def setUp(self):
expressions = {
'a': Expr('2'),
'b': Expr('a*10'),
}
self.ant = ANT()
self.ns = ExpressionNamespace(expressions)
self.ns.observe('_locals', self.ant.mark_observed)
def test_extra_context(self):
random = np.random.RandomState(seed=1)
ns = ExpressionNamespace(self.EXPRESSIONS, {'random': random})
ns.set_values({'data.channel.bar': 3.1})
ns.set_value('z', 32)
values = ns.get_values()
self.assertTrue('z' in values)
self.assertTrue('data.channel.bar' in values)
self.assertEqual(values['z'], 32)
self.assertEqual(values['f'], 31)
def test_cache(self):
# We know for this particular seed that second and third call to the
# generator will not return the same value.
random = np.random.RandomState(seed=1)
ns = ExpressionNamespace(self.EXPRESSIONS, {'random': random})
initial = ns.get_value('g')
self.assertEqual(initial, ns.get_value('g'))
self.assertEqual(initial, ns.get_value('g'))
ns.reset()
self.assertNotEqual(initial, ns.get_value('g'))
def test_evaluation_override(self):
ns = ExpressionNamespace(self.EXPRESSIONS)
self.assertEqual(ns.get_value('c', {'a': 2}), 6)
self.assertEqual(ns.get_value('a', {'a': 2}), 2)
def test_evaluation(self):
ns = ExpressionNamespace(self.EXPRESSIONS)
self.assertEqual(ns.get_value('c'), 2550)
self.assertEqual(ns.get_value('e'), 20)
self.assertEqual(ns.get_value('d.x'), 10)
self.assertEqual(ns.get_value('f', {'data.channel.bar': 1.5}), 15)
