test: use hardhat-ethers for importing factories in integration tests

.changeset/spicy-kiwis-double.md

+---
+'@eth-optimism/integration-tests': patch
+---
+
+Use hardhat-ethers for importing factories in integration tests

integration-tests/actor-tests/state-dos.test.ts

-import { utils, Wallet, Contract, ContractFactory } from 'ethers'
+import { utils, Wallet, Contract } from 'ethers'
+import { ethers } from 'hardhat'
 import { actor, setupActor, run, setupRun } from './lib/convenience'
 import { OptimismEnv } from '../test/shared/env'
-import StateDOS from '../artifacts/contracts/StateDOS.sol/StateDOS.json'
 import { expect } from 'chai'
 
 interface Context {
@@ -16,11 +16,7 @@ actor('Trie DoS accounts', () => {
   setupActor(async () => {
     env = await OptimismEnv.new()
 
-    const factory = new ContractFactory(
-      StateDOS.abi,
-      StateDOS.bytecode,
-      env.l2Wallet
-    )
+    const factory = await ethers.getContractFactory('StateDOS', env.l2Wallet)
     contract = await factory.deploy()
     await contract.deployed()
   })

integration-tests/test/basic-l1-l2-communication.spec.ts

@@ -2,11 +2,10 @@ import { expect } from './shared/setup'
 
 /* Imports: External */
 import { Contract, ContractFactory } from 'ethers'
+import { ethers } from 'hardhat'
 import { applyL1ToL2Alias, awaitCondition } from '@eth-optimism/core-utils'
 
 /* Imports: Internal */
-import simpleStorageJson from '../artifacts/contracts/SimpleStorage.sol/SimpleStorage.json'
-import l2ReverterJson from '../artifacts/contracts/Reverter.sol/Reverter.json'
 import { Direction } from './shared/watcher-utils'
 import { OptimismEnv } from './shared/env'
 import { isMainnet } from './shared/utils'
@@ -22,19 +21,16 @@ describe('Basic L1<>L2 Communication', async () => {
 
   before(async () => {
     env = await OptimismEnv.new()
-    Factory__L1SimpleStorage = new ContractFactory(
-      simpleStorageJson.abi,
-      simpleStorageJson.bytecode,
+    Factory__L1SimpleStorage = await ethers.getContractFactory(
+      'SimpleStorage',
       env.l1Wallet
     )
-    Factory__L2SimpleStorage = new ContractFactory(
-      simpleStorageJson.abi,
-      simpleStorageJson.bytecode,
+    Factory__L2SimpleStorage = await ethers.getContractFactory(
+      'SimpleStorage',
       env.l2Wallet
     )
-    Factory__L2Reverter = new ContractFactory(
-      l2ReverterJson.abi,
-      l2ReverterJson.bytecode,
+    Factory__L2Reverter = await ethers.getContractFactory(
+      'Reverter',
       env.l2Wallet
     )
   })

integration-tests/test/rpc.spec.ts

@@ -18,7 +18,6 @@ import {
   TransactionReceipt,
   TransactionRequest,
 } from '@ethersproject/providers'
-import simpleStorageJson from '../artifacts/contracts/SimpleStorage.sol/SimpleStorage.json'
 
 describe('Basic RPC tests', () => {
   let env: OptimismEnv
@@ -491,9 +490,8 @@ describe('Basic RPC tests', () => {
 
   describe('debug_traceTransaction', () => {
     it('should match debug_traceBlock', async () => {
-      const storage = new ContractFactory(
-        simpleStorageJson.abi,
-        simpleStorageJson.bytecode,
+      const storage = await ethers.getContractFactory(
+        'SimpleStorage',
         env.l2Wallet
       )
       const tx = (await storage.deploy()).deployTransaction

integration-tests/test/stress-tests.spec.ts

 import { expect } from './shared/setup'
 
 /* Imports: External */
-import { Contract, ContractFactory, Wallet, utils } from 'ethers'
+import { Contract, Wallet, utils } from 'ethers'
+import { ethers } from 'hardhat'
 
 /* Imports: Internal */
 import { OptimismEnv } from './shared/env'
@@ -16,7 +17,6 @@ import {
 } from './shared/stress-test-helpers'
 
 /* Imports: Artifacts */
-import simpleStorageJson from '../artifacts/contracts/SimpleStorage.sol/SimpleStorage.json'
 import { fundUser, isLiveNetwork, isMainnet } from './shared/utils'
 
 // Need a big timeout to allow for all transactions to be processed.
@@ -60,14 +60,12 @@ describe('stress tests', () => {
   let L2SimpleStorage: Contract
   let L1SimpleStorage: Contract
   beforeEach(async () => {
-    const factory__L1SimpleStorage = new ContractFactory(
-      simpleStorageJson.abi,
-      simpleStorageJson.bytecode,
+    const factory__L1SimpleStorage = await ethers.getContractFactory(
+      'SimpleStorage',
       env.l1Wallet
     )
-    const factory__L2SimpleStorage = new ContractFactory(
-      simpleStorageJson.abi,
-      simpleStorageJson.bytecode,
+    const factory__L2SimpleStorage = await ethers.getContractFactory(
+      'SimpleStorage',
       env.l2Wallet
     )
     L1SimpleStorage = await factory__L1SimpleStorage.deploy()