Initial commit

backend/test/MyContract.test.js

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+const { expect } = require("chai");
+const { ethers } = require("hardhat");
+
+describe("MyContract", function () {
+  let myContract;
+  let owner;
+  let addr1;
+  let addr2;
+
+  beforeEach(async function () {
+    // Получаем аккаунты из Hardhat
+    [owner, addr1, addr2] = await ethers.getSigners();
+
+    // Деплоим контракт
+    const MyContract = await ethers.getContractFactory("MyContract");
+    myContract = await MyContract.deploy();
+    await myContract.deployed();
+  });
+
+  describe("Deployment", function () {
+    it("Should set the right owner", async function () {
+      expect(await myContract.owner()).to.equal(owner.address);
+    });
+  });
+
+  describe("Transactions", function () {
+    it("Should allow owner to set new owner", async function () {
+      await myContract.setOwner(addr1.address);
+      expect(await myContract.owner()).to.equal(addr1.address);
+    });
+
+    it("Should fail if non-owner tries to set new owner", async function () {
+      // Подключаемся к контракту от имени addr1
+      const contractConnectedToAddr1 = myContract.connect(addr1);
+      
+      // Ожидаем, что транзакция будет отменена
+      await expect(
+        contractConnectedToAddr1.setOwner(addr2.address)
+      ).to.be.revertedWith("Only owner can call this function");
+    });
+  });
+});