program-test: Add test for moving lamports (#30637)
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use {
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solana_program_test::{processor, ProgramTest},
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solana_sdk::{
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account_info::{next_account_info, AccountInfo},
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entrypoint::ProgramResult,
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instruction::{AccountMeta, Instruction},
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msg,
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pubkey::Pubkey,
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signature::{Keypair, Signer},
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system_instruction,
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transaction::Transaction,
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},
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};
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fn move_lamports_process_instruction(
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_program_id: &Pubkey,
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accounts: &[AccountInfo],
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_input: &[u8],
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) -> ProgramResult {
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msg!("Processing lamports instruction");
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let account_info_iter = &mut accounts.iter();
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let source_info = next_account_info(account_info_iter)?;
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let _other_info = next_account_info(account_info_iter)?;
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let destination_info = next_account_info(account_info_iter)?;
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let destination_lamports = destination_info.lamports();
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**destination_info.lamports.borrow_mut() = destination_lamports
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.checked_add(source_info.lamports())
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.unwrap();
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**source_info.lamports.borrow_mut() = 0;
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Ok(())
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}
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#[tokio::test]
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async fn move_lamports() {
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let move_lamports_program_id = Pubkey::new_unique();
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let program_test = ProgramTest::new(
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"move_lamports",
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move_lamports_program_id,
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processor!(move_lamports_process_instruction),
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);
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let lamports = 1_000_000_000;
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let source = Keypair::new();
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let mut context = program_test.start_with_context().await;
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let instructions = vec![
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system_instruction::create_account(
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&context.payer.pubkey(),
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&source.pubkey(),
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lamports,
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0,
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&move_lamports_program_id,
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),
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Instruction {
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program_id: move_lamports_program_id,
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accounts: vec![
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AccountMeta::new(source.pubkey(), false),
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AccountMeta::new(context.payer.pubkey(), false),
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AccountMeta::new(context.payer.pubkey(), false),
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],
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data: vec![],
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},
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];
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let transaction = Transaction::new_signed_with_payer(
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&instructions,
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Some(&context.payer.pubkey()),
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&[&context.payer, &source],
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context.last_blockhash,
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);
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context
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.banks_client
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.process_transaction(transaction)
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.await
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.unwrap();
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assert_eq!(
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context
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.banks_client
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.get_balance(source.pubkey())
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.await
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.unwrap(),
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0
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);
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}
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