Router.test.js

it("multi-hop swap A -> B -> C", async function () {
    const { owner, tokenA, tokenB, router, factory } = await deployAll();

    // Dodajemy trzeci token
    const ERC20Mock = await ethers.getContractFactory("ERC20Mock");
    const tokenC = await ERC20Mock.deploy("TokenC", "TKC");
    await tokenC.mint(owner.address, ethers.parseEther("100000"));
    await tokenC.approve(router.address, ethers.MaxUint256);

    // Tworzymy pary
    await router.addLiquidity(tokenA.target, tokenB.target, ethers.parseEther("1000"), ethers.parseEther("1000"), owner.address);
    await router.addLiquidity(tokenB.target, tokenC.target, ethers.parseEther("1000"), ethers.parseEther("1000"), owner.address);

    // Multi-hop A -> B -> C
    await router.swapExactTokensForTokensMulti(
        ethers.parseEther("100"),
        0,
        [tokenA.target, tokenB.target, tokenC.target],
        owner.address
    );

    expect(await tokenC.balanceOf(owner.address)).to.be.gt(ethers.parseEther("99000"));
});