[9.x] Improve ScheduleListCommand (#41552)

* Add an extra test.

* Promote early return if the schedule is empty.

* Call getTerminalWidth statically.

* Call str_replace only once.

* No need to create a new DateTimeZone for each item in the map.

* Use line() method.

* Clean up formatCronExpression method.

* Fix CS.

* formatting

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Illuminate/Console/Scheduling/ScheduleListCommand.php

@@ -45,21 +45,30 @@ class ScheduleListCommand extends Command
     public function handle(Schedule $schedule)
     {
         $events = collect($schedule->events());
-        $terminalWidth = $this->getTerminalWidth();
+
+        if ($events->isEmpty()) {
+            $this->comment('No scheduled tasks have been defined.');
+
+            return;
+        }
+
+        $terminalWidth = self::getTerminalWidth();
+
         $expressionSpacing = $this->getCronExpressionSpacing($events);
 
-        $events = $events->map(function ($event) use ($terminalWidth, $expressionSpacing) {
+        $timezone = new DateTimeZone($this->option('timezone') ?? config('app.timezone'));
+
+        $events = $events->map(function ($event) use ($terminalWidth, $expressionSpacing, $timezone) {
             $expression = $this->formatCronExpression($event->expression, $expressionSpacing);
 
             $command = $event->command;
             $description = $event->description;
 
             if (! $this->output->isVerbose()) {
-                $command = str_replace(
-                    Application::artisanBinary(),
+                $command = str_replace([Application::phpBinary(), Application::artisanBinary()], [
+                    'php',
                     preg_replace("#['\"]#", '', Application::artisanBinary()),
-                    str_replace(Application::phpBinary(), 'php', $event->command)
-                );
+                ], $event->command);
             }
 
             if ($event instanceof CallbackEvent) {
@@ -77,7 +86,7 @@ public function handle(Schedule $schedule)
 
             $nextDueDate = Carbon::create((new CronExpression($event->expression))
                 ->getNextRunDate(Carbon::now()->setTimezone($event->timezone))
-                ->setTimezone(new DateTimeZone($this->option('timezone') ?? config('app.timezone')))
+                ->setTimezone($timezone)
             );
 
             $nextDueDate = $this->output->isVerbose()
@@ -109,11 +118,7 @@ public function handle(Schedule $schedule)
             ) : ''];
         });
 
-        if ($events->isEmpty()) {
-            return $this->comment('No scheduled tasks have been defined.');
-        }
-
-        $this->output->writeln(
+        $this->line(
             $events->flatten()->filter()->prepend('')->push('')->toArray()
         );
     }
@@ -140,10 +145,10 @@ private function getCronExpressionSpacing($events)
      */
     private function formatCronExpression($expression, $spacing)
     {
-        $expression = explode(' ', $expression);
+        $expressions = explode(' ', $expression);
 
         return collect($spacing)
-            ->map(fn ($length, $index) => $expression[$index] = str_pad($expression[$index], $length))
+            ->map(fn ($length, $index) => str_pad($expressions[$index], $length))
             ->implode(' ');
     }
 

tests/Integration/Console/Scheduling/ScheduleListCommandTest.php

@@ -21,6 +21,13 @@ protected function setUp(): void
         $this->schedule = $this->app->make(Schedule::class);
     }
 
+    public function testDisplayEmptySchedule()
+    {
+        $this->artisan(ScheduleListCommand::class)
+            ->assertSuccessful()
+            ->expectsOutput('No scheduled tasks have been defined.');
+    }
+
     public function testDisplaySchedule()
     {
         $this->schedule->command(FooCommand::class)->quarterly();