Function null_literal

nodedb-query/src/expr_parse/parser.rs:579–583

()

    #[test]
    fn null_literal() {
        let (expr, _) = parse_ok("COALESCE(x, NULL, 0)");
        let doc = Value::from(serde_json::json!({"x": null}));
        assert_eq!(expr.eval(&doc), Value::Integer(0));
    }

    #[test]
    fn nested_functions() {