Metamask: Testing SmatContract on Ropsten – transaction is “successful”, but I didn’t receive the token in my wallet

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Ropsten SmatContract Test: First Try

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

Deploying the Contract

I started by implementing a very basic SmallContract that inherits from @matsui/SmartContract (the library used in the Metamask wallet). The contract was simply meant to bring back “success”. I deployed it to Ropsten, which is a test version of the Ethereum network.

Testing the Contract

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

Executing the Contract

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

The Problem

However, when I checked my wallet, I noticed that I did not receive 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 how Metamask processes transactions.

The Solution

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

Conclusion

Testing Ropsten’s SmatContract was an exciting experience, but it turned out to be one of those weird issues I mentioned earlier. By redeploying the contract using a different approach, I was able to fix the issue and receive the expected reward. This experience underscores the importance of thoroughly debugging and testing smart contracts before deploying them to production.

Additional Tips

• Make sure Metamask is installed and running on your machine.

• Check out 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 while testing smart contracts on Ropsten or other networks.

ETHEREUM TXID INSIGHT