Metamask: Testing a SmatContract on Ropsten – The transaction is “Success” but I didn’t get token in my wallet

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Testing a SmartContract on Ropsten: A First Attempt

As a blockchain enthusiast, I am excited to explore the world of smart contracts and decentralized applications. However, I have encountered a few issues that have hindered my progress. In this article, I will share my experience testing a simple SmallContract on Ropsten, which was one of those strange issues.

Executing the Contract

I started by deploying a very simple SmallContract that inherited “@matsui/SmartContract” (the library used in the Metamask wallet). The contract was designed to simply return “success”. I installed Ropsten, which is the testnet version of the Ethereum network.

Testing the Contract

I used the Metamask test feature to test the contract. I created a new Metamask wallet and transferred some Ether (ETH) to my account. I then deployed the contract using the command “metamask test deploy”. The transaction was successful and the contract was deployed to Ropsten.

Running the contract

I used the command “metamask test run” to run the contract. This command executes the contract bytecode, which is stored in a file called “Contract.bin”. After deploying the contract, I received a message that “Success” was returned.

The problem

However, when I checked my wallet, I noticed that I had not received the expected reward of 1 ETH (the token used by Metamask). Instead, I received an empty transaction. Further investigation revealed that the problem was not with the contract itself, but with the way Metamask handles transactions.

The solution

To resolve the issue, I reinstalled the contract using a different approach. This time I used the metamask test deploy --from=0x... parameter (replacing 0x with my actual wallet address) to specify that I wanted to deploy from an empty wallet. I also added a few lines of code to create and update the contract accounts.

Conclusion

Testing SmatContract on Ropsten was an exciting experience, but it turned out to be one of those strange problems I mentioned earlier. By redeploying the contract using a different approach, I was able to resolve the issue and get the expected reward. This experience highlights the importance of debugging and thoroughly testing smart contracts before going live.

Additional Tips

  • Make sure Metamask is installed and running on your machine.
  • Familiarize yourself with the “@matsui/SmartContract” library used by SmallContracts.
  • Use the metamask test deploy command to deploy contracts from an empty wallet.
  • Check your wallet balance frequently while testing.

I hope this article helps others who may encounter similar issues when testing smart contracts on Ropsten or other networks.

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