def test_negative_update(self):
c = CounterUpdateClause('a', 4, 7)
c.set_context_id(3)
self.assertEqual(c.get_context_size(), 1)
self.assertEqual(str(c), '"a" = "a" - %(3)s')
ctx = {}
c.update_context(ctx)
self.assertEqual(ctx, {'3': 3})
def noop_update(self):
c = CounterUpdateClause('a', 5, 5)
c.set_context_id(5)
self.assertEqual(c.get_context_size(), 1)
self.assertEqual(str(c), '"a" = "a" + %(0)s')
ctx = {}
c.update_context(ctx)
self.assertEqual(ctx, {'5': 0})
def test_positive_update(self):
c = CounterUpdateClause('a', 5, 3)
c.set_context_id(5)
self.assertEqual(c.get_context_size(), 1)
self.assertEqual(str(c), '"a" = "a" + %(5)s')
ctx = {}
c.update_context(ctx)
self.assertEqual(ctx, {'5': 2})