Function demand_instruction_error

pub fn demand_instruction_error(
    expected_error: InstructionError,
    result: TransactionResult,
)

Asserts that a transaction fails with a specific instruction error, regardless of index.

This is the “anywhere” version of instruction error testing - it matches the specified instruction error without caring which instruction in the transaction produced it. Perfect for single-instruction transactions or when you just need to verify the error type.

For precise instruction-index control, use demand_instruction_error_at_index.

Arguments

• expected_error - The expected instruction error
• result - The result of executing a transaction via litesvm::LiteSVM::send_transaction

Panics

Panics if:

• The transaction succeeds (no error)
• The error is not an instruction error
• The instruction error doesn’t match the expected error

Example

demand_instruction_error(
    InstructionError::Custom(1),
    result
);