ShortCodeTest.php

<?php
namespace Something\Tests\Integration;

use PHPUnit\Framework\TestCase;
use Something\Shortcode;
/**
 * These tests make sure that nothing is super wrong with our code.
 */
class ShortCodeTest extends \WP_UnitTestCase {


    /**
     * Make sure the the short code callback outputs HTML when user is logged in.
     *
     * If this makes no errors, that's good, but still needs manual QA
     * If it fails, something is wrong.
     */
	public function testShortcodeWorksWithUserLoggedIn()
    {
        //Create a user
        $user = get_user_by('ID',self::factory()->user->create());
        //Test shortcode class with logged in user
        $obj = new Shortcode($user);
        $this->assertNotEmpty( $obj->callback() );
    }

    /**
     * Make sure the the short code callback outputs HTML when user is NOT logged in
     *
     * If this makes no errors, that's good, but still needs manual QA
     * If it fails, something is wrong.
     */
	public function testShortcodeWorksWithUserNotLoggedIn()
    {
        //Fake logged out state
        $user = new \WP_User();
        $user->ID = 0;
        //Create shortcode class, and test output
        $obj = new Shortcode($user);
        $this->assertNotEmpty( $obj->callback() );
    }
}