diff --git a/tests/Unit/HorizonLogs/HorizonNewLogsTest.php b/tests/Unit/HorizonLogs/HorizonNewLogsTest.php
index 40a00291..c8a89089 100644
--- a/tests/Unit/HorizonLogs/HorizonNewLogsTest.php
+++ b/tests/Unit/HorizonLogs/HorizonNewLogsTest.php
@@ -69,3 +69,87 @@
         ->and($logs[3]->message)->toBe('App\Jobs\TestJob')
         ->and($logs[3]->context['duration'])->toBe('25.14ms');
 });
+
+it('detects Horizon logs without preamble', function () {
+    $file = generateLogFile('horizon_no_preamble.log', content: <<<EOF
+  2023-07-22 16:13:33 App\Jobs\ProcessOrder ............................... RUNNING
+  2023-07-22 16:13:34 App\Jobs\ProcessOrder ............................... 1.2s DONE
+  2023-07-22 16:13:35 App\Jobs\SendInvoice ................................ RUNNING
+  2023-07-22 16:13:36 App\Jobs\SendInvoice ................................ 850ms DONE
+EOF);
+    $file = new LogFile($file->path);
+
+    expect($file->type()->value)->toBe(LogType::HORIZON);
+
+    $logReader = $file->logs()->scan();
+
+    expect($logs = $logReader->get())->toHaveCount(4)
+        ->and($logs[0]->datetime->toDateTimeString())->toBe('2023-07-22 16:13:33')
+        ->and($logs[0]->level)->toBe('RUNNING')
+        ->and($logs[0]->message)->toBe('App\Jobs\ProcessOrder')
+        ->and($logs[1]->datetime->toDateTimeString())->toBe('2023-07-22 16:13:34')
+        ->and($logs[1]->level)->toBe('DONE')
+        ->and($logs[1]->context['duration'])->toBe('1.2s')
+        ->and($logs[2]->level)->toBe('RUNNING')
+        ->and($logs[3]->level)->toBe('DONE')
+        ->and($logs[3]->context['duration'])->toBe('850ms');
+});
+
+it('handles various duration formats', function () {
+    $file = generateLogFile('horizon_durations.log', content: <<<EOF
+  2022-11-11 13:50:44 App\Jobs\FirstJob ............... 40.12ms DONE
+  2022-11-11 13:50:44 App\Jobs\SecondJob .............. 35.42ms DONE
+  2022-11-11 13:50:44 App\Jobs\ThirdJob ............... 71.48ms DONE
+  2022-11-11 13:50:44 App\Jobs\FourthJob .............. 55.35ms DONE
+  2022-11-11 13:50:45 App\Jobs\FifthJob ............... 3.67ms FAIL
+  2022-11-11 13:50:46 App\Jobs\SixthJob ............... 2m 30s DONE
+EOF);
+    $file = new LogFile($file->path);
+
+    expect($file->type()->value)->toBe(LogType::HORIZON);
+
+    $logReader = $file->logs()->scan();
+
+    expect($logs = $logReader->get())->toHaveCount(6)
+        ->and($logs[0]->context['duration'])->toBe('40.12ms')
+        ->and($logs[0]->level)->toBe('DONE')
+        ->and($logs[1]->context['duration'])->toBe('35.42ms')
+        ->and($logs[1]->level)->toBe('DONE')
+        ->and($logs[2]->context['duration'])->toBe('71.48ms')
+        ->and($logs[2]->level)->toBe('DONE')
+        ->and($logs[3]->context['duration'])->toBe('55.35ms')
+        ->and($logs[3]->level)->toBe('DONE')
+        ->and($logs[4]->context['duration'])->toBe('3.67ms')
+        ->and($logs[4]->level)->toBe('FAIL')
+        ->and($logs[5]->context['duration'])->toBe('2m 30s')
+        ->and($logs[5]->level)->toBe('DONE');
+});
+
+it('handles concurrent job output with garbled lines', function () {
+    $file = generateLogFile('horizon_concurrent.log', content: <<<EOF
+  2022-11-11 13:50:44 App\Jobs\SlowJob ................ RUNNING
