/*
 * Copyright (c) 2023-2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

function test_plus(): void {
    assert new BigInt(10).operatorAdd(new BigInt(20)) == 30n;
    assert new BigInt(1000).operatorAdd(new BigInt(10)) == 1010n;
    assert new BigInt(-10).operatorAdd(new BigInt(9)) == -1n;
    assert new BigInt(-10).operatorAdd(new BigInt(10)) == 0n;
    assert new BigInt(-100).operatorAdd(new BigInt(10)) == -90n;
    assert new BigInt(100).operatorAdd(new BigInt(10)) == 110n;
    assert new BigInt(65535).operatorAdd(new BigInt(65535))  == 131070n;
    assert new BigInt(65500).operatorAdd(new BigInt(1)) == (65501n);
    assert new BigInt(65500).operatorAdd(new BigInt(-1)) == (65499n);
    assert new BigInt(-65500).operatorAdd(new BigInt(-1)) == (-65501n);
    assert new BigInt(-65500).operatorAdd(new BigInt(1)) == (-65499n);
    assert new BigInt(-65500).operatorAdd(new BigInt(100000)) == (34500n);
    assert new BigInt(100).operatorAdd(new BigInt(0)) == (100n);
    assert new BigInt(-100).operatorAdd(new BigInt(0)) == (-100n);
    assert new BigInt(-10).operatorAdd(new BigInt(-10)) == (-20n);
}

function test_addition_1(): void {
    const a = 97567789101304567800013210071n
    const b = -533923234343411557221n
    const c = 0n;

    /* Minus testing (-) */
    assert (-a == -97567789101304567800013210071n)
    assert (-b == 533923234343411557221n)
    assert (-c == -0n)
    assert (-(-a) == a)
    assert (-(-b) == b)
    assert (-(-c) == c)

    /* Plus testing (+) */
    assert +a == a
    assert +b == b
    assert +c == 0n
}

function test_addition_2(): void {
    const a = 18446744073709551616n;
    const b = 36893488147419103232n;
    const c = -10000000000000000000n;
    /* Addition testing (+) */
    assert 999999999999999n + 1n == 1000000000000000n
    assert a + b == 55340232221128654848n
    assert a + a == b
    assert a + c == 8446744073709551616n
    assert a + b + b == 92233720368547758080n
}

function main() {
    test_plus()
    test_addition_1()
    test_addition_2()
}