Added unit tests for helpers and tests for commands

tests/Feature/Commands/GetConfigCommandTest.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Tests\Feature\Commands;
+
+use App\Helpers\SettingsHelper;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Foundation\Testing\WithFaker;
+use Tests\TestCase;
+
+class GetConfigCommandTest extends TestCase
+{
+    use RefreshDatabase;
+
+    /**
+     * A basic feature test example.
+     *
+     * @return void
+     */
+    public function testGetConfig()
+    {
+        $configJson = json_encode(SettingsHelper::getConfig(), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
+
+        $this->artisan('speedtest:config')
+             ->expectsOutput($configJson)
+             ->assertExitCode(0);
+    }
+}