def test_combination(self):
expr = Expression([Expression(NUMERIC_VAL),
Expression(STRING_VAL)],
Expression.COMBINATION)
self.assertTrue(expr.is_combination())
self.assertEqual([Expression(NUMERIC_VAL), Expression(STRING_VAL)],
expr.fields)
def test_constant(self):
expr = Expression(NUMERIC_VAL, Expression.CONSTANT)
self.assertTrue(expr.is_constant())
self.assertFalse(expr.is_name())
self.assertFalse(expr.is_combination())
self.assertEqual(NUMERIC_VAL, expr.scalar)
def test_scalar_string(self):
expr = Expression(STRING_VAL)
self.assertFalse(expr.is_combination())
self.assertEqual(STRING_VAL, expr.scalar)
def test_name(self):
expr = Expression(STRING_VAL, Expression.NAME)
self.assertTrue(expr.is_name())
self.assertFalse(expr.is_combination())
self.assertEqual(STRING_VAL, expr.scalar)
def test_scalar(self):
expr = Expression(NUMERIC_VAL)
self.assertFalse(expr.is_combination())
self.assertTrue(expr.is_name())
self.assertEqual(NUMERIC_VAL, expr.scalar)
