code style fix

add command tests

tests/Feature/SSHCommands/Installation/InstallNodejsCommandTest.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Tests\Feature\SSHCommands\Installation;
+
+use App\SSHCommands\Installation\InstallNodejsCommand;
+use Tests\TestCase;
+
+class InstallNodejsCommandTest extends TestCase
+{
+    public function test_generate_command()
+    {
+        $command = new InstallNodejsCommand();
+
+        $expected = <<<'EOD'
+        curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash -;
+
+        sudo DEBIAN_FRONTEND=noninteractive apt update
+
+        sudo DEBIAN_FRONTEND=noninteractive apt install nodejs -y
+        EOD;
+
+        $this->assertStringContainsString($expected, $command->content());
+    }
+}