Create CreateTopHat contract to demonstrate like that

contracts/CreateTopHat.sol

@@ -0,0 +1,19 @@
+//SPDX-License-Identifier: MIT
+pragma solidity =0.8.19;
+
+import { IHats } from "./interfaces/hats/IHats.sol";
+
+contract CreateTopHat {
+    IHats hats;
+
+    event DeclareTopHatId(address indexed declarer, uint256 topHatId);
+
+    constructor(IHats _hats) {
+        hats = _hats;
+    }
+
+    function createTopHat(string memory _details, string memory _imageURI) public {
+        uint256 topHatId = hats.mintTopHat(msg.sender, _details, _imageURI);
+        emit DeclareTopHatId(msg.sender, topHatId);
+    }
+}

test/CreateTopHat.test.ts

@@ -0,0 +1,49 @@
+import {
+  CreateTopHat,
+  CreateTopHat__factory,
+  MockHats,
+  MockHats__factory,
+} from "../typechain-types";
+import { SignerWithAddress } from "@nomicfoundation/hardhat-ethers/signers";
+import { expect } from "chai";
+import hre from "hardhat";
+
+describe.only("CreateTopHat", () => {
+  let createTopHat: CreateTopHat;
+  let hats: MockHats;
+
+  let deployer: SignerWithAddress;
+  let dao1: SignerWithAddress;
+  let dao2: SignerWithAddress;
+
+  beforeEach(async () => {
+    [deployer, dao1, dao2] = await hre.ethers.getSigners();
+
+    hats = await new MockHats__factory(deployer).deploy();
+    createTopHat = await new CreateTopHat__factory(deployer).deploy(
+      await hats.getAddress()
+    );
+  });
+
+  it("Creates a new Top Hat with expected ID", async () => {
+    await expect(createTopHat.connect(dao1).createTopHat("", ""))
+      .to.emit(createTopHat, "DeclareTopHatId")
+      .withArgs(dao1.address, 0);
+  });
+
+  it("Creates a Top Hat from the expected address", async () => {
+    await expect(createTopHat.connect(dao2).createTopHat("", ""))
+      .to.emit(createTopHat, "DeclareTopHatId")
+      .withArgs(dao2.address, 0);
+  });
+
+  it("Creates Top Hats with sequential IDs", async () => {
+    await expect(createTopHat.connect(dao1).createTopHat("", ""))
+      .to.emit(createTopHat, "DeclareTopHatId")
+      .withArgs(dao1.address, 0);
+
+    await expect(createTopHat.connect(dao2).createTopHat("", ""))
+      .to.emit(createTopHat, "DeclareTopHatId")
+      .withArgs(dao2.address, 1);
+  });
+});