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Printers#

Methods for printing formatted account data, transaction results, and program details during fuzzing. All output is routed through a safe channel to avoid mixing with the progress bar.

tlog!#

Ad-hoc debug printing macro. Works like println! but safe to use during parallel fuzzing.

tlog!("balance: {}", balance);
tlog!("account: {:#?}", account_data);
tlog!("before: {}, after: {}", before.amount, after.amount);

Note

Prefer tlog! over println! or eprintln! in your fuzz tests. Direct prints will mix with the progress bar in parallel mode.

Prints a formatted transaction result including status, compute units, timestamp, and logs.

pub fn print_transaction_result(&self, result: &TridentTransactionResult)

Parameters:

  • result - The transaction result returned by process_transaction

Example:

let result = self.trident.process_transaction(&[ix], Some("transfer"));
self.trident.print_transaction_result(&result);

Output:

── Transaction Result ─────────────────────────────
  Status:    OK
  CU used:   12345
  Timestamp: 1234567890
  Logs:
    Program 11111... invoke [1]
    Program 11111... success

Fetches, deserializes, and pretty-prints a data account. The type must implement BorshDeserialize, AccountDiscriminator, and Debug.

pub fn print_account<T: BorshDeserialize + AccountDiscriminator + fmt::Debug>(
    &mut self,
    key: &Pubkey,
    discriminator_size_override: Option<usize>,
)

Parameters:

  • key - The public key of the account
  • discriminator_size_override - Optional override for discriminator size to skip. If None, uses the length from the type's AccountDiscriminator implementation.

Example:

// Use discriminator from AccountDiscriminator trait
self.trident.print_account::<MyAccountType>(&account_key, None);

// Override discriminator size (e.g. for non-Anchor accounts)
self.trident.print_account::<MyAccountType>(&account_key, Some(0));

Output:

── Account (7xKX..m3Qp) ──────────────────────────
  MyAccountType {
      balance: 1000000,
      owner: 7xKX...m3Qp,
      is_initialized: true,
  }

Prints raw account metadata without deserialization. Works for any account — wallets, PDAs, unknown layouts, or accounts with no data.

pub fn print_raw_account(&self, key: &Pubkey)

Parameters:

  • key - The public key of the account

Example:

self.trident.print_raw_account(&some_pubkey);

Output:

── Account (7xKX..m3Qp) ──────────────────────────
  Owner:      11111111111111111111111111111111
  Lamports:   1000000000 (1.0000 SOL)
  Data:       0 bytes
  Executable: false

Prints program account details. Automatically detects the loader type and prints relevant metadata. For upgradeable programs (v3), both the program account and its ProgramData account are printed. The ELF binary is never shown.

pub fn print_program(&mut self, key: &Pubkey)

Parameters:

  • key - The public key of the program

Supported loaders:

Loader Details shown
BPF Loader v3 (upgradeable) Program + ProgramData (authority, slot, ELF size)
Loader v4 Status (Deployed/Retracted/Finalized), authority, slot, ELF size
BPF Loader v2 (non-upgradeable) Basic metadata
Native Loader Identifies built-in programs

Example:

self.trident.print_program(&program_id);

Output (v3 upgradeable):

── Program (6Kd1..Aq3V) ──────────────────────────
  Owner:      BPFLoaderUpgradeab1e111111111111111111111111
  Executable: true
  Lamports:   1141440
  Data:       36 bytes
  Loader:     BPF Loader v3 (upgradeable)
  ProgramData: 3Hq8kR...Xm2P

  ── ProgramData (3Hq8..Xm2P) ──
  Slot:       285102847
  Authority:  jvzRJsqnPtEfiSkotmGsoFt7kKzVqtyJaqYiWduZoht
  ELF:        245760 bytes (not shown)
  Lamports:   1830480

Output (v4):

── Program (9xQe..Bm7P) ──────────────────────────
  Owner:      LoaderV411111111111111111111111111111111111
  Executable: true
  Lamports:   2500000
  Data:       131120 bytes
  Loader:     Loader v4
  Slot:       300000000
  Status:     Deployed
  Authority:  jvzRJsqnPtEfiSkotmGsoFt7kKzVqtyJaqYiWduZoht
  ELF:        131072 bytes (not shown)

Requires token feature

Prints a token account showing mint, owner, amount, delegate, state, and any Token-2022 extensions.

pub fn print_token_account(&mut self, account: Pubkey)

Parameters:

  • account - The public key of the token account

Example:

self.trident.print_token_account(token_account_pubkey);

Output:

── Token Account (9xQe..Bm7P) ────────────────────
  Mint:      EPjFW...4Cph
  Owner:     7xKX...m3Qp
  Amount:    1000000
  Delegate:  None
  State:     Initialized
  Extensions (2)
    ImmutableOwner
    TransferFeeAmount: withheld = 0

Requires token feature

Prints a mint account showing authority, supply, decimals, freeze authority, and any Token-2022 extensions with human-readable values.

pub fn print_mint_account(&mut self, account: Pubkey)

Parameters:

  • account - The public key of the mint account

Example:

self.trident.print_mint_account(mint_pubkey);

Output:

── Mint (EPjF..4Cph) ─────────────────────────────
  Authority: jvzRJsqnPtEfiSkotmGsoFt7kKzVqtyJaqYiWduZoht
  Supply:    1000000000
  Decimals:  6
  Freeze:    None
  Extensions (3)
    TransferFeeConfig: 1% (100 bps), max_fee = 1000000
    MetadataPointer: E9pCkonLma6xWWwXLvNUnS48W6ncFBX8VEnj4Eru3rjC
    TokenMetadata: name = "My Token", symbol = "MTK", uri = "https://..."