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Ethereum: Unknown selection error (0x98296c54) in Bigttokentest.t.sol

An unexpected mistake was occurred in the most recent iteration of the popular Smart Contract testing framework, “test bobbalance”. The specific problem includes a “unknown selector” error, which is triggered when executing a test with the “Bigttocentest” contract.

The problem: unknown selection error (0x98296c54)

This unknown selection error occurs when attempts are made to access the “VMCalls” function in the test bobbalance test. The error message “Unknown Selector 0x98296c54 for VMCalls” shows that there is a problem with the inclusion of the contract functions.

The source code: bigttokentest.t.sol

When examining the code, it seems that the “test bobbeto” function within the “BigTocent” stract contains a logical error. In particular, the test tries to call up the “VMCalls” function with an argument that is not defined in the current area.

The problematic code line

`Solidity

Function test bobbalance () public {

// … (other code)

VMCalls (VB, 0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000.

}

`

In this code line, vmcalls ‘is called up with an argument of’ 0x0000000000000000000000000000000000000000. However, the “VMCalls” function of the contract expects a specific argument that is probably a value that is stored in the current area. In this case, it seems that the “VMCalls” function has not made a defined argument available.

The solution

In order to solve this problem, the author of the test seems to have overlooked an important detail: The “VMCalls” function of the contract requires that specific arguments are handed over during function calls. To fix this error, the right argument should be provided, which is probably a value stored in the current area.

Here is an updated version of the code snippet with the corrected line:

`Solidity

Function test bobbalance () public {

// … (other code)

VMCalls (VB, 0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000));

}

`

By adding the second argument `0x000000000000000000000000000000000000000000

Diploma

The “unknown selectoral error (0x98296c54) for VMCalls” in the “test bobbalance” test “was remedied by correcting a logical error in the code of the contract. By understanding the problem and the implementation of the necessary correction, developers can ensure that their intelligent contracts are smooth and consistent.

Note:

The article above is based on hypothetical information and may not reflect any real scenarios or actual Ethereum development practices. It is important to check errors or problems with a work test before making changes to the production code.