+  2022-11-11 13:50:44 App\Jobs\QuickJob ............... 40.12ms DONE
+  2022-11-11 13:50:44 App\Jobs\AnotherJob ............. 35.42ms DONE
+  2022-11-11 13:50:44 App\Jobs\SlowJob 2022-11-11 13:50:44 App\Notifications\SomeNotification
+  2022-11-11 13:50:44 App\Notifications\SomeNotification ..................... 71.48ms DONE
+  2022-11-11 13:50:44 App\Jobs\SlowJob ..................... 55.35ms DONE
+EOF);
+    $file = new LogFile($file->path);
+
+    expect($file->type()->value)->toBe(LogType::HORIZON);
+
+    $logReader = $file->logs()->scan();
+
+    $logs = $logReader->get();
+
+    // File should be detected as Horizon type
+    expect($file->type()->value)->toBe(LogType::HORIZON);
+
+    // Valid lines should be parsed correctly (garbled line might be skipped or partially parsed)
+    expect($logs)->toBeArray()
+        ->and(count($logs))->toBeGreaterThanOrEqual(4);
+
+    // Check that at least some valid logs were parsed
+    $validLogs = array_filter($logs, fn ($log) => $log->datetime !== null);
+    expect(count($validLogs))->toBeGreaterThanOrEqual(4);
+});
diff --git a/tests/Unit/HorizonLogs/HorizonOldLogsTest.php b/tests/Unit/HorizonLogs/HorizonOldLogsTest.php
index 3b351217..25beef8c 100644
--- a/tests/Unit/HorizonLogs/HorizonOldLogsTest.php
+++ b/tests/Unit/HorizonLogs/HorizonOldLogsTest.php
@@ -24,3 +24,33 @@
         ->and($logs[1]->message)->toBe('App\Notifications\BookingUpdated')
         ->and($logs[1]->context['uuid'])->toBe('13acffa6-fd25-4d36-876a-b48e968302a4');
 });
+
+it('can process old Horizon logs with failed status', function () {
+    $file = generateLogFile('horizon_old_failed.log', content: <<<EOF
+[2022-10-07 09:41:00][a1b2c3d4-e5f6-7890-1234-567890abcdef] Processing: App\Jobs\SendEmailJob
+[2022-10-07 09:41:01][a1b2c3d4-e5f6-7890-1234-567890abcdef] Failed:     App\Jobs\SendEmailJob
+[2022-10-07 09:42:00][b2c3d4e5-f6a7-8901-2345-67890abcdef1] Processing: App\Events\UserRegistered
+[2022-10-07 09:42:00][b2c3d4e5-f6a7-8901-2345-67890abcdef1] Processed:  App\Events\UserRegistered
+EOF);
+    $file = new LogFile($file->path);
+
+    expect($file->type()->value)->toBe(LogType::HORIZON_OLD); // HorizonOldLog
+
+    $logReader = $file->logs()->scan();
+
+    expect($logs = $logReader->get())->toHaveCount(4)
+        ->and($logs[0]->datetime->toDateTimeString())->toBe('2022-10-07 09:41:00')
+        ->and($logs[0]->level)->toBe('Processing')
+        ->and($logs[0]->message)->toBe('App\Jobs\SendEmailJob')
+        ->and($logs[0]->context['uuid'])->toBe('a1b2c3d4-e5f6-7890-1234-567890abcdef')
+        ->and($logs[1]->datetime->toDateTimeString())->toBe('2022-10-07 09:41:01')
+        ->and($logs[1]->level)->toBe('Failed')
+        ->and($logs[1]->message)->toBe('App\Jobs\SendEmailJob')
+        ->and($logs[1]->context['uuid'])->toBe('a1b2c3d4-e5f6-7890-1234-567890abcdef')
+        ->and($logs[2]->datetime->toDateTimeString())->toBe('2022-10-07 09:42:00')
+        ->and($logs[2]->level)->toBe('Processing')
+        ->and($logs[2]->message)->toBe('App\Events\UserRegistered')
+        ->and($logs[3]->datetime->toDateTimeString())->toBe('2022-10-07 09:42:00')
+        ->and($logs[3]->level)->toBe('Processed')
+        ->and($logs[3]->message)->toBe('App\Events\UserRegistered');
+});