Function test_between_nullability

datafusion/expr/src/expr_schema.rs:830–851

()

    #[test]
    fn test_between_nullability() {
        let get_schema = |nullable| {
            MockExprSchema::new()
                .with_data_type(DataType::Int32)
                .with_nullable(nullable)
        };

        let expr = col("foo").between(lit(1), lit(2));
        assert!(!expr.nullable(&get_schema(false)).unwrap());
        assert!(expr.nullable(&get_schema(true)).unwrap());

        let null = lit(ScalarValue::Int32(None));

        let expr = col("foo").between(null.clone(), lit(2));
        assert!(expr.nullable(&get_schema(false)).unwrap());

        let expr = col("foo").between(lit(1), null.clone());
        assert!(expr.nullable(&get_schema(false)).unwrap());

        let expr = col("foo").between(null.clone(), null);
        assert!(expr.nullable(&get_schema(false)).unwrap());
    }

    fn assert_nullability(expr: &Expr, schema: &dyn ExprSchema, expected: bool) {
        assert_eq!(