def test_get_actions(self):
h = TextHistory()
h.insert('a')
h.insert('bc')
h.replace('B', pos=1)
h.delete(pos=0, length=1)
self.assertEqual('Bc', h.text)
actions = h.get_actions(1)
self.assertEqual(3, len(actions))
insert, replace, delete = actions
self.assertIsInstance(insert, InsertAction)
self.assertIsInstance(replace, ReplaceAction)
self.assertIsInstance(delete, DeleteAction)
# insert
self.assertEqual(1, insert.from_version)
self.assertEqual(2, insert.to_version)
self.assertEqual('bc', insert.text)
self.assertEqual(1, insert.pos)
# replace
self.assertEqual(2, replace.from_version)
self.assertEqual(3, replace.to_version)
self.assertEqual('B', replace.text)
self.assertEqual(1, replace.pos)
# delete
self.assertEqual(3, delete.from_version)
self.assertEqual(4, delete.to_version)
self.assertEqual(0, delete.pos)
self.assertEqual(1, delete.length)
def test_optimized_delete(self):
h = TextHistory()
h.insert('ABCCDEEE')
h.delete(2, 2)
h.delete(2, 3)
self.assertEqual('ABE', h.text)
self.assertEqual(2, len(h.get_actions()))
def test_delete(self):
h = TextHistory()
self.assertEqual(1, h.insert('abc xyz'))
self.assertEqual(2, h.delete(pos=1, length=2))
self.assertEqual('a xyz', h.text)
self.assertEqual(2, h.version)
self.assertEqual(3, h.delete(pos=3, length=0))
self.assertEqual('a xyz', h.text)
self.assertEqual(3, h.version)
def test_optimize_delete(self):
h = TextHistory()
h.insert('abcdefg')
h.delete(2, 2)
h.delete(2, 1)
actions = h.get_actions()
self.assertEqual(2, len(h.get_actions()))
insert, delete = actions
self.assertIsInstance(insert, InsertAction)
self.assertIsInstance(delete, DeleteAction)
def test_optimise_del(self):
h = TextHistory()
h.insert('abcdefgh')
h.delete(2, 2)
h.delete(2, 3)
actions = h.get_actions()
self.assertEqual(2, len(actions))
th = TextHistory()
for act in actions:
th.action(act)
self.assertEqual(h.text, th.text)
def test_delete_opt(self):
h = TextHistory()
h.insert('a1b2c3d4e5f6g7h8')
self.assertEqual('a1b2c3d4e5f6g7h8', h.text)
h.delete(pos=3, length=2)
self.assertEqual('a1b3d4e5f6g7h8', h.text)
h.delete(pos=3, length=6)
self.assertEqual('a1b6g7h8', h.text)
actions = h.get_actions(1)
self.assertEqual(1, len(actions))
action = actions[0]
self.assertIsInstance(action, DeleteAction)
opt_value = DeleteAction(3, 8, 1, 3)
self.assertEqual(action.__dict__, opt_value.__dict__)
def test_get_actions_insert_delete_optimization(self):
h = TextHistory()
h.insert(text="abdc")
h.delete(pos=1, length=2)
self.assertEqual(h.text, "ac")
all_actions = h.get_actions()
self.assertEqual(len(all_actions), 1)
insert = all_actions[0]
self.assertIsInstance(insert, InsertAction)
self.assertEqual(insert.text, "ac")
def test_get_optimized_actions__merge_delete(self):
h = TextHistory()
h.insert('0123456789')
h.delete(3, 2)
h.delete(3, 3)
h.delete(2, 1)
self.assertEqual('0189', h.text)
actions = h.get_actions(optimize=True)
self.assertEqual(2, len(actions))
insert, delete = actions
self.assertIsInstance(insert, InsertAction)
self.assertIsInstance(delete, DeleteAction)
self.assertEqual(4, delete.to_version)
self.assertEqual(1, delete.from_version)
self.assertEqual(2, delete.pos)
self.assertEqual(6, delete.length)
def test_get_actions__optimyze_1(self):
h = TextHistory()
h.insert('a')
h.insert('b')
h.delete(0, 1)
h.delete(0, 1)
h.replace("abc")
actions = h.get_actions()
self.assertEqual(3, len(actions))
insert, delete, replace = actions
self.assertIsInstance(insert, InsertAction)
self.assertIsInstance(delete, DeleteAction)
self.assertIsInstance(replace, ReplaceAction)
# insert
self.assertEqual(0, insert.from_version)
self.assertEqual(2, insert.to_version)
self.assertEqual("ab", insert.text)
#delete
self.assertEqual(2, delete.from_version)
self.assertEqual(4, delete.to_version)
self.assertEqual(2, delete.length)
def test_get_actions_insert_optimization(self):
h = TextHistory()
h.insert(text="abc")
h.insert(text="d")
h.delete(pos=0, length=2)
h.insert(text="abdc")
h.insert(text="d")
all_actions = h.get_actions()
self.assertEqual(3, len(all_actions))
insert1, delete, insert2 = all_actions
self.assertIsInstance(insert1, InsertAction)
self.assertIsInstance(delete, DeleteAction)
self.assertIsInstance(insert2, InsertAction)
self.assertEqual(insert1.text, "abcd")
self.assertEqual(insert2.text, "abdcd")
self.assertEqual(insert1.pos, 0)
self.assertEqual(insert2.pos, 2)
self.assertEqual(h.text, "cdabdcd")
def test_delete__bad(self):
h = TextHistory()
self.assertEqual(1, h.insert('abc'))
with self.assertRaises(ValueError):
h.delete(pos=10, length=2)
with self.assertRaises(ValueError):
h.delete(pos=1, length=3)
with self.assertRaises(ValueError):
h.delete(pos=-1, length=2)
def test_delete(self):
h = TextHistory()
h.insert('abcdefgh')
h.delete(pos=1, length=2)
h.delete(pos=1, length=1)
