Use os_pipe

src/app_state.rs

@@ -11,7 +11,12 @@ use std::{
     process::{Command, Stdio},
 };
 
-use crate::{embedded::EMBEDDED_FILES, exercise::Exercise, info_file::ExerciseInfo, DEBUG_PROFILE};
+use crate::{
+    embedded::EMBEDDED_FILES,
+    exercise::{Exercise, OUTPUT_CAPACITY},
+    info_file::ExerciseInfo,
+    DEBUG_PROFILE,
+};
 
 const STATE_FILE_NAME: &str = ".rustlings-state.txt";
 const BAD_INDEX_ERR: &str = "The current exercise index is higher than the number of exercises";
@@ -302,11 +307,13 @@ impl AppState {
         let Some(ind) = self.next_pending_exercise_ind() else {
             writer.write_all(RERUNNING_ALL_EXERCISES_MSG)?;
 
+            let mut output = Vec::with_capacity(OUTPUT_CAPACITY);
             for (exercise_ind, exercise) in self.exercises().iter().enumerate() {
                 writer.write_fmt(format_args!("Running {exercise} ... "))?;
                 writer.flush()?;
 
-                if !exercise.run()?.status.success() {
+                let success = exercise.run(&mut output)?;
+                if !success {
                     writer.write_fmt(format_args!("{}\n\n", "FAILED".red()))?;
 
                     self.current_exercise_ind = exercise_ind;
@@ -322,6 +329,8 @@ impl AppState {
                 }
 
                 writer.write_fmt(format_args!("{}\n", "ok".green()))?;
+
+                output.clear();
             }
 
             writer.execute(Clear(ClearType::All))?;