code style fix

add command tests

tests/Feature/SSHCommands/Installation/InstallRedisCommandTest.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace Tests\Feature\SSHCommands\Installation;
+
+use App\SSHCommands\Installation\InstallRedisCommand;
+use Tests\TestCase;
+
+class InstallRedisCommandTest extends TestCase
+{
+    public function test_generate_command()
+    {
+        $command = new InstallRedisCommand();
+
+        $expected = <<<'EOD'
+        sudo DEBIAN_FRONTEND=noninteractive apt install redis-server -y
+
+        sudo sed -i 's/bind 127.0.0.1 ::1/bind 0.0.0.0/g' /etc/redis/redis.conf
+
+        sudo service redis enable
+
+        sudo service redis start
+        EOD;
+
+        $this->assertStringContainsString($expected, $command->content());
+    }
+}