Write basic unit test for DioneOracle smart contract

eth-contracts/test/DioneOracle.ts

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+import { ethers } from "hardhat";
+import { BigNumber, Contract, providers, utils } from "ethers";
+import { expect } from "chai";
+import { soliditySha3 } from "web3-utils";
+import deploy from "../common/deployment";
+
+describe("DioneOracle", function () {
+  let dioneOracle: Contract;
+
+  beforeEach(async function () {
+    const contracts = await deploy({
+      reward: 100,
+      minStake: 5000,
+      voteWindowTime: 2,
+      randomizeStake: false,
+      maxStake: 0, // don't use this deployment feature
+      actualStake: 9000,
+      nodeCount: 4
+    });
+    dioneOracle = contracts.dioneOracle;
+  });
+
+  it("should create request and cancel it", async function () {
+    const timestamp = 1625097600;
+    await ethers.provider.send("evm_setNextBlockTimestamp", [timestamp]);
+    const requestDeadline = timestamp + 300;
+    await expect(dioneOracle.requestOracles(1, "getTransaction", "bafy2bzaceaaab3kkoaocal2dzh3okzy4gscqpdt42hzrov3df6vjumalngc3g", dioneOracle.address, BigNumber.from(0x8da5cb5b)))
+      .to.emit(dioneOracle, 'NewOracleRequest')
+      .withArgs(1, "getTransaction", "bafy2bzaceaaab3kkoaocal2dzh3okzy4gscqpdt42hzrov3df6vjumalngc3g", 1, requestDeadline);
+
+    await expect(dioneOracle.cancelOracleRequest(1))
+      .to.emit(dioneOracle, 'CancelOracleRequest')
+      .withArgs(1);
+  });
+});