def test_basic(self):
c = gatelogic.Controller()
egress = gatelogic.ComputableHub(c)
hub = gatelogic.QueryHub(c)
def action():
if hub.get('item').value == None:
return None
return hub.get('item').value + 1
egress.maintain('1', action)
self.assertEqual(hub.keys(), ['item'])
self.assertEqual(egress.keys(), ['1'])
self.assertTrue(hub.get('item').value is None)
self.assertTrue(egress.get('1').value is None)
hub.get('item').value = 41
self.assertTrue(hub.get('item').value is 41)
self.assertTrue(egress.get('1').value is 42)
# test GC
egress.unmaintain('1')
self.assertTrue(c.is_empty())
def test_dynamic(self):
c = gatelogic.Controller()
egress = gatelogic.ComputableHub(c)
hub = gatelogic.QueryHub(c)
def action():
if hub.get('one').value:
if hub.get('two').value:
return 'a'
return hub.get('three').value
egress.maintain('1', action)
self.assertEqual(hub.keys(), ['three', 'one'])
self.assertEqual(egress.keys(), ['1'])
self.assertEqual(egress.get('1').value, None)
hub.get('one').value = True
self.assertEqual(hub.keys(), ['three', 'two','one'])
self.assertEqual(egress.get('1').value, None)
hub.get('two').value = True
self.assertEqual(hub.keys(), ['two', 'one'])
self.assertEqual(egress.get('1').value, 'a')
egress.unmaintain('1')
self.assertTrue(c.is_empty())
def test_update_conflict(self):
c = gatelogic.Controller()
egress = gatelogic.ComputableHub(c)
hub = gatelogic.QueryHub(c)
def action():
if hub.get('item0').value == None:
hub.get('item1').value
hub.get('item2').value
return None
return hub.get('item0').value + 1
egress.maintain('1', action)
self.assertEqual(set(hub.keys()), set(['item1', 'item2', 'item0']))
self.assertEqual(egress.keys(), ['1'])
self.assertTrue(hub.get('item0').value is None)
self.assertTrue(hub.get('item1').value is None)
self.assertTrue(hub.get('item2').value is None)
self.assertTrue(egress.get('1').value is None)
# Failure of this test depends on the order of sets:
# >>> set(['item0', 'item1', 'item2', 'other'])
# set(['item2', 'item0', 'item1', 'other'])
hub.update({'item0':1, 'item1':1, 'item2': 2, 'other':3})
self.assertEqual(hub.keys(), ['item0'])
self.assertEqual(egress.keys(), ['1'])
self.assertTrue(egress.get('1').value is 2)
egress.unmaintain('1')
self.assertTrue(c.is_empty())
def test_two_layers(self):
c = gatelogic.Controller()
egress = gatelogic.ComputableHub(c)
mid = gatelogic.ComputableHub(c)
hub = gatelogic.QueryHub(c)
def action1():
if hub.get('one').value:
if hub.get('two').value:
return 'a'
return 'b'
def action2():
if hub.get('three').value:
return '%s-%s' % (hub.get('three').value, mid.get('1').value)
return 'c'
mid.maintain('1', action1)
egress.maintain('2', action2)
self.assertEqual(hub.keys(), ['three', 'one'])
self.assertEqual(mid.keys(), ['1'])
self.assertEqual(egress.keys(), ['2'])
hub.get('one').value = True
self.assertEqual(hub.keys(), ['three', 'two','one'])
self.assertEqual(mid.get('1').value, 'b')
self.assertEqual(egress.get('2').value, 'c')
hub.get('three').value = 'x'
self.assertEqual(hub.keys(), ['three', 'two','one'])
self.assertEqual(mid.get('1').value, 'b')
self.assertEqual(egress.get('2').value, 'x-b')
hub.get('two').value = True
self.assertEqual(hub.keys(), ['three', 'two', 'one'])
self.assertEqual(mid.get('1').value, 'a')
self.assertEqual(egress.get('2').value, 'x-a')
egress.unmaintain('2')
self.assertFalse(c.is_empty())
egress.maintain('2', action2)
mid.unmaintain('1')
self.assertFalse(c.is_empty())
egress.unmaintain('2')
self.assertTrue(c.is_empty())
def test_forever(self):
c = gatelogic.Controller()
egress = gatelogic.ComputableHub(c)
hub = gatelogic.QueryHub(c)
def action():
r = hub.get('1').value or 0
g = egress.get('1').value or 0
return r + g
egress.maintain('1', action)
with self.assertRaises(RuntimeError):
hub.get('1').value = 41
def test_no_recount(self):
c = gatelogic.Controller()
egress = gatelogic.ComputableHub(c)
hub = gatelogic.QueryHub(c)
counter = [0]
def action():
counter[0] += 1
if hub.get('item').value == None:
return None
return hub.get('item').value + 1
self.assertEqual(counter[0], 0)
egress.maintain('1', action)
self.assertEqual(counter[0], 1)
hub.get('item').value = 41
self.assertEqual(counter[0], 2)
hub.get('item').value = 41
self.assertEqual(counter[0], 2)
'''
Simple example. To run:
../venv/bin/python example1.py
And observe the printed values. That's it.
'''
import gatelogic
c = gatelogic.Controller()
ingress = gatelogic.ReadableHub(c)
hub = gatelogic.QueryHub(c)
egress = gatelogic.ComputableHub(c)
def action(cell):
v = cell.value
if v == None:
return
return (hub.get(v).value or 1) * (hub.get(v).value or 1)
def ensure_map(_, kind, key, cell):
if kind == 'add':
egress.maintain(key, action, cell)
if kind == 'delete':
egress.unmaintain(key)