Add logs count in transaction receipt tests. (#5352) (#3803)

tests/EvmAcceptanceTests/contracts/Event.sol

@@ -9,9 +9,12 @@ contract Event {
     event Log(address indexed sender, string message);
     event AnotherLog();
 
-    function test() public {
+    function one_log() public {
+        emit Log(msg.sender, "Hello World!");
+    }
+
+    function two_logs() public {
         emit Log(msg.sender, "Hello World!");
-        emit Log(msg.sender, "Hello EVM!");
         emit AnotherLog();
     }
 }

tests/EvmAcceptanceTests/test/EventsLogs.ts

@@ -0,0 +1,29 @@
+import {expect} from "chai";
+import {Contract} from "ethers";
+import hre, {ethers} from "hardhat";
+
+const FUND = ethers.utils.parseUnits("1", "gwei");
+
+async function getFee(hash: string) {
+  const res = await ethers.provider.getTransactionReceipt(hash);
+  return res.gasUsed.mul(res.effectiveGasPrice);
+}
+
+describe("Events and logs #parallel", function () {
+  let contract: Contract;
+  before(async function () {
+    contract = await hre.deployContract("Event");
+  });
+
+  it("Should return 1 log whenever a function with one event is called @block-1", async function () {
+    const tx = await contract.one_log();
+    const receipt = await ethers.provider.getTransactionReceipt(tx.hash);
+    expect(receipt.logs.length).to.be.eq(1);
+  });
+
+  it("Should return 2 logs whenever a function with two events is called @block-1", async function () {
+    const tx = await contract.two_logs();
+    const receipt = await ethers.provider.getTransactionReceipt(tx.hash);
+    expect(receipt.logs.length).to.be.eq(2);
+  });
+});