def test_base_4096(self):
encoder = Encoder(base=4096)
self.assertEquals(encoder.digits, 2)
self.assertEquals('00', encoder.encode(0))
self.assertEquals('0R', encoder.encode(34))
self.assertEquals('R0', encoder.encode(34 * 64))
self.assertEquals('oo', encoder.encode(4095))
all_encodings = set()
for n in range(0, 4096):
encoded = encoder.encode(n)
self.assertEquals(n, encoder.decode(encoded))
all_encodings.add(encoded)
self.assertEquals(len(all_encodings), 4096)
def test_decoding_errors_base_4096(self):
encoder = Encoder(base=4096)
self.assertRaises(EncoderException, encoder.decode, 'o')
self.assertRaises(EncoderException, encoder.decode, '0AR')
self.assertRaises(EncoderException, encoder.decode, ' ')
def test_decode(self):
encoder = Encoder(base=10)
self.assertEquals(4, encoder.decode('4'))
def test_encode_decode_64(self):
encoder = Encoder(base=64)
self.assertEquals('R', encoder.encode(34))
self.assertEquals('o', encoder.encode(63))
for n in range(0, 64):
self.assertEquals(n, encoder.decode(encoder.encode(n)))
def test_encode(self):
encoder = Encoder(base=10)
self.assertEquals('4', encoder.encode(4))
def test_init_4096(self):
encoder = Encoder(base=4096)
self.assertEquals(encoder.base, 4096)
self.assertEquals(encoder.digits, 2)
def test_init_64(self):
encoder = Encoder(base=64)
self.assertEquals(encoder.base, 64)
self.assertEquals(encoder.digits, 1)
def test_init(self):
encoder = Encoder(base=24)
self.assertEquals(encoder.base, 24)
self.assertEquals(encoder.digits, 1)
from django.db import models
from cheaptrees.anybase import Encoder
encoder = Encoder()
DIGITS = encoder.digits
DEPTH = 10
class Thread(models.Model):
pass
class Node(models.Model):
thread = models.ForeignKey(Thread)
locator = models.CharField(max_length=DEPTH * DIGITS, db_index=True)
#depth = models.IntegerField(editable=False)
class Meta:
abstract = True
ordering = ['locator']
unique_together = ('thread', 'locator')
@property
def manager(self):
return self.__class__.objects
@property
def position(self):
return encoder.decode(self.locator[DIGITS:])
