fix: Parse instance deployed event

yarn-project/circuits.js/fixtures/ContractInstanceDeployedEventData.hex

@@ -0,0 +1 @@
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

yarn-project/circuits.js/src/contract/contract_instance_deployed_event.test.ts

@@ -0,0 +1,13 @@
+import { getSampleContractInstanceDeployedEventPayload } from '../tests/fixtures.js';
+import { ContractInstanceDeployedEvent } from './contract_instance_deployed_event.js';
+
+describe('ContractInstanceDeployedEvent', () => {
+  it('parses an event as emitted by the ClassInstanceDeployer', () => {
+    const data = getSampleContractInstanceDeployedEventPayload();
+    const event = ContractInstanceDeployedEvent.fromLogData(data);
+    expect(event.address.toString()).toEqual('0x173b1e288f0f29f945ffa7b4ec2b69393e32b78501d0f193288e4a886a9f6e18');
+    expect(event.contractClassId.toString()).toEqual(
+      '0x0798434d6f2adf997c4fe3d14cb8468aa3cbf7a70d8c499c3c775fc8feff6796',
+    );
+  });
+});

yarn-project/circuits.js/src/contract/contract_instance_deployed_event.ts

@@ -34,7 +34,7 @@ export class ContractInstanceDeployedEvent {
     const salt = reader.readObject(Fr);
     const contractClassId = reader.readObject(Fr);
     const initializationHash = reader.readObject(Fr);
-    const portalContractAddress = reader.readObject(EthAddress);
+    const portalContractAddress = EthAddress.fromField(reader.readObject(Fr));
     const publicKeysHash = reader.readObject(Fr);
     const universalDeploy = reader.readObject(Fr).toBool();
 

yarn-project/circuits.js/src/tests/fixtures.ts

@@ -19,6 +19,12 @@ export function getSampleContractClassRegisteredEventPayload(): Buffer {
   return Buffer.from(readFileSync(path).toString(), 'hex');
 }
 
+// Copied from the test 'deploying a contract instance' in end-to-end/src/e2e_deploy_contract.test.ts
+export function getSampleContractInstanceDeployedEventPayload(): Buffer {
+  const path = getPathToFixture('ContractInstanceDeployedEventData.hex');
+  return Buffer.from(readFileSync(path).toString(), 'hex');
+}
+
 function getPathToFixture(name: string) {
   return resolve(dirname(fileURLToPath(import.meta.url)), `../../fixtures/${name}`);
 }

yarn-project/end-to-end/src/e2e_deploy_contract.test.ts

@@ -407,6 +407,9 @@ describe('e2e_deploy_contract', () => {
         const publicKeysHash = computePublicKeysHash(publicKey);
 
         instance = getContractInstanceFromDeployParams(artifact, initArgs, salt, publicKey, portalAddress);
+        logger(
+          `Deploying contract instance at ${instance.address.toString()} with class id ${instance.contractClassId.toString()}`,
+        );
         const tx = await deployer.methods
           .deploy(salt, contractClass.id, instance.initializationHash, portalAddress, publicKeysHash, false)
           .send()