Modify Model set functions to abstract, create Access interactions, do test.

_tests/unit/AccessTest.php

@@ -0,0 +1,36 @@
+<?php
+namespace App\Models;
+
+class AccessTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     *
+     * @test
+     */
+    public function databaseInteractionsSuccess()
+    {
+        $access = new Access();
+
+        $this->assertTrue($access->showAll());
+
+        $args = [
+            'username' => 'gregorio',
+            'password' => 'iniada13charc',
+        ];
+
+        $this->assertTrue($access->entry($args));
+
+        $args = [
+            'username' => 'masihgregorio',
+            'password' => 'inijuga3belas'
+        ];
+
+        $this->assertTrue($access->update($args, 1));
+
+        $this->assertTrue($access->showSingle(1));
+
+        $this->assertTrue($access->delete(1));
+
+        $this->assertTrue($access->dropTable('user'));
+    }
+}