PDA Creation
How to create and interact with Program Derived Addresses
Complete Test
use litesvm::LiteSVM;
use solana_sdk::{
account::Account,
pubkey::Pubkey,
};
#[test]
fn test_pda_creation() {
let mut svm = LiteSVM::new();
// Program that owns the PDA
let program_id = Pubkey::new_unique();
// Derive PDA address
let seed = b"my_pda";
let (pda, bump) = Pubkey::find_program_address(
&[seed],
&program_id
);
println!("PDA: {}", pda);
println!("Bump: {}", bump);
// Create PDA account manually (for testing)
svm.set_account(pda, Account {
lamports: 1_000_000,
data: vec![bump], // Store bump seed in data
owner: program_id,
executable: false,
rent_epoch: 0,
}).unwrap();
// Verify PDA was created
let account = svm.get_account(&pda).unwrap();
assert_eq!(account.owner, program_id);
assert_eq!(account.data[0], bump);
println!("PDA created successfully!");
}
Key Points
- PDA Derivation: Use
Pubkey::find_program_address()
to derive PDA addresses - Seeds: PDAs are derived from seeds and the program ID
- Bump Seed: The bump seed ensures the address is off the ed25519 curve
- Account Creation: Use
set_account()
to manually create accounts for testing - Ownership: PDAs must be owned by the program that derived them