246 lines
7.7 KiB
Rust
246 lines
7.7 KiB
Rust
use super::*;
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// This is an unspecific happy-case test that just runs a few instructions to check
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// that they work in principle. It should be split up / renamed.
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#[tokio::test]
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async fn test_margin_trade() -> Result<(), BanksClientError> {
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let builder = TestContextBuilder::new();
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let context = builder.start_default().await;
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let solana = &context.solana.clone();
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let admin = TestKeypair::new();
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let owner = context.users[0].key;
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let payer = context.users[1].key;
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let mints = &context.mints[0..2];
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let payer_mint0_account = context.users[1].token_accounts[0];
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let loan_origination_fee = 0.0005;
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// higher resolution that the loan_origination_fee for one token
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let balance_f64eq = |a: f64, b: f64| utils::assert_equal_f64_f64(a, b, 0.0001);
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//
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// SETUP: Create a group, account, register a token (mint0)
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//
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let GroupWithTokens { group, tokens, .. } = GroupWithTokensConfig {
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admin,
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payer,
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mints: mints.to_vec(),
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..GroupWithTokensConfig::default()
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}
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.create(solana)
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.await;
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let bank = tokens[0].bank;
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let vault = tokens[0].vault;
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//
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// provide some funds for tokens, so the test user can borrow
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//
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let provided_amount = 1000;
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create_funded_account(
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&solana,
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group,
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owner,
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1,
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&context.users[1],
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mints,
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provided_amount,
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0,
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)
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.await;
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//
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// create thes test user account
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//
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let account = send_tx(
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solana,
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AccountCreateInstruction {
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account_num: 0,
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token_count: 16,
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serum3_count: 8,
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perp_count: 8,
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perp_oo_count: 8,
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group,
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owner,
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payer,
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},
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)
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.await
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.unwrap()
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.account;
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//
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// TEST: Deposit funds
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//
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let deposit_amount_initial = 100;
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{
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let start_balance = solana.token_account_balance(payer_mint0_account).await;
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send_tx(
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solana,
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TokenDepositInstruction {
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amount: deposit_amount_initial,
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reduce_only: false,
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account,
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owner,
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token_account: payer_mint0_account,
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token_authority: payer.clone(),
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bank_index: 0,
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},
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)
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.await
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.unwrap();
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assert_eq!(
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solana.token_account_balance(vault).await,
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provided_amount + deposit_amount_initial
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);
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assert_eq!(
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solana.token_account_balance(payer_mint0_account).await,
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start_balance - deposit_amount_initial
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);
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assert_eq!(
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account_position(solana, account, bank).await,
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deposit_amount_initial as i64,
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);
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}
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//
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// TEST: Margin trade
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//
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let margin_account = payer_mint0_account;
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let margin_account_initial = solana.token_account_balance(margin_account).await;
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let target_token_account = context.users[0].token_accounts[0];
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let withdraw_amount = 2;
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let deposit_amount = 1;
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let send_flash_loan_tx = |solana, withdraw_amount, deposit_amount| async move {
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let mut tx = ClientTransaction::new(solana);
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tx.add_instruction(FlashLoanBeginInstruction {
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account,
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owner,
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group,
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mango_token_bank: bank,
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mango_token_vault: vault,
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target_token_account,
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withdraw_amount,
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})
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.await;
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if withdraw_amount > 0 {
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tx.add_instruction_direct(
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spl_token::instruction::transfer(
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&spl_token::ID,
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&target_token_account,
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&margin_account,
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&owner.pubkey(),
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&[&owner.pubkey()],
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withdraw_amount,
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)
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.unwrap(),
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);
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}
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if deposit_amount > 0 {
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tx.add_instruction_direct(
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spl_token::instruction::transfer(
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&spl_token::ID,
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&margin_account,
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&target_token_account,
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&payer.pubkey(),
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&[&payer.pubkey()],
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deposit_amount,
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)
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.unwrap(),
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);
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tx.add_signer(payer);
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}
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tx.add_instruction(FlashLoanEndInstruction {
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account,
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owner,
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mango_token_bank: bank,
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mango_token_vault: vault,
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target_token_account,
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// the test only accesses a single token: not a swap
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flash_loan_type: mango_v4::instructions::FlashLoanType::Unknown,
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})
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.await;
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tx.send().await.unwrap();
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};
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send_flash_loan_tx(solana, withdraw_amount, deposit_amount).await;
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assert_eq!(
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solana.token_account_balance(vault).await,
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provided_amount + deposit_amount_initial - withdraw_amount + deposit_amount
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);
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assert_eq!(
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solana.token_account_balance(margin_account).await,
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margin_account_initial + withdraw_amount - deposit_amount
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);
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// no fee because user had positive balance
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assert!(balance_f64eq(
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account_position_f64(solana, account, bank).await,
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(deposit_amount_initial - withdraw_amount + deposit_amount) as f64
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));
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//
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// TEST: Bringing the balance to 0 deactivates the token
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//
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let deposit_amount_initial = account_position(solana, account, bank).await;
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let margin_account_initial = solana.token_account_balance(margin_account).await;
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let withdraw_amount = deposit_amount_initial as u64;
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let deposit_amount = 0;
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send_flash_loan_tx(solana, withdraw_amount, deposit_amount).await;
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assert_eq!(solana.token_account_balance(vault).await, provided_amount);
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assert_eq!(
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solana.token_account_balance(margin_account).await,
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margin_account_initial + withdraw_amount
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);
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// Check that position is fully deactivated
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let account_data = get_mango_account(solana, account).await;
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assert_eq!(account_data.active_token_positions().count(), 0);
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//
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// TEST: Activating a token via margin trade
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//
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let margin_account_initial = solana.token_account_balance(margin_account).await;
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let withdraw_amount = 0;
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let deposit_amount = 100;
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send_flash_loan_tx(solana, withdraw_amount, deposit_amount).await;
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assert_eq!(
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solana.token_account_balance(vault).await,
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provided_amount + deposit_amount
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);
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assert_eq!(
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solana.token_account_balance(margin_account).await,
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margin_account_initial - deposit_amount
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);
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assert!(balance_f64eq(
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account_position_f64(solana, account, bank).await,
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deposit_amount as f64
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));
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//
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// TEST: Try loan fees by withdrawing more than the user balance
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//
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let margin_account_initial = solana.token_account_balance(margin_account).await;
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let deposit_amount_initial = account_position(solana, account, bank).await as u64;
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let withdraw_amount = 500;
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let deposit_amount = 450;
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println!("{}", deposit_amount_initial);
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send_flash_loan_tx(solana, withdraw_amount, deposit_amount).await;
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assert_eq!(
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solana.token_account_balance(vault).await,
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provided_amount + deposit_amount_initial + deposit_amount - withdraw_amount
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);
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assert_eq!(
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solana.token_account_balance(margin_account).await,
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margin_account_initial + withdraw_amount - deposit_amount
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);
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assert!(balance_f64eq(
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account_position_f64(solana, account, bank).await,
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(deposit_amount_initial + deposit_amount - withdraw_amount) as f64
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- (withdraw_amount - deposit_amount_initial) as f64 * loan_origination_fee
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));
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Ok(())
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}
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