Set proper fromBlock value to avoid tests hanging on fork mode

Author: antico5

.changeset/brave-falcons-reply.md

@@ -0,0 +1,5 @@
+---
+"hardhat": patch
+---
+
+Fix example tests hanging when running on fork mode ([#6967](https://github.com/NomicFoundation/hardhat/pull/7120))

v-next/hardhat/templates/01-node-test-runner-viem/test/Counter.ts

@@ -71,6 +71,7 @@ describe("Counter", async function () {
   });
 
   it("The sum of the Increment events should match the current value", async function () {
+    const startBlockNumber = await publicClient.getBlockNumber();
     const counter = await viem.deployContract("Counter");
 
     // run a series of increments
@@ -82,7 +83,7 @@ describe("Counter", async function () {
       address: counter.address,
       abi: counter.abi,
       eventName: "Increment",
-      fromBlock: 0n,
+      fromBlock: startBlockNumber,
       strict: true,
     });
 

v-next/hardhat/templates/02-mocha-ethers/test/Counter.ts

@@ -52,6 +52,7 @@ describe("Counter", function () {
   });
 
   it("The sum of the Increment events should match the current value", async function () {
+    const startBlockNumber = await ethers.provider.getBlockNumber();
     const counter = await ethers.deployContract("Counter");
 
     // run a series of increments
@@ -61,7 +62,7 @@ describe("Counter", function () {
 
     const events = await counter.queryFilter(
       counter.filters.Increment(),
-      0,
+      startBlockNumber,
       "latest",
     );