code style fix

add command tests

tests/Feature/SSHCommands/CronJob/UpdateCronJobsCommandTest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Tests\Feature\SSHCommands\CronJob;
+
+use App\SSHCommands\CronJob\UpdateCronJobsCommand;
+use Tests\TestCase;
+
+class UpdateCronJobsCommandTest extends TestCase
+{
+    public function test_generate_command()
+    {
+        $command = new UpdateCronJobsCommand('vito', 'ls -la');
+
+        $this->assertStringContainsString("echo 'ls -la' | sudo -u vito crontab -;", $command->content());
+
+        $this->assertStringContainsString('sudo -u vito crontab -l;', $command->content());
+    }
+}