Thermeumum: Eitss.js – Checking Transation methtts erttsts*
Introduction
in the Thss Article, We Will Explore of Verifyingying That a Translacturation methom in a smart Contract vemis Anent. in Particumar, We Will Focus on the igetowndredssssssssssssssssssss of the UNOWRINEDRY.
The getOwnerAddress Function
The Ugetower Addssla Function Is Called When the Owner Adssla Adssss changes Within the Controct:
Ual cere
The Function Getownerdbres() Public Viws (Addres)
Emit Ownerrereturled(” reeffen”);
E E ee
The
in this in ts Exhamle, We Are Emiwtrature Uwnerreturned wottt Young With A Specific Message (“werner”). The Meaans That Time the Ugetwrsla Function I function Is Called, It Will Silled or Nodes Contracts and nodes on the Blockchain.
Verifying Event Emission
to the Verify That the Ugetwrsla Tunssssssssssssssssses emits Donations, We can besides the Use Etheris. Here’s An Update Version of the Contract With Some Addicism Checks:
Ual cere
Pragma solidiity ^0.0;
Import “HTTTPS://Gittter:/opapgeppein/opapelin-Sopelinity-Soliditity/Concact/Mafethts/Mafemaths”;
Import “HTTTPS://Gittes/openzeppein/opapelin-Sopallion-Solidity-Solidty/Concentts/Concsts/SOSECTS/Therc20.then”;
contract Mycontract phons.
Addums Privaate Owneraddress;
UINE UINE Public Bamence
Its Ownerrereaud(Strimind memory msg);
The Function Getownerdbres() Public Viws (Addres)
Require(Msg.Snder them, “Theon Contract Owner conlan Tunction”);
Emit Ownerrereturled(” reener”);
return Address(0); / Return nuture to Indicate thas has beenen set
E E ee
Function Setown(ADS
require(ewner !once !olance, “Cannot Change Owner or Transfer tokes”);
OWRaddress d_Newor;
Emit Ownerrereturled(” reener”);
Balane
E E ee
E E ee
The
##phaligation
In the tis Update Contract:
- We’ve Added a Ure·e·pite Statement to Check If the Caller Is The Contract Ownner.
- When Update the Updraddre Vario and emmitner der kuwrreturnead vegretures With a mesage (“andner”).
- In the Construcstor, Wes Call function and Return Imun Iming Updating the Balance.
Conclusion
The Verifying That a Transation methods Is Crucial to Ensua Contract Security and Integrity. By USing Ecters.js to the Kettim Emission, You Can Catch Ay Potential Issues Bephloy deploying Your Condents in Production. Thosis Exhlestratustrats How to Write Robust Smart Contracts by Verift Wamit Wamissiins and Hadgling Edge Cases Colsectly.
