Solana: Anchor test error “InstructionDidNotDeserialize”

Error Message Analysis for Solana Anchor Test

The infamous “InstructionDidNotDeserialize” error! This is a common issue that developers encounter building on the Solana blockchain. In this article, we will delve into the details of the instruction and provide guidance on how to resolve it.

What is an instruction?

In Solana, instructions are the basic building blocks for creating smart contracts that can interact with the blockchain in a variety of ways. The “remove_mint_authority” instruction is used to remove an authority from the mint (a contract that governs the delivery of a given asset on the blockchain).

The Problem: The instruction is not serializing

When attempting to run the “remove_mint_authority” instruction, the Solana test suite throws the “Instruction DoesNotDeserialize” error. This error occurs when the data in the instruction is not properly deserialized from memory.

Here are some steps that can lead to this error:

• Incorrect statement parameters: Double check that you are passing the correct parameters to the “remove_mint_authority” statement, including “mint_id”, “authority_id” and any other required fields.

• Insufficient data storage: Make sure that the statement data is stored in a compatible format on the Solana node. If the data is not properly serialized or deserialized, it can lead to this error.

• Incorrect use of anchors: If you are using anchors (a mechanism for creating and managing statements), make sure that they are used correctly and that their execution is accurate.

Troubleshooting

To resolve the “InstructionDoesNotDeserialize” error, follow these steps:

• Check instruction parameters

  

  : Double-check the parameters passed to the remove_mint_authority instruction and make sure they are correct.

• Check data storage

  : Verify that the instruction data is stored in a compatible format. You can use tools like solscan or the Solana Web3 SDK to inspect and debug your code.

• Check anchor implementation: If you are using anchors, make sure that their implementation is correct and handles instruction serialization properly.

Sample code

Here is an example of an implementation of the remove_mint_authority instruction:

using anchor : : Instruction ;
anchor::instruction::{Instruction as AnchoredInstruction, InstructionType};
const REMOVE_MINT_AUTHORITY: AnchoredInstruction = AnchoredInstruction {
// ...
};

In this example, we will define a custom instruction “remove_mint_authority” that can be used to remove an authority from Mint.

Conclusion

The “InstructionDoesNotDeserialize” error can occur if the instruction data is not deserialized properly. You can resolve this issue on Solana by checking the instruction parameters and verifying the data storage. Additionally, implementing the anchor correctly can prevent similar errors in the future.