🚑️ Add printers

CHANGELOG.md

@@ -12,6 +12,7 @@ incremented upon a breaking change and the patch version will be incremented for
 
 **Added**
 
+- add printers for printing account data, transaction results, and program details ([464](https://github.com/Ackee-Blockchain/trident/pull/464))
 - add invariant macros for better invariant checking and error handling ([461](https://github.com/Ackee-Blockchain/trident/pull/461))
 - introduce simple Fork Testing allowing forking and caching programs and accounts from desired clusters ([434](https://github.com/Ackee-Blockchain/trident/pull/434))
 - add new random generation methods ([444](https://github.com/Ackee-Blockchain/trident/pull/444))

crates/fuzz/src/invariant.rs

@@ -262,3 +262,24 @@ macro_rules! invariant_lte {
         }
     };
 }
+
+/// Progress-bar-safe print macro. Use this instead of `println!` or `eprintln!`
+/// inside fuzz flows to avoid garbled output in parallel mode.
+///
+/// In parallel mode, the output is routed through the progress bar channel
+/// so it never mixes with the progress bar or with prints from other threads.
+/// In single-thread mode, it falls back to `eprintln!`.
+///
+/// # Examples
+///
+/// ```ignore
+/// tprintln!("balance: {}", balance);
+/// tprintln!("account: {:#?}", account_data);
+/// tprintln!("before: {}, after: {}", before.amount, after.amount);
+/// ```
+#[macro_export]
+macro_rules! tlog {
+    ($($arg:tt)*) => {
+        $crate::trident::progress::send_user_log(format!($($arg)*))
+    };
+}

crates/fuzz/src/trident/flow_executor.rs

@@ -640,6 +640,8 @@ fn run_thread_workload_impl<E: FlowExecutor>(
         .trident_mut()
         .set_master_seed_and_thread_id(master_seed, thread_id);
 
+    progress::set_user_log_sender(event_tx.clone());
+
     // Track progress updates to avoid excessive bar updates
     let mut last_update = Instant::now();
     let mut local_counter = 0u64;

crates/fuzz/src/trident/mod.rs

@@ -14,7 +14,8 @@ pub mod flow_executor;
 mod system;
 
 mod metrics;
-mod progress;
+mod print;
+pub mod progress;
 mod random;
 mod seed;
 #[cfg(feature = "stake")]