BT-564 map topic to string

contracts/TopicIdMapping.sol

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+// SPDX-License-Identifier: GPL-3.0
+pragma solidity 0.8.17;
+
+import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
+
+/// @notice This contract is used to map a claim topic id to its name
+/** @dev this contract stores and returns the names for different topics
+*/
+contract TopicIdMapping is Ownable {
+    mapping(uint256 => string) public topicToName;
+
+    /// @notice Saves the name for a given topic
+    function setTopicName(
+        uint256 _topic,
+        string memory _name
+    ) external onlyOwner {
+        topicToName[_topic] = _name;
+    }
+
+    /// @notice Returns the name for a given topic
+    function getTopicName(
+        uint256 _topic
+    ) external view returns (string memory _name) {
+        return topicToName[_topic];
+    }
+}

test/topic-id-mapping/topic-id-mapping.test.ts

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+import { ethers } from "hardhat";
+import { expect } from "chai";
+
+describe("TopicIdMapping", () => {
+    const TEST_TOPIC_ID = 10101000100000;
+    const TEST_TOPIC_NAME = "INDIVIDUAL_INVESTOR";
+
+  it("should deploy", async () => {
+   await ethers.getSigners();
+    const topicIdMapping = await ethers.deployContract("TopicIdMapping", []);
+    await expect(topicIdMapping.deployed()).to.eventually.be.ok;
+  });
+
+  it("deployer should be owner", async () => {
+    const [deployerWallet] = await ethers.getSigners();
+    const topicIdMapping = await ethers.deployContract("TopicIdMapping", []);
+    await expect(topicIdMapping.owner()).to.eventually.equal(
+      deployerWallet.address
+    );
+  });
+
+  it("only owner can add/modify topic", async () => {
+    const [deployerWallet, otherWallet] = await ethers.getSigners();
+    const topicIdMapping = await ethers.deployContract("TopicIdMapping", []);
+    await expect(
+      topicIdMapping.connect(otherWallet).setTopicName(TEST_TOPIC_ID, TEST_TOPIC_NAME)
+    ).to.be.revertedWith("Ownable: caller is not the owner");
+
+    await expect(
+      topicIdMapping
+        .connect(deployerWallet)
+        .setTopicName(TEST_TOPIC_ID, TEST_TOPIC_NAME)
+    ).to.be.ok;
+  });
+
+  it("should set and get topic content correctly", async () => {
+    const [deployerWallet] = await ethers.getSigners();
+    const topicIdMapping = await ethers.deployContract("TopicIdMapping", []);
+    await topicIdMapping
+      .connect(deployerWallet)
+      .setTopicName(TEST_TOPIC_ID, TEST_TOPIC_NAME);
+    await expect(
+      topicIdMapping.getTopicName(TEST_TOPIC_ID)
+    ).to.eventually.equal(TEST_TOPIC_NAME);
+  });
+});