Method equals

java/tests/src/main/java/tests/BaseTest.java:91–124

(Object a, Object b)

    }

    public static boolean equals(Object a, Object b) {
        if (a == b) return true;
        // one null, one not
        if (a == null || b == null) return false;

        // List deep compare
        if (a instanceof List<?> list1) {
            if (!(b instanceof List<?> list2)) return false;
            if (list1.size() != list2.size()) return false;

            for (int i = 0; i < list1.size(); i++) {
                Object item1 = list1.get(i);
                Object item2 = list2.get(i);
                if (!equals(item1, item2)) return false; // recursive
            }
            return true;
        }

        if (a instanceof Map<?, ?> map1) {
            if (!(b instanceof Map<?, ?> map2)) return false;

            for (Map.Entry<?, ?> e : map1.entrySet()) {
                Object key = e.getKey();
                if (!(key instanceof String)) {
                    return false;
                }
                if (!map2.containsKey(key)) return false;
                if (!equals(e.getValue(), map2.get(key))) return false;
            }
            return true;
        }

        return isEqual(a, b);
    }

    public static Object mod(Object a, Object b) {
        return Helpers.mod(a, b);