109 lines
3.4 KiB
Rust
109 lines
3.4 KiB
Rust
#![cfg(feature = "test-bpf")]
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mod helpers;
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use helpers::*;
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use solana_program_test::*;
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use solana_sdk::{
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pubkey::Pubkey,
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signature::{Keypair, Signer},
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transaction::Transaction,
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};
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use spl_token_lending::{
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instruction::accrue_reserve_interest,
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math::{Decimal, Rate, TryMul},
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processor::process_instruction,
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state::SLOTS_PER_YEAR,
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};
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const LAMPORTS_TO_SOL: u64 = 1_000_000_000;
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const FRACTIONAL_TO_USDC: u64 = 1_000_000;
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const INITIAL_SOL_RESERVE_SUPPLY_LAMPORTS: u64 = 100 * LAMPORTS_TO_SOL;
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const INITIAL_USDC_RESERVE_SUPPLY_FRACTIONAL: u64 = 100 * FRACTIONAL_TO_USDC;
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#[tokio::test]
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async fn test_success() {
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let mut test = ProgramTest::new(
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"spl_token_lending",
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spl_token_lending::id(),
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processor!(process_instruction),
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);
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// limit to track compute unit increase
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test.set_bpf_compute_max_units(80_000);
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let user_accounts_owner = Keypair::new();
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let usdc_mint = add_usdc_mint(&mut test);
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let lending_market = add_lending_market(&mut test, usdc_mint.pubkey);
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let mut reserve_config = TEST_RESERVE_CONFIG;
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reserve_config.loan_to_value_ratio = 80;
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// Configure reserve to a fixed borrow rate of 1%
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const BORROW_RATE: u8 = 1;
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reserve_config.min_borrow_rate = BORROW_RATE;
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reserve_config.optimal_borrow_rate = BORROW_RATE;
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reserve_config.optimal_utilization_rate = 100;
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let usdc_reserve = add_reserve(
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&mut test,
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&user_accounts_owner,
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&lending_market,
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AddReserveArgs {
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borrow_amount: 100,
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liquidity_amount: INITIAL_USDC_RESERVE_SUPPLY_FRACTIONAL,
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liquidity_mint_decimals: usdc_mint.decimals,
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liquidity_mint_pubkey: usdc_mint.pubkey,
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slots_elapsed: SLOTS_PER_YEAR,
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config: reserve_config,
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..AddReserveArgs::default()
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},
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);
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let sol_reserve = add_reserve(
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&mut test,
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&user_accounts_owner,
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&lending_market,
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AddReserveArgs {
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borrow_amount: 100,
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liquidity_amount: INITIAL_SOL_RESERVE_SUPPLY_LAMPORTS,
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liquidity_mint_decimals: 9,
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liquidity_mint_pubkey: spl_token::native_mint::id(),
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slots_elapsed: SLOTS_PER_YEAR,
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config: reserve_config,
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..AddReserveArgs::default()
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},
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);
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let (mut banks_client, payer, recent_blockhash) = test.start().await;
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let mut transaction = Transaction::new_with_payer(
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&[accrue_reserve_interest(
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spl_token_lending::id(),
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vec![usdc_reserve.pubkey, sol_reserve.pubkey],
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)],
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Some(&payer.pubkey()),
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);
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transaction.sign(&[&payer], recent_blockhash);
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assert!(banks_client.process_transaction(transaction).await.is_ok());
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let sol_reserve = sol_reserve.get_state(&mut banks_client).await;
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let usdc_reserve = usdc_reserve.get_state(&mut banks_client).await;
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let borrow_rate = Rate::from_percent(100u8 + BORROW_RATE);
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assert!(sol_reserve.cumulative_borrow_rate_wads > borrow_rate.into());
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assert_eq!(
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sol_reserve.cumulative_borrow_rate_wads,
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usdc_reserve.cumulative_borrow_rate_wads
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);
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assert!(
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sol_reserve.liquidity.borrowed_amount_wads
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> Decimal::from(100u64).try_mul(borrow_rate).unwrap()
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);
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assert_eq!(
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sol_reserve.liquidity.borrowed_amount_wads,
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usdc_reserve.liquidity.borrowed_amount_wads
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);
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}
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