Added unit tests for helpers and tests for commands

tests/Unit/Helpers/SpeedtestHelper/FailureRateTest.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace Tests\Unit\Helpers\SpeedtestHelper;
+
+use App\Helpers\SpeedtestHelper;
+use App\Speedtest;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class FailureRateTest extends TestCase
+{
+    use RefreshDatabase;
+
+    /**
+     * A basic unit test example.
+     *
+     * @return void
+     */
+    public function testFailureRate()
+    {
+        $success = rand(1, 15);
+        $failed = rand(1, 15);
+
+        for($i = 0; $i < $success; $i++) {
+            Speedtest::create([
+                'ping' => 5,
+                'download' => 5,
+                'upload' => 5
+            ]);
+        }
+
+        for($i = 0; $i < $failed; $i++) {
+            Speedtest::create([
+                'ping' => 5,
+                'download' => 5,
+                'upload' => 5,
+                'failed' => true
+            ]);
+        }
+
+        $output = SpeedtestHelper::failureRate(1);
+
+        $this->assertEquals($output[0]['success'], $success);
+        $this->assertEquals($output[0]['failure'], $failed);
+    }
+}