def test_is_not_float(self):
value = "a*7"
result = stackdriver.as_float(value)
self.assertEqual(result[0], None)
self.assertEqual(result[1], False)
def test_as_float(self):
value = 1.5
result = stackdriver.as_float(value)
self.assertEqual(result[0], value)
self.assertEqual(result[1], True)