feat: Added Proposal Canceled Event Handler

[jyotirmoydotdev]

ProposalCanceled Event

In the latest update of Chamber, a new event called ProposalCanceled has been introduced. This event emits a uint256 representing the Proposal ID of the canceled proposal. To facilitate tracking of this event and storing its data in the graph, the handleProposalCanceled function has been added to the chamber.ts file. Additionally, all necessary changes have been implemented to ensure seamless integration.

export function handleProposalCanceled(event: ProposalCanceledEvent): void {
  const id = createId(event.transaction.hash, event.logIndex);
  const proposalCanceledTx = new ProposalCanceled(id);
  proposalCanceledTx.proposalId = event.params.proposalId;
  proposalCanceledTx.contractAddress = changetype<Bytes>(event.transaction.to);

  proposalCanceledTx.blockNumber = event.block.number;
  proposalCanceledTx.blockTimestamp = event.block.timestamp;
  proposalCanceledTx.transactionHash = event.transaction.hash;

  proposalCanceledTx.save();
}

Testing Done

The changes were thoroughly tested to ensure functionality and reliability. Manual testing involved verifying the new handleProposalCanceled function behaviour, including its ability to track ProposalCanceled events and store corresponding data.

describe("Test ProposalCanceled", () => {
  const createMockProposalCanceledEvent = (proposalId: i32 = 1): ProposalCanceled => {
    const event = createProposalCanceledEvent(proposalId);
    return event;
  };
  test("Handel ProposalCanceled Tx", () => {
    const event = createMockProposalCanceledEvent();
    handleProposalCanceled(event);
    expectProposalCanceledAdded(event);
  });
});