multiply.test.ts

import { describe, it } from "node:test";
import { strict as assert } from "node:assert";

import { multiply } from "./multiply.ts";

describe("multiply", () => {
    it("should return the product of two positive numbers", () => {
        assert.equal(multiply(3, 4), 12);
    });

    it("should handle negative numbers correctly", () => {
        assert.equal(multiply(-2, 5), -10);
        assert.equal(multiply(-3, -7), 21);
    });

    it("should return zero when one operand is zero", () => {
        assert.equal(multiply(0, 10), 0);
        assert.equal(multiply(7, 0), 0);
    });
});