ self.assertTrue(len(d) > 3)
+ # get node headers
+ if d[0].startswith('HAMT'):
+ h1, h2 = d[1], d[3] # skip _map.Map.__dump__() header
+ else:
+ h1, h2 = d[0], d[2]
+ self.dump_check_node_kind(h1, 'Bitmap')
+ self.dump_check_collision_node_count(h2, 7)
+
+ def test_collision_node_delete_in_place_count(self):
+ keys = [CollisionKey() for i in range(7)]
+ new_entries = dict.fromkeys(keys, True)
+ m = self.Map(new_entries)
+ with m.mutate() as mm:
+ del mm[keys[0]], mm[keys[2]], mm[keys[3]]
+ m2 = mm.finish()
+ d = m2.__dump__().splitlines()
+ self.assertTrue(len(d) > 3)
+ # get node headers
+ if d[0].startswith('HAMT'):
+ h1, h2 = d[1], d[3] # skip _map.Map.__dump__() header
+ else:
+ h1, h2 = d[0], d[2]
+ self.dump_check_node_kind(h1, 'Bitmap')
+ self.dump_check_collision_node_count(h2, 4)
+
+
+try:
+ from immutables._map import Map as CMap
+except ImportError:
+ CMap = None
+
+
+class Issue24PyTest(Issue24Base, unittest.TestCase):
+ Map = PyMap
+
+
+@unittest.skipIf(CMap is None, 'C Map is not available')
+class Issue24CTest(Issue24Base, unittest.TestCase):
+ Map = CMap
+
+ def hamt_dump_check_first_return_second(self, m):
+ d = m.__dump__().splitlines()
+ self.assertTrue(len(d) > 2)
+ self.assertTrue(d[0].startswith('HAMT'))
+ return d[1]
+
+ def test_array_node_update_in_place_count(self):
+ keys = range(27)
+ new_entries = dict.fromkeys(keys, True)
+ m = self.Map(new_entries)
+ header = self.hamt_dump_check_first_return_second(m)
+ self.dump_check_node_kind(header, 'Array')
+ for i in range(2, 18):
+ m = m.delete(i)
+ header = self.hamt_dump_check_first_return_second(m)
+ self.dump_check_bitmap_node_count(header, 11)
+
+ def test_array_node_delete_in_place_count(self):
+ keys = range(27)
+ new_entries = dict.fromkeys(keys, True)
+ m = self.Map(new_entries)
+ header = self.hamt_dump_check_first_return_second(m)
+ self.dump_check_node_kind(header, 'Array')
+ with m.mutate() as mm:
+ for i in range(5):
+ del mm[i]
+ m2 = mm.finish()
+ header = self.hamt_dump_check_first_return_second(m2)
+ self.dump_check_node_kind(header, 'Array')
+ for i in range(6, 17):
+ m2 = m2.delete(i)
+ header = self.hamt_dump_check_first_return_second(m2)
+ self.dump_check_bitmap_node_count(header, 11)
+
+
+if __name__ == '__main__':
+ unittest.main()