fix notification chanels and more tests (#108)

* fix notification chanels and more tests

* fix code style

tests/Unit/SSHCommands/Installation/InstallRequirementsCommandTest.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Tests\Unit\SSHCommands\Installation;
+
+use App\SSHCommands\Installation\InstallRequirementsCommand;
+use Tests\TestCase;
+
+class InstallRequirementsCommandTest extends TestCase
+{
+    public function test_generate_command()
+    {
+        $command = new InstallRequirementsCommand('user@example.com', 'user');
+
+        $expected = <<<'EOD'
+        sudo DEBIAN_FRONTEND=noninteractive apt install -y software-properties-common curl zip unzip git gcc
+        git config --global user.email "user@example.com"
+        git config --global user.name "user"
+        EOD;
+
+        $this->assertStringContainsString($expected, $command->content());
+    }
+}