Introduces forking via integration tests

.circleci/config.yml

@@ -26,6 +26,23 @@ jobs:
       - run: npx hardhat compile --optimizer --fail-oversize
       - run: rm -rf build # force a clean build
       - run: npx hardhat compile --use-ovm --optimizer --fail-oversize
+  job-fork-tests:
+    working_directory: ~/repo
+    docker:
+      - image: synthetixio/docker-node:14.16-focal
+        auth:
+          username: $DOCKERHUB_USERNAME
+          password: $DOCKERHUB_TOKEN
+    steps:
+      - checkout
+      - attach_workspace:
+          at: .
+      - run:
+          command: npm run fork
+          background: true
+      - cmd-wait-for-port:
+          port: 8545
+      - run: npx hardhat test:integration:l1 --compile --deploy --fork
   job-integration-tests:
     working_directory: ~/repo
     machine:
@@ -63,7 +80,7 @@ jobs:
       - run:
           name: Run isolated layer 1 integration tests
           command: |
-            npx hardhat test:integration:l1 --compile --deploy
+            npx hardhat test:integration:l1 --compile --deploy --provider-port 9545
       - run:
           name: Run isolated layer 2 integration tests
           command: |
@@ -178,8 +195,8 @@ jobs:
             git clone git@github.com:ethereum-optimism/optimism.git
             cd optimism
             git fetch
-            git checkout develop
-            git pull origin develop
+            git checkout master
+            git pull origin master
             yarn
             yarn build
             cd ops
@@ -410,6 +427,9 @@ workflows:
       - job-test-deploy-script:
           requires:
             - job-prepare
+      - job-fork-tests:
+          requires:
+            - job-prepare
       - job-integration-tests:
           requires:
             - job-prepare

.circleci/src/jobs/job-fork-tests.yml

@@ -0,0 +1,12 @@
+# Starts a fork of mainnet, deploys the latest release, and runs L1 integration tests
+{{> job-header.yml}}
+steps:
+  - checkout
+  - attach_workspace:
+      at: .
+  - run:
+      command: npm run fork
+      background: true
+  - cmd-wait-for-port:
+        port: 8545
+  - run: npx hardhat test:integration:l1 --compile --deploy --fork

.circleci/src/jobs/job-integration-tests.yml

@@ -32,7 +32,7 @@ steps:
   - run:
       name: Run isolated layer 1 integration tests
       command: |
-        npx hardhat test:integration:l1 --compile --deploy
+        npx hardhat test:integration:l1 --compile --deploy --provider-port 9545
   - run:
       name: Run isolated layer 2 integration tests
       command: |

.circleci/src/jobs/job-prod-tests-ovm.yml

@@ -11,8 +11,8 @@ steps:
         git clone git@github.com:ethereum-optimism/optimism.git
         cd optimism
         git fetch
-        git checkout develop
-        git pull origin develop
+        git checkout master
+        git pull origin master
         yarn
         yarn build
         cd ops

.circleci/src/workflows/workflow-all.yml

@@ -24,6 +24,12 @@ jobs:
   - job-test-deploy-script:
       {{> require-prepare.yml}}
 
+  # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  # Fork tests
+  # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  - job-fork-tests:
+      {{> require-prepare.yml}}
+
   # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   # Integration tests
   # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

hardhat/tasks/task-test-integration-l1.js

@@ -1,13 +1,18 @@
 const { task } = require('hardhat/config');
-const { compileInstance, deployInstance } = require('../../test/integration/utils/deploy');
+const {
+	compileInstance,
+	prepareDeploy,
+	deployInstance,
+} = require('../../test/integration/utils/deploy');
 
 task('test:integration:l1', 'run isolated layer 1 production tests')
 	.addFlag('compile', 'Compile an l1 instance before running the tests')
 	.addFlag('deploy', 'Deploy an l1 instance before running the tests')
+	.addFlag('fork', 'Run the tests against a fork of mainnet')
 	.addOptionalParam(
 		'providerPort',
 		'The target port for the running local chain to test on',
-		'9545'
+		'8545'
 	)
 	.setAction(async (taskArguments, hre) => {
 		hre.config.paths.tests = './test/integration/l1/';
@@ -19,6 +24,7 @@ task('test:integration:l1', 'run isolated layer 1 production tests')
 		hre.config.mocha.timeout = timeout;
 		hre.config.mocha.bail = false;
 		hre.config.networks.localhost.timeout = timeout;
+		hre.config.fork = taskArguments.fork;
 
 		taskArguments.maxMemory = true;
 
@@ -27,7 +33,19 @@ task('test:integration:l1', 'run isolated layer 1 production tests')
 		}
 
 		if (taskArguments.deploy) {
-			await deployInstance({ useOvm: false, providerUrl, providerPort });
+			if (taskArguments.fork) {
+				await prepareDeploy({ network: 'mainnet' });
+				await deployInstance({
+					useFork: true,
+					network: 'mainnet',
+					useOvm: false,
+					freshDeploy: false,
+					providerUrl,
+					providerPort,
+				});
+			} else {
+				await deployInstance({ useOvm: false, providerUrl, providerPort });
+			}
 		}
 
 		await hre.run('test', taskArguments);