import assert from 'assert';

import * as test2library from '../test2library.js';

describe('Testing test2library', () => {
    describe("addTwoNumbers", () => {
        it("should return 5", () => {
            assert.equal(test2library.addTwoNumbers(2, 3), 5);
        });
        it("should return 0", () => {
            assert.equal(test2library.addTwoNumbers(0, 0), 0);
        });
        it("should return -1", () => {
            assert.equal(test2library.addTwoNumbers(-2, 0), -2);
        });
    });

    describe("subtractTwoNumbers", () => {
        it("should return 1", () => {
            assert.equal(test2library.subtractTwoNumbers(3, 2), 1);
        });
        it("should return -2", () => {
            assert.equal(test2library.subtractTwoNumbers(0, 2), -2);
        });
        it("should return 1", () => {
            assert.equal(test2library.subtractTwoNumbers(-1, -2), 1);
        });
    });

    describe("multiplyTwoNumbers", () => {
        it("should return 6", () => {
            assert.equal(test2library.multiplyTwoNumbers(2, 3), 6);
        });
        it("should return 0", () => {
            assert.equal(test2library.multiplyTwoNumbers(0, 2), 0);
        });
        it("should return 2", () => {
            assert.equal(test2library.multiplyTwoNumbers(-1, -2), 2);
        });
    });

    describe("divideTwoNumbers", () => {
        it("should return 2", () => {
            assert.equal(test2library.divideTwoNumbers(6, 3), 2);
        });
        it("should return 0", () => {
            assert.equal(test2library.divideTwoNumbers(0, 2), 0);
        });
        it("should throw an error", () => {
            assert.throws(() => test2library.divideTwoNumbers(1, 0), Error);
        });
    });

    describe("squareNumber", () => {
        it("should return 4", () => {
            assert.equal(test2library.squareNumber(2), 4);
        });
        it("should return 0", () => {
            assert.equal(test2library.squareNumber(0), 0);
        });
        it("should return 1", () => {
            assert.equal(test2library.squareNumber(-1), 1);
        });
    });
});